NullPointerException on creation of JSONArray


How to strip HTML tags from string in JavaScript?


Aggregate / summarize multiple variables per group (e.g. sum, mean)


How to validate a Email Using JavaScript?

How to validate an email address in JavaScript


Try to install ubuntu 18.04 to HP Laptop 1-da0xxx


Comments turned off, but 'Leave a reply' link still there

"Leave a comment" link even when you can't


Is $\mathbb{Z}[\sqrt{-7}]$ a UFD or not?

Why is $\mathbb{Z}[\sqrt{-n}], n\ge 3$ not a UFD?


Series of books, featuring a maze, nexus, and tattoos of power

Fantasy book series with non-human races and labyrinth


Sticky top-bar across all Stack Exchange sites

Should the top navigation be frozen (optional)?


Reviewing suggested edits which add one or two not so important tags

Suggested edit system is causing grief, needs to be rethought


Placement of labels on bent arrows in tikz-cd

How to align text in TikZ nodes by baseline?


What is the cleverest way to calculate $[\hat{a}^{M},\hat{a}^{\dagger N}]$ when $[\hat{a},\hat{a}^{\dagger}]=1$?


Can't create a runnable jar with Intellij Idea

IllegalArgumentException or NullPointerException for a null parameter?


How can I graph these figures from scratch?

Best way to generate nice function plots in LaTeX?


how to update if exist else insert in php mysql

"INSERT IGNORE" vs "INSERT ... ON DUPLICATE KEY UPDATE"


Please allow new users to view close reasons on their questions

Can the OP please be allowed to see close reasons while the close is pending?


Orientation of vertices in a triangle and its area

Why area of a triangle is negative based on naming order?


Please add an option to search for posts < X votes in search


Meaning of the word "cut" in "cut me some slack"


Transit visa for travel to US from India via Frankfurt and Zurich

Is a Schengen visa/transit visa required for a transit flight through two Schengen airports?


Squaring floats between -1 and 1 reduces sum of squares, so why do it?

Why square the difference instead of taking the absolute value in standard deviation?


How do you determine if a String is a palindrome?


Principal component Analysis : EVD or SVD

What is the difference between "singular value" and "eigenvalue"?


The Markdown rendering on deleted content should be disabled or reduced


How to encrypt and decrypt String with my passphrase in Java (Pc not mobile platform)?

Java 256-bit AES Password-Based Encryption


what is difference b/w View.GONE and View.INVISIBLE

Android : difference between invisible and gone?


What were the planets destroyed in "Star Wars: Episode VII: The Force Awakens?


Can you use reflection to find the name of the currently executing method?


How to play audio files one after the other


Find $\lim\limits_{x\to 1}\frac9{1-x^9}-\frac7{1-x^7}$ without using L'Hopital


Unix - Delete folder with strange characters using inode or similar

Delete/repair files with weird permissions/owner/group


Help with Getting out of grub rescue: unknown filesystem after Deleting Linux Partition

How to remove Ubuntu and put Windows back on?


How can I manipulate a circular part of an image?

Create magnified call-out loupe effect on image


Trying to apply a function to an inverted matrix and a vector

Error: unexpected symbol/input/string constant/numeric constant/SPECIAL in my code


Is there bijection from $\mathbb R$ to $\mathbb R^2$?

Examples of bijective map from $\mathbb{R}^3\rightarrow \mathbb{R}$


How to filter a queryset for dates matching a given day?

Convert a datetime.date object into a datetime.datetime object with zeros for any missing time attributes


Unable to boot ubuntu 13.04 alongside windows 8


How can I stop getting notifications when my friends start games?

Now that Steam has removed the friends tab from settings how do I disable chat notifications sounds?


Better style for HTML 'definition list'  elements


Finding the sum of the infinite series $\sum_{k=2}^{\infty} \frac 1 {k^2-1}$

Hint on computing the series $\sum_{n=2}^\infty \frac{1}{n^2-1}$.


Why does part of my scene not appear in my final camera render but appears in all other situations?


Why doesn't Stack Overflow use an AntiForgeryToken?

What is the fkey that's present on some pages and what does it do?


Mac Program to Get the Latex code of a PDF


How can the unstable particles of the standard model be considered particles in their own right if they immediately decay into stable particles?

What is the essential difference between a resonance and a particle?


Debian Wheezy 7.1 - can't launch Skype or Firefox

Getting "Not found" message when running a 32-bit binary on a 64-bit system


Prepaid SIM card for short term - Canada

How can I find the cheapest prepaid SIM card for a given country?


MATLAB showing 0.82-0.80 not equal to 0.02 and similar error in inverting a matrix

Why is 24.0000 not equal to 24.0000 in MATLAB?


I did a Maths question on mechanics using calculus and physics students disagreed, why are the solutions different?

Revolving Beacon confusing calculus problem


Inverse matrix as a sum of matrix powers

Inverse of a matrix is expressible as a polynomial?


Why is $C_v$ used in the derivation of the adiabatic equation?


My Blender rendered pictures are pixelated


iPhone shuts off when battery is at about 20%

Why does my iPhone power off when the battery is down to 30%?


prove that $f_n = 37111111...111$ is never prime


If the universe is infinite, then how can we tell it's expanding?


How to check request is from the same client

How do I uniquely identify computers visiting my web site?


What's causing my java.net.SocketException: Connection reset?


How to write long arithmetic expressions in several lines in python?

How can I do a line break (line continuation)?


Prove that there exists 5 consecutive numbers, each of which is divisible by a cube of a positive integer greater than 1.

Prove that for each $n$, there exist $n$ consecutive integers, each of which is divisible by a perfect square larger than $1$.


An issue with the negative sign in a table

Minus isn't shown in exponent (superscript)


How to test multiple variables against a single value?


How to add a progress bar to a shell script?


Find a differentiable $f$ such that $f'$ is not continuous.


Are there any rules on the creation of a shield guardian?


How do electrons move across depletion region in npn transistor?

How does current flow from the emitter, through the base and to the collector in a NPN transistor?


Java Swing with Threads - repaint and two for loops give error with no hint

What is a NullPointerException, and how do I fix it?


Why do so many people go into Academia when the career prospects are so grim?

Why do students go for a PhD even when chances of getting academic jobs on its completion are slim?


Relation between eigen values of $AB$ and $BA$

The relationship between the eigenvalues of matrices $XY$ and $YX$


Interaction term and main effect multicollinearity

Collinearity diagnostics problematic only when the interaction term is included


Is there a way to search for non-english letters in file names?

What is the best way to remove accents (normalize) in a Python unicode string?


Roblox age restriction not lifted when I turn 13

When I turn 13 years old, will my account restrictions be lifted?


How do I upgrade to a newer version of Ubuntu?


How I can synchronise my configuration files and store the backup on another HDD?

Is there an application to manage config files in the /etc directory with version control?


What do ">>" and "<<" mean in Javascript?


Question mark or bold citation key instead of citation number


Creating a covariance matrix with specified variances and correlations

Why does correlation matrix need to be positive semi-definite and what does it mean to be or not to be positive semi-definite?


Setting onClickListener for the Drawable right of an EditText

Handling click events on a drawable within an EditText


What is the name of the Cygwin package manager?

Installing Cygwin packages from the command-line


When rolling a pair of standard six-sided dice, what is the probability that both dice land on the same number?

Why is flipping a head then a tail a different outcome than flipping a tail then a head?


python: How to pair separated dictionaries?

How do I convert two lists into a dictionary?


How to save the currently opened tabs (URLs) of Firefox into a text file?

Is there a method to export the URLs of the open tabs of a Firefox window?


Why is particle superposition still part of quantum mechanics?

How is it possible that quantum phenomenons (e.g. superposition) are possible when all quantum particles are being constantly observed?


In a = +a || 0, what does the '+' after '=' do?


Show that $F(a) = F(a^{2})$ knowing that $F(a)$ has odd degree.

Prove that if $[F(\alpha):F]$ is odd then $F(\alpha)=F(\alpha^2)$


How to install Oracle 18C XE version in ubuntu?

How to install Oracle 18C XE package on Ubuntu 18.04


Prove that $\left(1+\frac1 n\right)^n > 2$


How do you make buns hollow inside for filling?

How do I ensure that pita forms a nice big, even pocket when baking?


Tracking java exceptions by hooking into the JVM

How to report all exceptions in JVM, be it own or third-party code?


JavaScript closure inside loops – simple practical example


If $\lim_{x\to\infty}f(x)=0$, does $\lim_{x\to\infty}f'(x)=0$ as well?

Does the derivative of a continuous function goes to zero if the function converges to it?


How to remove duplicate values from a multi-dimensional array in PHP


How I can create a graph of acceleration and speed - tikz?


Can pmset's ChargeInhibit be used to prevent battery charging?


Prevent rotation of the bevel object (Should stay parallel to the XY plane)

Why does a bezier curve twist when rotated?


How to label pie charts in ArcGIS for Desktop?

Creating labels on Pie Charts in ArcGIS for Desktop?


How can I recreate this polygon/wire effect?

How to create a Geometric Polygonal Art portrait


Can we paint the plane in two colors such that there is no square of the same color?

Monochromatic squares in a colored plane


Expected value of a function of a random variable

What is the name of this theorem, and are there any caveats?


Ratios. In how much time could they complete the work?

How long does it take these boys to paint a fence?


How do I install Unity Desktop Environment in Budgie?

How can I make Ubuntu 18.04 / 18.10 desktop use Unity (be like Ubuntu 14.04)?


Can the existence of something be proven by logic alone

Can there be true conclusions without assumptions?


Reset CSS display property to default value


Name of a book featuring a "Book of Rules"

Fantasy series from the 80s about a world governed by a book of laws


Why Are 3pt and 0.0pt plus 3.0pt Different?


How do you find the distance from a point to a plane?


What is the meaning of posts.communityowned date?

Database schema documentation for the public data dump and SEDE


Regenerate a new keyhash and key cert after release?

Do I need to add new key hash to Facebook app setting every time I change computer?


Ubuntu 13.10 boots into blank screen after grub

My computer boots to a black screen, what options do I have to fix it?


Will google consider a UK language site and a US language site as duplicate?

International TLD's vs. duplicate content


Maximum eigenvalue of a hollow symmetric matrix

Determinant of a rank $1$ update of a scalar matrix, or characteristic polynomial of a rank $1$ matrix


Diffrence between /etc/init.d/ssh start and service ssh start

What's the difference between "Service" and "/etc/init.d/"?


Why the relation $H=B/\mu_0$ makes sense?

What's the difference between magnetic fields $H$ and $B$?


Dropping a question, and then just logging out and leaving


Why is Postfix throwing "malformed response" and "bad command startup" errors when I send mail?

postfix fails to send mail with "fatal: unknown service: smtp/tcp"


If you save to become immune to a creature's trait/ability, are you immune to that trait/ability from all such creatures?

Do the rules for combining magical effects apply to non-spell effects?


How does the light and energy breakdown depend on wave frequency?

Frequency dependence of electromagnetic reflection


Java Class that implements Map and keeps insertion order?


I want the "apache" user to own a dir but other users are adding via WinSCP

Automatically change ownership using WinSCP?


Java primitives support elimination? and exact purpose of retaining with new Java version release

Why do people still use primitive types in Java?


Why didn't Norrington try to save himself?


Omit specific subsection from table of contents?


Relation between Pascal's triangle and fibonacci series.

How to show that this binomial sum satisfies the Fibonacci relation?


Is downvoting a question that has been closed by the moderators allowed?

Why am I still losing reputation points on a questions that was already closed?


The numeric indicators for tag badge progress have been removed; by design?

Badge progress indicator missing number counts


Should links be forbidden in spoiler text?

Clicking on a spoiler tag to reveal the text shouldn't navigate you to another page


How to link a pdf file to a specific feature with QGIS?

How to add links to PDFs in a Shapefile?


Finding $(a, b, c)$ with $ab-c$, $bc-a$, and $ca-b$ being powers of $2$


If no text to write via StreamWriter, then discard (do not create) the file


Translate spanish characters to english for field values


Mixed effects models, why isn't the stdev of the intercepts equal to the estimate for the stdev for the random effects?

Understanding the variance of random effects in lmer() models


Is the expression 'of an evening', 'of a morning', 'of a Saturday', good English or dialect?

What is the meaning, history, and current popularity of "of a Monday" (or Tuesday, or Wednesday, etc.)?


Why can templates only be implemented in the header file?


Object array NullPointerException, Processing 3.3.6

What is a NullPointerException, and how do I fix it?


How to tell polarity expected of a DC barrel jack?


In the public opinion, why was Voldemort considered the greatest dark wizard of all times, and not Grindelwald?

Why is Gellert Grindelwald considered as second darkest wizard when he terrorised the whole European Continent?


How to prove that $\int_0^1 x^{-x}\text{d}x=\sum_{n=1}^{\infty} n^{-n}$

Series as an integral (sophomore's dream)


Different results when using different ways to calculate a function y = f(x)


How to unflag a comment when it was flagged by mistake?


How to express a 2nd order ODE as 1st order ODE's?


Is there any known way to compute this sum $\sum_{n=1}^{\infty}\frac{(-1)^{n+1}}{(2n-1)^3}$


How to make unlimited sheet of paper in LaTeX?


"on pace for ... users at 90 days" - how are these statistics calculated?

How are the "on pace for" metrics on Area 51 generated and are they being done so correctly?


How does Thanos do this using Nebula's beacon?


How to keep keys/values in same order as declared?


Cannot completely uninstall a repository/app


Can anyone recommend an app for creating flowcharts and diagrams?


How many syllables are there in the word "fire"?


How do I deal with a compromised server?


How do you solve a recurrence with a summation function inside: $t(n) = 1 + \sum\limits_{j=0}^{n-1} t(j)$


Spring MVC Service Implementation DAO is null

MVC Spring Implementation - error: java.lang.NullPointerException


Why doesn't my package load and execute?


Disable 'remember password' prompt from javascript or code behind

Disable browser 'Save Password' functionality


How to guarantee that equals() and hashCode() are in sync?

What issues should be considered when overriding equals and hashCode in Java?


Not logging in with correct password and username

Switching between virtual console and GUI


How can I build a circuit to convert sine waves to square waves at up to 1MHz?


Stop crontab from filling syslog Ubuntu 15.04


How to find votes that were made with under 15 reputation

Where can I see questions and answers I've upvoted if I have less than 15 reputation?


How to explain the source of funds transfered to my bank account for a UK visa?

What is 'funds parking' in the context of UK visa applications?


Order of WP page load (including widgets, php, plugins, media, templates, and CSS)

Is there a flowchart for WordPress loading sequence?


What is the difference between 0x and '\x' in C++?


How to replace a number with another one?

How to replace a string on the 5th line of multiple text files?


How to define a proof environment which can be displayed/hidden? [combining two TeX solutions]

How to ignore everything in the document environment?


What can I do if a repository/PPA does not have a Release file?


How to access PHP variables in JavaScript or jQuery rather than

How do I pass variables and data from PHP to JavaScript?


Does NetBeans have any "collapse all" shortcut for open directories in the navigator view?

NetBeans shortcut key for collapsing/expanding a method


Change default gnome-terminal to terminator

Unable to set Terminator as default Terminal in Ubuntu with Cinnamon Desktop


What is the term for young adult male/female (aged 18 to 25)?


Apparent SQL syntax error, updating multiple rows from form using PHP (PDO)

When to use single quotes, double quotes, and backticks in MySQL


(Does World of Warcraft have servers for all expansions?) Can I play old WoTLK?

Can I play old World of Warcraft expansions content on the latest expansions?


How to control the dimensions of \colorbox


For how long 12.04 LTS will be supported ? 5 or 3 years?

What's the difference between a Long Term Support Release and a Normal Release?


Someone always downvotes my question without helping me to understand what I did wrong


How to write a function like `document.getElementsWithAttributeName("attr-name")`?

Select elements with data attribute *not* using jQuery


Error in xml file (android programming): Unbound Prefix

frequent issues arising in android view, Error parsing XML: unbound prefix


How to identify the connection to charger port?


Django and virtualenv - Adding to git repo


Java : How to deal with multiple sessions in the servlet

How do servlets work? Instantiation, sessions, shared variables and multithreading


Why am I given the option to also encrypt my home folder after I've selected system encryption?


Italic correction fails when putting \textit into a custom command


Deleted all partitions from Mac mini except Boot Camp, now can't reinstall OS X


How to break through multiple for loop in python


Experimental justification for modelling electron as point instead of charged shell?

Experimental boundaries for size of electron?


IntelliSense not working but it is enabled


Template Changes in C++ Visual Studio 10 to Visual Studio 13

Where and why do I have to put the "template" and "typename" keywords?


Null pointer exception in designing a zoo in java

What is a NullPointerException, and how do I fix it?


For equal cost, why would you select the MacBook Air over the MacBook Pro?


Analagous references with different in-text-citation styles

Literature with Biber generates strange citations: firstnames appear erratically


How can I access and process nested objects, arrays or JSON?


If/Else Statement in Python ArcGIS Field Calculator

Writing conditional (if/then) statements into ArcGIS Field Calculator using Python Parser?


How do you restart unity? I have no menu bars

Unity doesn't load, no Launcher, no Dash appears


Why can't we convert the area element $dA$ to polar by multiplying the polar expressions for $dx$ and $dy$?

A doubt regarding change of variables in Double Integrals.


BibLaTeX escaping URL to %xx, but I want to write Unicode address

Non-English characters in URLs with Biblatex-Chicago + Biber


How does one get supergravity from string theory?

Steps for going from Polyakov action to low-energy effective action (SUGRA?) in String Theory


Junit failing with a null pointer exception


How do I extrude an object into another creating depth?


wget can see the internet, ping and git cannot

Wget and curl can work normally, but ping fails


How do I remove a malformed line from my sources.list?


How do I change the OS X updater App store user?


Addition of two algebraic integer numbers

How to prove that the sum and product of two algebraic numbers is algebraic?


Can I change from BIOS IDE mode to AHCI mode at any time?

How can I enable AHCI on a SATA drive after installing Windows?


Book series with an astronomer exploring a golden egg shaped spaceship in Earth orbit

Short story about an astronaut that enters an alien space ship and discovers it is a sarcophagus


$f:\mathbb{R} \to \mathbb{R}$ we have $f(b)-f(a)=(b-a)f'(\frac{a+b}{2})$ such function is polynomial of degree less than or equal to two.


How to eliminate tick marks, retaining tick labels, in ArrayPlot (and related functions)?


Removing the "about:blank" text from a new tab


ispalindrome recursive function in JavaScript

How do I check if a number is a palindrome?


Compute the integral $\int_{0}^{\infty} \exp(in\omega t-\gamma^2 t^2)dt$

Show that $\frac{1}{\sqrt{2\pi}} \cdot \left(\int_{- \infty}^{\infty} e^{itx} \cdot e^{-\frac{1}{2}t^2 } dx \right) = e^{-\frac{1}{2}t^2}$


How to have the system run a bash script to remap keys after login?

How can I persistently remap keys in Ubuntu 16.04?


Multiple inheritance with additional properties

Python: Correct way to initialize when superclasses accept different arguments?


Show that only one prime can be expressed as $n^3-1$ for some positive integer $n$

Is $7$ the only prime followed by a cube?


How do I find the MGF for this function? Completely lost...

What is the moment generating function of the Laplace distribution?


c++ template using declaration from base class

Where and why do I have to put the "template" and "typename" keywords?


Grammar: Should the sentence say, "my sister or I" or "my sister or me"?

"My wife and I's seafood collaboration dinner"


What are the rules on when to use commas, colons, semicolons and dashes?


How to require multiple permission group membership for file access?

Can a Linux user belong to more than one group?


How do you find out the caller function in JavaScript?


Get back default implementation of window.Map in Visualforce page?

Native JS Map prototype is overwritten in Visualforce page w/ a header


Ioc/DI - Why do I have to reference all layers/assemblies in application's entry point?


How did Pauli and Fermi deduce the existence of the neutrino?

Neutron decay and electron anti neutrino $n\to p + e + \bar{\nu}_e$


Why did Littlefinger give Sansa to the Boltons?


A linear operator commuting with all such operators is a scalar multiple of the identity.


How to login to Ubuntu after first install?


Difference between `variable = func()` vs `variable = new func()` when `func()` returns a function?

var functionName = function() {} vs function functionName() {}


How do I match any character across multiple lines in a regular expression?


I don't see that general relativity is really needed for GPS to work correctly


What is the benefit of casting time series models to state space form? And why are they often estimated with Kalman filters?

Why is forecasting of ARMA models performed by Kalman filter


How do I time a method's execution in Java?


Looping through form fields with different names

Iterate through all form elements irrespective of their type


Why is my crontab not working, and how can I troubleshoot it?


Radon measure on locally compact Hausdorff spaces


College number theory problem - need a pointer!


"-bash: /usr/bin/rename: Argument list too long"

Argument list too long when copying files


Is Java pass by value Or pass by reference Or both?

Is Java "pass-by-reference" or "pass-by-value"?


How to rename multiple files into their parent directory names using find


How to convert 160 digit binary string to 20 byte array?

In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros?


Is the following inequality True or False?

How to prove that $ \sum_{n \in \mathbb{N} } | \frac{\sin( n)}{n} | $ diverges?


Animating along a path with some rotation?

Why does blender erase transforms after inserting a keyframe?


PHP mbstring.func_overload vs using mbstring functions

Should I use multi-byte overloading (mbstring.func_overload)?


What is a NullPointerException, and how do I fix it?


How do i know the shaders and opengl version required are in my pc?

How do I determine if my integrated Intel graphics support "Shader Model 3"?


Biblatex with Biber: Configuring my editor to avoid undefined citations


How can I make the texture look like this?


Which preposition should be used after the verb “request”?

Is it correct to say "I kindly request you to..."?


How to Optimize Solution? (Project Euler #14)

Trying to visualize the Collatz conjecture


First difference estimation with time dummy

Is adding a time dummy the same as estimating by within-time fixed effects?


countability of the subset of cartesian product of integers

Is the set of sequences of natural numbers with trailing zeros countable?


Is the 50% loss of energy when charging a cap from a battery a set rule in stone?

A capacitor stores half the energy when charged from a battery each and every time?


java swing - button action performed doesn't work


"Thread 1: stopped at breakpoint" error when initializing an NSURL object


Book series for kids with boy and stones that went on belt

Children's fantasy series with a symbol consisting of a circle divided into quarters


theorem of existence of an orthogonal complement


NullPointerException when insertData() called in android

What is a NullPointerException, and how do I fix it?


How can I send someone a .blend file with cache folder included?

Moving all files to a new computer, my concern is links


How to hide Site Contents link using PowerShell


When is it ok to remove the intercept in a linear regression model?


Proving the combinatorial identity ${n \choose k} = {n-2\choose k-2} + 2{n-2\choose k-1} + {n-2\choose k}$


How to attach multiple ipv6 ips to eth1 on debian

Can I bind a (large) block of addresses to an interface?


Landing card, transit visa in Kuala Lumpur

Do I need a transit visa in Kuala Lumpur?


Automatically switching output audio device on 14.04

Automatically change Sound Input Output device


Problem with: $\int_{|z|=1} |z-1||dz|$ :contour integral with Abs. value |dz|

Computing complex integral with absolute value


using member of outer class in a inner class makes null exception?


How do I improve workflow when switching between programming on Ubuntu and Adobe apps on Windows?

How can I install Windows software or games?


Can I move the contents of the boot partition to the root drive?

How to move boot and root partitions to another drive


Updating the value of one variable updates the value of another

Why can a function modify some arguments as perceived by the caller, but not others?


How do I play with my friend in my singleplayer world easily on Minecraft PC?

Is it possible to have people join your singleplayer world?


Null pointer exception while setting onClickListener on an imageView in a fragment class

What is a NullPointerException, and how do I fix it?


How to save a figure remotely with pylab?

Generating a PNG with matplotlib when DISPLAY is undefined


null pointer exception in java when coding


Is heat energy from electronics wasted in the winter?

Is it wasteful to use a heating element, instead of doing useful work?


PHP - file_put_contents not working on server

failed to open stream: HTTP wrapper does not support writeable connections


Unable to store Japanese characters in Maria DB


Error Undefined Control Sequence: \Ginclude@graphics ... \Ginput@path

MiKTeX graphics version 1.3b bug on Windows 10 (\set@curr@file undefined)


Storing the last value and comparing changes in async function?

What is the scope of variables in JavaScript?


Prove that a number all of whose digits are either $6$ or $0$ cannot be a perfect square

Proving that a natural number made entirely of 6's and 0's is not a square.


Flatten the curve between all points (with an optional constant)

Minimize the standard deviation in list of numbers by subtracting from each value


Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference


Books for Condensed Matter after Ashcroft/Mermin


E: The repository 'http://au.archive.ubuntu.com/ubuntu zesty Release' no longer has a Release file

apt-get upgrade gives "403 forbidden" error


socket is not connected Android to pc tcp

What is a NullPointerException, and how do I fix it?


How to change Algorithm title to something else?

How to localize label using algorithm and algorithmic packages


What's the third request that serversockt accept from?


What are the plural forms of the words "octopus" and "platypus"?

What is the correct plural of "octopus"?


How do I specify a range of unicode characters in a regular-expression in python?


trying to overwrite 'file', which is also in package '*', how to solve?

dpkg error: "trying to overwrite file, which is also in..."


Why is this throwing an null point exception?


Why am i getting execute binary file error?

Why is my crontab not working, and how can I troubleshoot it?


Generate elevation profile graphs for multiple line segments in shapefile?

Replicate elevation profile extraction (3D Analyst toolbar) in ArcPy


Natural $(R/I)$-module structure for an $R$-module $M$ annihilated by $I$


How to plot asymptomatic curve and draw a bell curve on different points

Plotting Population Regression Function with pgfplot


Unable to correct problems, you have held broken packages


Generate all possible variable values in Python

How to get all possible combinations of a list’s elements?


using uialertcontroller in swift code cause crash when run the code on a iOS 7 device

UIAlertController if iOS 8, otherwise UIAlertView


yellow dotted wireframe appears when I mistakenly press Shift-t instead of Ctrl-t


Is it possible to include a lstlisting code block inside an lstlisting?


How can I get these two pgfplots to be exactly aligned?


I understand what a division ring is, but cannot find any examples. Can anyone give me one?

Examples of a non-commutative division ring


How to install software or upgrade from an old unsupported release?


How can I get the name of a field in an Object?


Why does this work in the Python IDLE shell but not when I run it as a Python script from the command prompt?

Importing installed package from script raises "AttributeError: module has no attribute" or "ImportError: cannot import name"


When is it possible to add different powers of a dimensioned quantity?

Why should transcendental functions and their arguments be dimensionless?


How to prove $\lim\limits_{n\to\infty}\left(1+\frac{1}{n}\right)^n=\sum_{k=0}^{\infty}{\frac{1}{k!}}=:e$

Prove the definitions of $e$ to be equivalent


How to overcome Coefficients: (4 not defined because of singularities)

Qualitative variable coding in regression leads to "singularities"


Let $a,b,c$ be positive numbers. Prove that $a^2b+b^2c+c^2a\leq a^3+b^3+c^3$


I can't use the terminal while gedit command is running


"Permission denied, please try again." ERROR when trying to connect to localhost through ssh

How to find out root password for installing software


how to create a vector that has a fixed number of points per decade?

How can I get exactly 5 logarithmic divisions of an interval?


How to start an external program from service

c++ get registry key returns only one char


"My goodness" expressed after hearing sad news?


Attempt to invoke virtual method: has an error java.lang.NullPointerException

What is a NullPointerException, and how do I fix it?


Error message while installing the development version of Wine: Ubuntu 18.04

Can't install wine from winehq.org on Ubuntu (actually Lubuntu) 18.04 LTS


Defining Functions in Sections of a MATLAB file

Is it possible to define more than one function per file in MATLAB, and access them from outside that file?


"SetPropertiesRule" warning message when starting Tomcat from Eclipse

Setting property 'source' to 'org.eclipse.jst.jee.server:JSFTut' did not find a matching property


String comparison doesn't work in while loop


Hiding an application from switcher (alt+tab)


Terminal method of formatting storage drive


Prove that $ x^4 - 2 $ is irreducible over $ \mathbb{Z}[i] $

Irreducibility of $X^n - 2$ over $\mathbf Z[i]$.


Naming threads and thread-pools of ExecutorService


Is the text of a closed question indexed by Google's spider?

Can closed questions be found on Google?


User can sudo from terminal but not when logged into gnome


What are your favorite English language tools?


About dual booting Ubuntu 16.04 LTS with Windows 10

Will installing Ubuntu to dual boot with Windows slow down any OS or my laptop?


How do I remove the Welcome Back at the top?

How can I disable the "Welcome, Name!" banner notification for Game Center?


Reduce speed of smooth scroll in scroll view

Android: HorizontalScrollView smoothScroll animation time


How to tell if a problem should use regression or classification model?

What is the difference between classification and regression?


Has there ever been a Vulcan/Klingon hybrid?

Are there any Star Trek characters that are hybrids of non-human species?


Traveling between Canada and China using two passports

I have two passports/nationalities. How do I use them when I travel?


Find the values of $p$ for which the series is convergent.

Convergence of the series $ \sum_{n=1}^{+ \infty } \frac{1}{n \cdot \ln(n) \cdot (\ln(\ln(n)))^{a}} $


Can a method be overloaded to return different types without a unique parameter list in its signature? In C#

Why can't two methods be declared with the same signature even though their return types are different?


In C++11, dow can I reference an enum class defined inside a template argument

Where and why do I have to put the "template" and "typename" keywords?


Edit your communities button doesn't appear on Stack Exchange's homepage

Why I can't edit "Your Communities" list in stackexchange.com and Area 51?


Short story where man rejected from learning program and identified as untrainable

Story where the protagonist is turned off from an automated system of professional attribution and instant learning


How can I select an element with jQuery by matching a partial attribute?


How to map a specific value into RGB-color code in Matlab

How to create a custom colormap programmatically?


How do I find out which version and derivative of Ubuntu is right for my hardware in terms of minimal system requirements?

What is the difference between Ubuntu and its derivatives?


Failed to reconnect to my previous account

How can one link / merge / combine / associate two accounts / users? (Anonymous / unregistered / cookie, or Google / Facebook / registered)


CSS child elements "margin-top" property affects parent element

Margin on child element moves parent element


"In" and "on": How can I decide which one to use for vehicles?


Automatically restart a Unix job if it goes down?


Determine square of distance between local maxima and local minima

Distance between local maximum and local minimum


Why can't C# compiler infer generic-type delegate from function signature?

Why can't C# infer type from this seemingly simple, obvious case


Why does the terminal not hold my root password for sudo?

How often is the password asked for sudo commands? Where can I set it up?


Java project: should .classpath .project file be committed into repository?

.classpath and .project - check into version control or not?


order of execution in an expression with commas in C++


What does "user was removed" mean and why did my reputation change because of it?


How can I pass a parameter to a setTimeout() callback?

Pass an extra argument to a callback function


Installation of Ubuntu 14.10 alongside Windows 7

"Install alongside" option missing. How do I install Ubuntu beside Windows using "Something Else"?


Can't remember a story about people having unique knacks

Identify a short story involving a blond that makes a fire poker sag


Unexpected behavior of rule matching a pattern


How can I download multiple photos from Google drive without clicking on each individual photo?

How to download multiple Google Drive photos from URLs?


Problem with \maketitle and \affil (authblk package)

Multiple authors in a Journal style (llncs) Document


Expression for the Fourier transform of $f(x) = \frac{1}{1 +\|x\|^2}$

Integral in $n-$dimensional euclidean space


How to add or remove subscriber from auto suppression list using php sdk

Remove subscribers from Auto Suppression List


Python referenced local variable before assignment


Apostrophes via Mac not saving correctly to db


Error: invalid_client no application name


eyes blinking error Bone Heat Weighting: failed to find solution for one or more bones

heat weighting: failed to find solution for one or more bones


How do I fix apt-add-repository "no such option: --allow-unauthenticated"?


JavaScript array - push multi dimensional array


Verifying some trigonometric identities: $\frac{\csc\theta}{\cot\theta}-\frac{\cot\theta}{\csc\theta}=\tan\theta\sin\theta$


Let $T,S$ be linear transformations, $T:\mathbb R^4 \rightarrow \mathbb R^4$, such that $T^3+3T^2=4I, S=T^4+3T^3-4I$. Comment on S.


"If you don't mind me asking" or "If you don't mind my asking"?

When is a gerund supposed to be preceded by a possessive adjective/determiner?


Cleaning small block of code (Switch, Case, If?)

Using Action dictionaries instead of switch statements


Where do I ask opinion based questions on Stack Exchange?

Give each site a parallel site for polling, recommendations and subjective-ish stuff


Why is the complexity of reverse algorithm O(n)?

What is a plain English explanation of "Big O" notation?


How to include Matlab code into LaTeX in colour?

What can I use to typeset MATLAB code in my document?


I have a exploit virus detected by ClamTK that I Can't remove

ClamAV: PUA.Win.Exploit.CVE_2012_0110 FOUND (/usr/share/mime/mime.cache)


Problem with getting out of an answer ban

What can I do when getting "We are no longer accepting questions/answers from this account"?


"Had they not intervened" OR "If they had not intervened"


How to write a password which contain "&" in app.config

How can I add an ampersand for a value in a ASP.net/C# app config file value


Is this video's notion of general relativity correct?

What does it mean for objects to follow the curvature of space?


Unable to login with Stack Exchange OpenID on Area 51

Unable to log in with your OpenID provider: Message signature was incorrect on Area51 only


Achievements menu: Can you tell me why I got reputation?


Which log will tell me why my computer shut down?


What is the correct way to create a Persistent Ubuntu 20.04 Usb?

How is it easier to make a persistent live drive with Ubuntu 19.10?


Hypothetical equation (modulo a power of two) and the value


DDoS nulling to some ips and other options?


Git for beginners: The definitive practical guide


Is there a difference between "==" and "is"?


Find x in degrees: (there souls be 2 answers from 0 degrees to 360 degrees) 5cos(x)=2sec(x)-3


Is it valid to use "literally" to mean "actually" when composing a hyperbole?


Estimated probability looks too large, what I am doing wrong?


What is the minimal capacitor (capitor type/size/capacity) needed to fool a capacitive touch screen?

How can a capacitive touch screen be triggered without human contact?


Use a subrange of all arguments in a Bash function


Copy properties between objects in JavaScript

How can I merge properties of two JavaScript objects dynamically?


What is the preferred/idiomatic way to insert into a map?


How to diagnose slow booting or logon in Windows?


Can we carry three new smart phones in hand luggage to India?

How much electronics and other valuables can I bring duty-free when going to India?


batch that change particular string on a .txt file


Javascript -- reliable to use numbers as integers?

What is JavaScript's highest integer value that a number can go to without losing precision?


SQL: trying to find rows that contain the char '1'


Database design - passenger, driver, wallet. How to handle multiple foreign keys with Id and type fields?


"Unable to connect to Upstart" error when installing git-all


Converting HTML string into DOM elements?

Creating a new DOM element from an HTML string using built-in DOM methods or Prototype


Normal Map bad shading in Rendered display

Some areas of the mesh are dark (Shadow artefacts)


How to initialize private static members in C++?


Good examples of RAW's advantages over JPEG?


Why remove the vegetables from vegetable stock?

Are the leftovers from making stock good for anything?


Prove that $\frac{\xi}{n} \to 0$ , where $\xi = \max(f_1 \dots f_n)$

For i.i.d. $\{X_n\}$ proving $\frac1n\max\limits_{1\leqslant k\leqslant n}|X_k|\xrightarrow{\mathrm{a.s.}}0\Leftrightarrow E(|X_1|)<+∞$


Prove that the set of positive integers can be expressed as a countably infinite union of disjoint countably infinite sets.

Expressing a Countable Union of Sets as the Countable Union of Disjoint Sets (e.g. Eliminating Duplicate Intersections)


What does ~/ mean before a directory's name in the terminal?


What are the reasons that the emitter is heavily doped in an NPN BJT?

Collector Doping Concentration and Current Gain


Why are $i$ and $-i$ "more indistinguishable" than $\sqrt{2}$ and $-\sqrt{2}$?


Modal - Node Edit: What is the correct path?

How to load a node edit form using Ctools module in Drupal 7


Calling non-static methods from other classes

Non-static variable cannot be referenced from a static context


grep -r is not working in HP-UX. Is there any alternative commad to be used instead of grep -r in HP-UX?

In HP-UX server, grep -r option is not working


Relation bewteen Hessian Matrix and Curvature


insufficient space while updating WhatsApp on CyanogenMod


How can I check if iPhone has been manipulated or compromised firmware?

Will an iOS reinstall make a jailbroken iOS device "unjailbroken" and “supported by Apple” again?


Is there a way to flat plane object affecting by proportional edit?


Error CS0120: An object reference is required for the non-static field, method, or property 'Control.Controls'

CS0120: An object reference is required for the nonstatic field, method, or property 'foo'


Why does a fourier series have a 1/2 in front of the a_0 coefficient


What is the value of $\prod_{i=1}^\infty \left(1-\frac{1}{2^i}\right)$?

How to solve the limit $\lim\limits_{n\to \infty}(1-a)(1-a^2)\cdots(1-a^n)$?


How to detect that arrow key is pressed using C under Linux or Solaris?


How do I find which process is causing a file to lose its permissions?

Is it possible to find out what program or script created a given file?


Reference request: introduction to commutative algebra


Custom Button and Link can't use VF Page


Remove HTML tags from string (R Programming)


IPC problem in the c# - ipc is already registered


Schengen Visa Refusal: Justification for the purpose and conditions of the intended stay was not reliable


How can I automate calculation of time complexity of algorithms in JavaScript?

Programmatically obtaining Big-O efficiency of code


How R formats POSIXct with fractional seconds


How to start a C# console application as administrator

WCF wsdualhttpbinding client without elevation


External drive is considered read-only on shell and in Nautilus

Can't delete files or folders on partition


Is there a rational number between any two irrationals?


Notepad++ does not automatically make end tags

Notepad++ auto complete HTML end tags after </ (like Dreamweaver does)


Why is $\operatorname{Int}(A) \cup \operatorname{Int}(B) \neq \operatorname{Int}(A \cup B)$?


What does the $L^p$ norm tend to as $p\to 0$?


directory size inconsistent between "du *" and "du file"


Is there a PPA with the latest version of LibreOffice?


How to get image size (height & width) using JavaScript?


Can the Mathematica calculate the curve integral of the second type？

How to do a line integral visually in version 10 or later


Remove meta.SE reputation changes from voting to allow everyone to participate like normal meta sites


Get projection or calculate latitude and longitude from a central point

Draw a line of desired length and bearing in OpenLayers?


Ubuntu "USB for OS X" instructions doesn't create bootable USB drive

How do I get my Mac to boot from an Ubuntu USB key?


How to make a villager move out in Animal Crossing New Leaf?

Is there a way of moving unwanted villagers out faster?


Limit $\frac{n^{2k+1}}{2k+1}\log(n)-\frac{n^{2k+1}}{(2k+1)^2}$ to evaluate the integral $\int_0^{\infty}\frac{\log x}{x^2-1}dx$

$\int_0^\infty\frac{\log x dx}{x^2-1}$ with a hint.


How to I use Map to apply a defined function to a list?


What are some good books on foundations of Thermodynamics

Recommendations for statistical mechanics book


Can I create a bootable Linux live USB flash drive using a Windows computer?

Is it possible to create bootable linux on USB drive using windows command line?


Will utilizing a TIP120 transistor to control the power from 2 9volt batteries in series powering a 12volt fan generate heat?

Multiplying the voltage of an output pin on an Arduino board


What is a NullPointerException, and how do I fix it?


How much do monsters get from Change Shape?

What is considered a class feature for a monster for the purpose of Change Shape?


How to allow file xfer for users to/from a system, but not ssh, without changing their shell

Provide sftp read/write access to folder and subfolders, restrict all else


Vim: automatically highlight all occurences of selected word

Highlight all occurrence of a selected word?


Ubuntu 18.04 - no Wi-Fi adapter - Killer Wireless 1550

Alienware 17 R4 Ubuntu 16.04 WiFi driver


isset() function is returning true even when item is not set


Whitespace in preformatted blocks not shown on mobile

Inline formatting in the Stack Exchange apps and mobile web eats spaces


Computer does not boot after changing hdd and reverting back

Why do I have to repair my booting when swapping harddrives in my laptop?


Flying back to Hawaii from Stuttgart Germany - Need Visa?

Is there a way to find out if I need a transit visa for a layover in the UK?


Why does my Android OS state that there's, "Not enough free space to install the program", when there's plenty of free space?

Google Play: Error downloading app - insufficient space


My structures are not marshalling into json


How to use MethodInvoker on Dynamic (RichTextBox)TabControl

Cross-thread operation not valid: Control accessed from a thread other than the thread it was created on


A circle has the same center as an ellipse and passes through the foci $F_1$ and $F_2$ of the ellipse, two curves intersect in $4$ points.


Logical Volume Group 17gb "Available Space"


Stack Overflow Syntax Highlighting Bug on Android Application

Syntax highlighting hint is ignored in Android app


Add tutorial in the starting of application

android: How can I implement first time tutorial like Go Launcher in my app?


Dependency is not satisfiable: lib32gcc1 in Google Chrome

Google Chrome update won't install due to unmet dependencies


Can the universe have a definite energy density?

Is the total energy of the universe zero?


Setting up a shared folder with group: ACL and file creation

How to set default file permissions for all folders/files in a directory?


A tool that migrates data from database A to B has been developed

Software Tester Job Interview: Case studies on Test Design


MongoMapper not treating "id" and "_id" equally: returning nil for "id" but the correct Mongo ID for "_id"

Unset operation failing for MongoMapper model, cannot delete / remove key from model


Proving that if left coset multiplication is well-defined then $H$ is a normal subgroup

Why do we define quotient groups for normal subgroups only?


How to convert double into int in angular js?

How do I convert a float number to a whole number in JavaScript?


It is a painting by / of a famous painter


Can I extract VB6.0 Source Code using its EXE File


Is it correct to hyphenate with compound premodifiers? If so, where is the hyphen placed?


If a question ends in the abbreviation of et cetera, do you still add the period before the question mark?

How to deal with abbreviations at the end of a question?


Prove: For $m,n,a \in \mathbb{Z+}$, if $m \gt n$, then $a^{2^n} +1 \mid a^{2^m} -1$


What would happen to a wizard / a witch if they never find out they can do magic?

What if the parents of a Muggle-born witch or wizard refuse to let them attend Hogwarts?


Generic Function To extract Decimal part of a float without Floor()

How to extract the decimal part from a floating point number in C?


The habitual past "would" versus "simple past" tense


Is it possible to get/where can I get consumer level paid support

Does Canonical provide paid support for individuals?


PDOException on Article page : Base table or view not found

PDOException when creating the table: Base table or view not found


What is a generic method and how is  bound in this case?

Java Generics: Generic type defined as return type only


How can I access blocked websites in firefox?

How to bypass web URL filtering service to access blocked websites (proxy)


How do I split a string so I can access item x?


Can we use the use frontdoor link to redirect to a salesforce record directly by passing parameters?


What is happening with this reference variable?

Is Java "pass-by-reference" or "pass-by-value"?


Image of a Borel set under monotonic functions


How to address severe class imbalance with lots of zeros in the columns?

Are unbalanced datasets problematic, and (how) does oversampling (purport to) help?


What does error code 1853227065 mean in minecraft launcher log

Is there a list of error codes for Minecraft?


Is there any command to copy and cd into that directory same time in terminal

How can I create a directory and change my working directory to the new directory?


Why trapezoidal rule is giving better answers for some functions than Simpson's 1/3 rule?

For numerical integration, is it true that higher degree of precision gives better accuracy always?


Why do some commands 'hang' the terminal until they've finished?


Open links from questions and answers in new tab

Make links posted by users open in a new window


How to remove duplicate values from an array in PHP


South African on a charity visa in the UK. I need a Schengen visa. What would be the easiest to get the visa?

What's the quickest Schengen consulate to issue a visa in London?


how retain count of NSString type variable is increased?

Objective C NSString* property retain count oddity


How do I make combinations between the values in lists in python?

Get the cartesian product of a series of lists?


I don't know how the colon and question mark works in this code

How do I use the conditional (ternary) operator?


Validation error value is not valid: primefaces


Dual monitors, stick windows to the side of the screen in windows 8.1

In Windows 7 you can drag a window to each side to split to 2 screens, can you get 4 with multiple monitors?


How to get properties of object in python

Is there a built-in function to print all the current properties and values of an object?


Remove Google Play Services from no-root Android 8.1 phone

Is there a way to remove the stock Google apps without rooting your phone


Why are class members private and properties public?

What is the difference between a field and a property?


Returning two strings in a function in C#

Return two strings with a function in C#


Why light cannot pass through wall whereas Sound can?

Why can't light pass through walls but sound can?


Can I tell Mac OSX to lie to an installer about my OSX version?

truecrypt 7.1a requires Mac OS X 10.4 or later on Yosemite 10.10


List the full dependency list of a package


When evolving Pokemon, how is the evolved CP calculated?

Does it make a difference to CP if you feed candies before or after evolving?


Topology generated by those subsets of $X$ which are preserved by images of nets in that subset by a function

$N(X)$ denotes collection of all nets of $X$. $T:N(X)\to \mathcal{P}(X)$ be a map such that $T\{x_\delta\}=T\{y_\gamma\}$ if one is subnet of other.


Notification icon that looks like 3 stacked horizontal bars

How can I deduce/identify an app from a notification icon?


'Unfriendly or unkind' flag not showing in flag summary

Updated comment flagging - Supporting the new Code of Conduct


Ubuntu showing low disk space on file system root


Loopcuts ignore surface on messed up mesh


How do I move a point without affecting other points/plains?


How can I put back the Messages window back to the main Notebook?

How to show error messages in current notebook?


Does wp_query and query_posts affect website performance?

When should you use WP_Query vs query_posts() vs get_posts()?


Is there a way to restrict the title crawl to certain portion of screen?


Unit test is throwing a linking error when functions are defined in .cpp file and compiles successfully when defined in .h file

Why can templates only be implemented in the header file?


How to change mouse pointer to hour glass on button click in web application?

Changing the cursor in ASP.NET while loading doesn't work without a JS alert


Duplicate values in GROUP_CONCAT when using two many-to-many


How can I take product shots of a flat (but not absolutely flat) reflective surface?

What is the best approch to photographing a mirror or other highly reflective surface?


If $f$ is measurable and $fg$ is in $L^1$ for all $g \in L^q$, must $f \in L^p$?


Why does an argument similiar to $\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+...=1$ show that $2+4+8+...=-2$

Why does an argument similiar to 0.999...=1 show 999...=-1?


What is the advantage of using Properties over private fields and get/set methods?

What is the difference between a field and a property?


partitions showing different sizes on gparted and MS Disk Management


Do veteran users get more weight in the close vote reasons?

How SO handles close reason on equal number of Close votes different catagories


Why does leaving the dot out in foldLeft cause a compilation error?


SSL is required but the server doesn't support it

Cant connect to mysql using self signed SSL certificate


What JavaScript pattern do I use to access private methods from a prototype method?

Accessing private member variables from prototype-defined functions


Where to place and how to read configuration resource files in servlet based application?


Sum values to the right of criteria in multicolumn range


Prove that $b\cdot\aleph_0=b$, where b is an infinite set.

How prove this equation $\alpha=\aleph_{0}\alpha$


Will adding Featherfalling to my protection 4 boots help?

Which configuration of armor enchantments gives maximum protection?


Unable to use the /tag command to tag if wielding a specific item

Why does my item name not show up in 1.13?


SQLite Database in Fragments - Android Studio

What is a NullPointerException, and how do I fix it?


iOS 13 public release is not showing in my iPhone Software Update

Downgrading from iOS 8.1 beta 2 to iOS 8.0.2


Expand magic tag-links so all sites can be specified

Allow [tag:tag-name] syntax to link to any site


My WPF UserControl doesn't receive input when hosted in a WinForm Form

WPF WinForms Interop issue with Enable / Disable


How to test if certain assemblies have been loaded into memory?

How do you loop through currently loaded assemblies?


Temporarily highlight html element when jumping to section on webpage

How do you fade in/out a background color using jquery?


Buying my first off-camera light. Flash or always on-light?

What should I consider when choosing continuous lighting vs. strobes for studio photography?


PHP shell_exec wait for script to finish?


what does the "L" in "L-function" stand for?


Why does the transparent glass material not allow the emission to pass through?

How to illuminate the darkness inside glass objects in Cycles?


BarChart with Log-Scaling and Error-Bars

How to plot BarChart with error bars on logarithmic scale in Mathematica 9?


Java TextField getText() give me a string that I can't compare


How to use possessives when the subject has a number after?

"The queen of England's crown" or "The queen's of England crown"?


can my child fly to Pakistan with me with proof he has been approved. My child is dependent on me he is 18 months

Going to Pakistan in 3 weeks time but my NICOP is expired and my son's hasn't arrived yet


Which tools and technologies are used to build the Stack Exchange Network?


How to make a certain bash script execute when I enter a certain directory?

Execute bash scripts on entering a directory


How can I duplicate Apple's tiny USB power adapter?


How do I install the latest version of VirtualBox on Ubuntu 14.04 (Trusty Tahr) LTS?

How to install VirtualBox to use Windows or other OS?


Does the Spirit Guardians spell stack with multiple casters?


Android Studio : Adding Elements to a List Situation

What is a NullPointerException, and how do I fix it?


Is there a way to hide from imperial troops?

Is there a way I can avoid imperial ships?


Definition of moments and the different approaches to compute them

Why the first moment is standardized before computing higher moments, but higher moments are not?


Cannot see any figure on SE site from today


Ubuntu - Recommended Minimum System Requirements

What are the system requirements for each flavour of Ubuntu Desktop?


How do the tenses and aspects in English correspond temporally to one another?


Mysql_query() expects parameter 1 to be string

mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc... expects parameter 1 to be resource


How to solve the integral $\int \sqrt {\sin x+1}$

How to evaluate the integral $\int \sqrt{1+\sin(x)} dx$


Prove $(A+B)^2 = A^2 +2AB + B^2$ for commutative matrices

For all square matrices $A$ and $B$ of the same size, it is true that $(A+B)^2 = A^2 + 2AB + B^2$?


If $f(b)-f(a)=(b-a)f'(\frac{a+b}{2})$ prove that any such function is a polynomial of degree $2$

Functions satisfying $(b-a)f'(\tfrac{a+b}{2}) = f(b)- f(a)$


How to delete some elements from a list?

What are the most common pitfalls awaiting new users?


In a C/C++ program, how can I write bold text in the terminal?


"He swept the floor with his jacket and lay down..." (Excerpted from "The Alchemist," by Paulo Coelho) is grammatically incorrect?


Finding example of a convergent series $\sum a_n $ such that $\sum a_n^2 $ does not converge

Show a convergent series $\sum a_n$, but $\sum a_n^p$ is not convergent


Is PCA still done via the eigendecomposition of the covariance matrix when dimensionality is larger than the number of observations?


Is it appropriate to buy a “thank you” gift for a MSc supervisor?

Is it appropriate to buy a "thank you" gift for a PhD supervisor?


A Significant Performance Drop after using lambda expression to override a Comparator. Why?

How do I write a correct micro-benchmark in Java?


Can you Wish for a Glyph of Warding with an 8th Level Spell?

Does wishing a spell glyph into existence also require casting the stored spell?


How to join two expressions with AND, OR


Show that f is discontinuous at every rational and continuous at every irrational.

Prove continuity on a function at every irrational point and discontinuity at every rational point.


Windows 7 - High CPU usage during idle time

Program that logs the CPU usage in Windows 7


How many points does the perspective in the viewport use and is it changeable?


Prove that, if n is an integer and n REM 4 = 2, then is not a perfect square

Prove that if $n$ is a perfect square, then either $n \equiv 1 \pmod 4$, or $n \equiv 0 \pmod 4$.


Shamir Secret sharing - Can share generator keep x values secret?


Find all $z$ such that $(z+1)^7 = z^7$. You do not have to put your answer in the simplest rectangular or exponential form.

How to solve the equation $(z+1)^7 = z^7$ for all $z$?


If a black hole was near enough us to be seen by telescope (by eye), if it ate a star, how long would we be seeing the star being eaten?

Can black holes form in a finite amount of time?


How to combine two list of lists to a new list

Get the cartesian product of a series of lists?


Remove "How to Ask Questions in Private Beta" from final sites

“How to Ask Questions in Private Beta” is listed in every site’s help centre


How to create dependent dropdown in drupal 7 content type?

Dynamic select list in the form (dependent dropdown)


Somebody created subdomain without my knowledge. How?

Phishing site uses subdomain that I never registered


not able to install Unity tweak in Ubuntu 12.04: 404 Not Found error

How can I fix a 404 Error when using a PPA or updating my package lists?


Run a Javascript function after a default jQuery function is run

Event binding on dynamically created elements?


How to change the text format of the body field of 200 nodes at once?


linux + tool that can identify RAID configuration

how to identify if raid1 or raid mirror configure on OS disk


Does anyone know an example of a local homeomorphism from the open unit disc onto itself that is not a homeomorphism?

surjective immersion $\mathbb{R}^2 \to \mathbb{R}^2$ which is not a diffeomorphism


User has for each not active account 5 x 101 Points - is that possible?


How do I fix this "E: Type '*' is not known on line * in source list ..." update error?


What is the time complexity of these dependent nested loops?

Big O, how do you calculate/approximate it?


Installing and using pip, "SyntaxError: invalid syntax"

Why does "pip install" inside Python raise a SyntaxError?


How can I pick the correct avocados for guacamole?

How can I choose good avocados at the supermarket?


On the integral $\int_{0}^{1} \frac{\mathrm{d}x}{\sqrt{3x^4+2x^2+3}}$

Integrating $\frac{1}{\sqrt{ax^2+bx+c}}$ for $a<0$


Object doesn't recognized, how to solve?

CS0120: An object reference is required for the nonstatic field, method, or property 'foo'


Prove that this sequence diverges to infinity.


Does the rich snippet have to be present visually on the published page?

Do search engines index a rich snippet data from HTML which is not visible?


How does Windows do case-insensitive file names and paths?


How do I install Ubuntu to a USB key? (without using Startup Disk Creator)


HTTP request parameters are not available by request.getAttribute()


Show that $x^2 + 1$ has an infinite number of roots in Q.


Using MySQL results array more than once

Get all mysql selected rows into an array


Why is the next scheduled run date for my SQL Server job NULL?

Why might Sql Server Agent's Next Run Time value not be what I expect? And is this definitely the next time my job will run?


How to convert unsigned hex values to corresponding unicode characters which should be written to file using c++

UTF8 to/from wide char conversion in STL


Why are elementwise additions much faster in separate loops than in a combined loop?


How does using a teleconverter affect the aperture of a lens?

Does using an extender actually change the aperture of the lens?


Why did Princess Leia knowingly lead the Deathstar to the Rebel base?

Why is Leia okay with being tracked to Yavin?


How to extract Highlighted Parts from PDF files


If two distinct primes divides the same number, will their product divide this too?

Let $a\mid c$ and $b\mid c$ such that $\gcd(a,b)=1$, Show that $ab\mid c$


How can I find which command is bound to a given keyboard shortcut?


Generating Device-Specific Serial Number


Pipe/redirect password into ssh for automatic login?

SSH login with clear text password as a parameter?


Append the content of FIleA.csv to an other FileB.csv in java

How to append text to an existing file in Java?


How to copy functions from one object to another?

How can I merge properties of two JavaScript objects dynamically?


Is it safe to remove files/folders from .cache?

Is it okay to delete the ~/.cache folder?


C++ Difference between: Obj*& vs Obj** vs Obj&&

What are the differences between a pointer variable and a reference variable in C++?


Sound picker / List of system sounds on macOS

Playing system sound without importing your own


How to prove that $\sum_{k=0}^n \binom nk k^2=2^{n-2}(n^2+n)$

Induction: $\sum_{k=0}^n \binom nk k^2 = n(1+n)2^{n-2}$


this class is not key value coding-compliant for the key view

Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant for the key X" error?


How to compute the derivative of the magnitude of a vector?

Symbolic linear algebra gradients/matrix calculus


Kindly anyone explain custom delegates in objective-c with a simple coding example? Step By Step

How do I create delegates in Objective-C?


How do you change the size of figures drawn with Matplotlib?


Is "'ve to" instead of "have to" correct?


Using regular expressions to parse HTML: why not?


Show that $\alpha+ \beta$ is the supremum of $A + B$.


Applying for a new Schengen Visa even though there's still an existing used schengen visa

Can I have multiple Schengen visas for future travels in my passport?


N: Ignoring file 'ethereum-ubuntu-ethereum-xenial

How do remove "Ignoring file in directory /etc/apt/sources.list.d/ as it has an invalid filename extension?


Smaller operator gives error in javascript code

Error parsing XHTML: The content of elements must consist of well-formed character data or markup


What are the requirements to use iMac screen as a second monitor - Target Display Mode?


Mud cannot be planted with Glowing Mushroom Seeds?

How do I set up a Glowing Mushroom farm in Terraria?


Solving the functional Equation $f(f(x))=f(x)+x$

Solving (quadratic) equations of iterated functions, such as $f(f(x))=f(x)+x$


What happens to photons under the action of gravity?


parse extra information in a link with javascript

How can I get query string values in JavaScript?


Is there a way / is it okay to bump feature requests?

How do I get attention for old, unfixed bug reports and feature requests without official responses here on Meta?


What is the difference between converges in probability and distribution

Intuitive explanation of convergence in distribution and convergence in probability


How can I select top and bottom vertices at the same time in top view?

How do I select vertices that are directly under the other?


How does the .split() method work in java?


Google search results shows every page on my site as a separate result

What are the most important things I need to do to encourage Google Sitelinks?


Given a list of date and value pairs, efficiently sum the values by date

Combining values in one column (or part) when values in another column (or part) match


Can I Enter Italy in a valid visa and exit in another?

Visiting Greece with back-to-back Schengen visas (One from Germany, other from Italy)


Install PyCharm on Ubuntu 15.10 - E: Unable to locate package pycharm


How to create a buisness card with an embossed effect?


how can I update ubuntu v12.04 to v13.04 without using a internet connection?

How do I upgrade to a newer version of Ubuntu?


How to sign out of iCloud on iPhone and Macbook without having access to rescue email and with Find my iPhone and Find my Mac turned on?


I am a US Citizen born in the US. I am american. I am traveling to Philippines

Do I need a visa to transit through South Korea?


How to find out where the "grub" is installed

How to know the partition where grub is installed


Domain Administrator unable to decrypt files with EFS recovery certificate

How to use backup EFS certificate to decrypt encrypted files?


Prove that the determinant of a swap matrix is $-1$

Determinant of elementary permutation matrix


Ugly "Next Privilege" text on user activity page


How can I open two urls in two tabs in a single click?

How to make a link open multiple pages when clicked


Find dates common to all sites in data frame

Extract elements common in all column groups


How to get Analytic s licenses for my developer edition?

What is Salesforce Wave Analytics? What is the need for it?


Hey, on using the parameters areEqualByThreeDecimalPlaces(-3.1756, -3.175), i am getting an error: More in the Details below


How can I execute `date` inside of a cron tab job?


Checking if value in vector is in range of values in different length vector

Overlap join with start and end positions


What is a NullPointerException, and how do I fix it?


What is a good way to cut a plastic drum in half?

What tool should I buy to cut through very hard plastic?


Installing grub2 in efi-mode in usb flash drive


What to explore in math after 12th class(india)

Which topics of mathematics should I study?


Cannot configure dual screen on a Lenovo W530 with optimus on 14.04


Man sent to a crystalline planet gets his eyes replaced


Creating command from some of the arguments to a bash script including whitespaces

Why does my shell script choke on whitespace or other special characters?


is there a way to copy files from a mac osx machine to NTFS external hard disk

How to copy files to read-only NTFS hard drive on a Mac?


Tightest convex set containing curves of length 1

What is the smallest convex set includes all smooth unit curves?


How to show that if $X \sim \Gamma(n/2, 1/2)$ and $Y \sim \Gamma(1/2, 1/2)$ then $X + Y \sim \Gamma((n+1)/2, 1/2)$?

Sum of independent Gamma distributions is a Gamma distribution


How do I migrate my Windows desktop to a VirtualBox VM?


When will my device get the Android 4.4 update (KitKat)?


Possible To Raise Associate Salary In GTA Online As A CEO?


What's the appropriate way to do "mv ./* ./subdirdir/"?


Regular Expression - Phone Number - Android


Is there a way to instantiate objects from a string holding their class name?


What is the default location for rsync uploads?


Information contained in Lagrangians and actions


Will the download from Epic Games resume after hibernate

Downloading in Epic Games Launcher starts from 0% after pause and reboot, why?


Date comparison is coming back false even though the Date is equal


deleting item from database after 30 minutes

Delete MySQL Row after 30 minutes using Cron Jobs/Event Scheduler


Evaluating string "3*(4+2)" yield int 18


Wanted to know the correct way of using sed command by inserting text from one file to another?

Putting a piece of code in between two html tags in Solaris


Homogeneity and Differentiability at $0$ implies linearity?


Creating a Legend with arcpy and comtypes


Java Date() is auto correcting the date we type in an input text field


Similarity in the solution for diffusion and Schrödinger equations

Connection between Schrödinger equation and heat equation


How to clone relative to an entity's coordinates?

Can I /clone relative to entities, not the command block?


How do I choose in a 3d plot of 2 functions the color of the second one, if I only plot 1 function?

What are the standard colors for plots in Mathematica 10?


Do I need to reinstall drivers on Ubuntu


Is there anyway to make a bezier curve into a mesh object?


Is there a Bayesian interpretation of linear regression with simultaneous L1 and L2 regularization (aka elastic net)?


Android Socket not getting connection with java server

How to fix 'android.os.NetworkOnMainThreadException'?


What are the advantages to booking a hotel via an online travel agent, rather than directly?

What are the advantages of booking through a booking site instead of booking directly with the hotel?


How to generate all permutations of the flattened list of lists?

How to generate all permutations of a list?


how to fetch data from more than one table?

how to fetch data from two tables in mysql?


Procedural polka dot pattern with cycles


Reference 1-9 need to flush more left keeping other unchanged

Left-aligning LaTeX Bibliography Display


How come you can split non template classes in a .h interface and .cpp implementation?

Why can templates only be implemented in the header file?


Getting shared pointer of reference argument


If $n=\frac{a}{b}$ , with $n, a$ and $b$ integers $( b ≠ 0)$, and with $a$ and $b$ coprimes, does $b=1$?

Show that if $fd'=f'd $ and the pairs $f, d $ and $f',d' $ are coprime, then $f=f' $ and $d=d' $.


Page Not Found for anonymous (clear cache fixes it)

Cached "Page not found" for anonymous users


Every continuous function on Q can be extended to R continuously. ls it true or false?

Does every continuous map from $\mathbb{Q}$ to $\mathbb{Q}$ extends continuously as a map from $\mathbb{R}$ to $\mathbb{R}$?


Is it possible to retrieve posts depending on meta_key LIKE condition?

How do I query for posts by partial meta key?


javascript strange object reference behaviour


my reference doesn't start in order from [1] but it starts from [2]


Let $w\in\mathbb{C}$ be a primitive 10th root of unity. What is $[\mathbb{Q}(w):\mathbb{Q}]$?

$\mathbb{Q}(\zeta_{10}) $ degree of field extension over $\mathbb{Q}$


How can I make a plane's edges taper inwards?


Wrong reputation sum after user was deleted

Reputation tab shows wrong change if downvoted answers were removed


Insert the .tex file created through the knitter to main .tex file

Insert a TeX file created with knitr into a main TeX file


What is the difference between a witch and wizard?

Is there a gender-neutral term for witches and wizards?


Is there way to sync the shell yank buffer and the clipboard?

Share the clipboard between bash and X11


How can I automatically add some skeleton code when creating a new file with vim


running bash script in cygwin on windows 7

Are shell scripts sensitive to encoding and line endings?


Why should I study measure theory as a mathematician?

Motivation behind introduction of measure theory


Why is e used for polar form of complex numbers?

Why did Euler use e to represent complex numbers?


If the link has been posted (say as a related link), the possible duplicate comment doesn't appear

Auto comment "possible duplicate of ..." missing on voting to close as duplicate


$p$ a prime and $A=\{\frac{a}{b}\in\mathbb{Q}:p\text{ does not divide } b\}$ is a PID and decribe its units


System crash after donating through paypal


How do I move my My Documents, My Pictures, and My Videos to a different hard disk

Change Default directory of Documents and Settings?


Variable expansion succeeds with echo but fails without a command (execution by expansion)

Why doesn't the tilde (~) expand inside double quotes?


Add an image directly from the clipboard


Wrong vertical spacing in block title in beamer

Beamer itemize not aligned when in blocks


Fresh install of Ubuntu 18.04 on Acer M3985 Failed to open \EFI\BOOT\mmx64.efi

Can't install Ubuntu 18.10 on XPS 15 - EFI\BOOT\mmx64.efi not found


Format of "2016-10-22T16:27:54+0000" to convert to datetime

How do I parse an ISO 8601-formatted date?


My terminal dies when I use commands like dmesg, ls -la, history, sudo apt-get update

command 'll' crashes terminal after rellocating /home


Building an Internet Explorer Extension/Add-On?


Limit exists or not? $\lim \limits_{n \to\infty}\ \left[n-\frac{n}{e}\left(1+\frac{1}{n}\right)^n\right] $

How do I find this limit: $\lim_{n\to\infty} \left[ n-{n\over e}\left(1+{1\over n}\right)^n \right]$?


Mounting a Samsung NX -compatible lens to a different camera

Can I use lens brand X on interchangeable lens camera brand Y?


Java NullPointerException after reading from database

What is a NullPointerException, and how do I fix it?


How to check if a string is a valid integer?

What's the best way to check if a String represents an integer in Java?


ERROR: Error 1005: Can't create table (errno: 150)


Story about a Giant Creature landing on earth?


How do I scan for Wireless Access Points?


How do I transfer my Pokemon Go account to another device (Android to Android)?


How to evaluate $\lim_{n\to\infty}\frac{n!}{n^{1000}}$?

How to evaluate $\lim_{n\to\infty}n!/n^{k}$


App question timer shouldn't kick in until submission


How to track the total network data in a month

How can you monitor total internet data usage across reboots?


"0 bytes free" after partition resizing, but there is much unused space

ext4 partition size / free space discrepancies


What’s going on with “food > feed”? Is it like “foot > feet”?

Was "book" to "beek" as "foot" is to "feet"?


iMessage and FaceTime not working with Apple ID any more

Messages won't let me sign in to iMessage


Which is the correct sentence using the word 'Let'?


How to run bash script on ssh authentication failed?


How much should university ranking matter while choosing a place for graduate studies?

University rank/stature - How much does it affect one's career post-Ph.D?


IOS converting hours to seconds from a NSString


What does it mean when a counselor asks for a copy of a passport bio


Suppose $f_1 \in \Theta(g_1) \land f_2 \in \Theta(g_2)$. Prove $f_1 + f_2 \in \Theta(\max\{g_1, g_2\})$.


How to roll back Ubuntu to a previous version?


Bettery life issue with Ubuntu 14.04 LTS amd 64 bit

Tips to extend battery life for laptops and notebooks


Can gentle repose be used on a zombie to preserve it?

Does Gentle Repose work on a Circle of Spore Druid's Fungal Infestation Ability?


Show that infinitely many members of $1,11,111,1111,\dots$ are divisible by $2^{2017}+1$.

Prove that there are infinitely many integers of the form $111\ldots111$ that are multiple of $n$.


Need align and equation to center with respect to nested items


Trying to install node v6, but apt installs v8

Node Package Manager got corrupted in some way, now it cannot be installed


How can I display the full text of a query created by PDO?

Getting raw SQL query string from PDO prepared statements


line 7: [: missing `]' I have that error How do I fix it? I have indented

Brackets in if condition: why am I getting syntax errors without whitespace?


I have been awarded the Yearling badge 3 times in the last 2 days

What are the badges I can earn on each site, and what are the exact criteria for earning each badge?


Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException when adding ImageIcon to Jlabel array

What is a NullPointerException, and how do I fix it?


Why does oxforddictionaries.com not use a comma after the abbreviations 'i.e.' and 'e.g.'?

Should I always use a comma after "e.g." or "i.e."?


How do I take a screenshot from a YouTube video?

How can I take screenshots of YouTube videos in full screen?


Better formatting for description of tag badges

Missing font on some error and dupehammer info popups


An init-script does not get called on shutdown


SQL Server: having separate tables vs adding columns (db design)

How do you effectively model inheritance in a database?


Is flying 60 short flights per year harmful to health due to additional radiation?

To how much radiation are you exposed on a transcontinental flight?


How to benifit from CRTP in a real example?

Practical Uses for the "Curiously Recurring Template Pattern"


filling in the gaps of this proof involving the fundamental theorem of finitely generated abelian groups

Converse of Lagrange's theorem for abelian groups


How do I use method overriding in this case?


How do I find out what fonts are used in a document/picture?


How to deal with tantrums in an 8-year-old child?


How to retrieve a stolen Yahoo account's password?


Only two groups of order $10$: $C_{10}$ and $D_{10}$


How to recreate this wireframe looking effect


python multi list nested for loop convert to one function

Get the cartesian product of a series of lists?


Do hit points reset upon each use of wild shape even if the same form's assumed?

What happens to Temporary Hit Points when you Wild Shape?


How to find this integral $\int_{0}^{1}\ln\ln\bigl(1/x+\sqrt{(1/x^2)-1}\,\bigr)dx$

Closed form for $\int_0^1\log\log\left(\frac{1}{x}+\sqrt{\frac{1}{x^2}-1}\right)\mathrm dx$


MacBook says out of space but disk inventory and daisy disk show plenty of space please please help


Why is the electric field between two parallel plates uniform?

An uniformly charged infinite surface plane


Surviving nether world's Zombie pigmen in minecraft


how to load browser specific external css files?

How can I set CSS only for specific IE browsers?


What is the reasoning behind Gollum not harming the Hobbits in their sleep?


Difference between calculator and google calc for power

What is the order when doing $x^{y^z}$ and why?


How do I roll back to a previous installation of WINE without knowing what that version was?

How do I show apt-get package management history via command line?


Confidence interval for Bernoulli sampling


Graduated symbology shows borders between matching categories


Energy propagation through stationary points of a standing wave

How does the energy in a standing wave travel beyond a node?


QGIS Composer - Inserting OS Grid Reference

Ordnance Survey grid reference in QGIS print composer


How to perform a spatio-temporal query in attribute table?

Getting tabular statistics from table using QGIS?


Why doesn't 32-bit Eclipse run in 64-bit Ubuntu?

Can't run "dpkg --add-architecture i386" on 12.04 64-bit to run eclipse ADT


A question in Number Theory - prove there exist m>2010 s.t f(m) is not prime

Prove there exists $m > 2010$ such that $f(m)$ is not prime


Custom validation error template not respecting ZIndex

WPF - How can I place a usercontrol over an AdornedElementPlaceholder?


Filipino Citizen with Europe visa holder

Long lay over in Seoul. Do I need a visa as a Filipino citizen?


Java, How do I get current index/key in "for each" loop

Is there a way to access an iteration-counter in Java's for-each loop?


Why are arrays covariant but generics are invariant?

Why Is Subtracting These Two Times (in 1927) Giving A Strange Result?


How to authenticate mongo db using java driver


What is a NullPointerException, and how do I fix it?


IEqualityComparer'1 for lambda expressions without visiting the expression

Most efficient way to test equality of lambda expressions


See who is upvoting/ downvoting my question/answer

Is there a way to see who voted on your posts?


How do I find the exact meeting point of 2 lines?

How can I add vertices to intersection of two edges?


Why does the humidifier "really" make a stove's flame orange?

Why does the humidifier make a stove's flame orange?


Determining the RGB Definitions of Modified Colors in LaTeX

Convert arithmetic rgb value to 8bit RGB value


What word describes random unfitting accusations

Word for dismissing someone's opinions as racist, liberal, etc, instead of debating back


Android ADT ( 4.3) XML EDitor : Errror parsing XML: not well-formed ( invalid token)

error: Error parsing XML: not well-formed (invalid token) ...?


Maximum likelihood estimator for multivariate normal distribution

Need help to understand Maximum Likelihood Estimation for multivariate normal distribution?


Can anyone tell me the difference between function defined in function and adding function using prototype

Use of 'prototype' vs. 'this' in JavaScript?


Ubuntu 16.04: appstreamcli error while get-update

E: Problem executing scripts APT Update::Post-Invoke-Success error during apt-get update


Is this true: any bipartite graph with unbalanced vertex parity is not Hamiltonian?


Transit visa for France while traveling to Fiji?

Do I need an airport transit visa through Switzerland (Schengen) if I have no Schengen visa?


How to apply a texture to only one side of a plane


How to show that ${m \choose n} + {m \choose n-1} = {m+1 \choose n}$?

Proving $\binom{m}{n} + \binom{m}{n-1} = \binom{m+1}{n}$ algebraically


How Networking works on sheer p2p connections

Do all P2P connections need a server to connect them to each other?


How to quote a book that has a quote in the text that I'm quoting?


what is the best email type to request for Phd position

How should I phrase an important question that I need to ask a professor?


Which algorithm is used by Google Maps to estimate travel time?

How do map applications calculate travel times?


How long can I store a food in the pantry, refrigerator, or freezer?


$\operatorname{tr}(A)=\operatorname{tr}(A^{2})= \ldots = \operatorname{tr}(A^{n})=0$ implies $A$ is nilpotent


Argue that the impromper integral $\int_1^\infty \frac{1-e^{-2x^2}}{x^2}$ for $x \neq 0$ is convergent

Argue that there exists a continuous function $g: \mathbb{R} \rightarrow \mathbb{R}$ which satisfies $g(x) = \frac{1-e^{-2x^2}}{x^2}$ for $x \neq 0$


17.10: How to auto mount drives on startup?


Why in this code the output of the virtual functions is like this?

C# - Keyword usage virtual+override vs. new


why is beveling working differently on these objects?


Making backup with Git in android studio

Git for beginners: The definitive practical guide


joomla 2.5 in module install.mysql.utf8.sql dosent work


How to switch user or lock PC via keyboard shortcut manjaro XFCE


How do I make a fixed size formatted string in python?


$x \rightarrow |x|^p$ is strictly convex


How do comparison operators  work with a function as an operand?


Position cameras on all vertices with respect to center view

Script to render one object from different angles


where symbols there are and what they are saying?

What do the symbols in service --status-all mean?


How to combine arithmetic expansion and brace expansion?

In bash, is it possible to use an integer variable in a brace expansion


Event binding on dynamically created elements?


$6 \Bbb Z + 5$ contains infinitely many primes

How do you prove that there are infinitely many primes of the form $5 + 6n$?


Biometrika latex template reports error when using theorem-like environments

Biometrika journal style file not getting along with TeXLive-2020


How to connect Nokia Lumia 730 to Ubuntu 15.04?

How to connect a Nokia Lumia 730 to Ubuntu 14.04?


What does a leading "\??\" on a windows path mean?


Unmet dependencies. Try 'apt --fix-broken install' with no packages

dpkg error: "trying to overwrite file, which is also in..."


do-release-upgrade failed when migrating Ubuntu 14.04 -> 16.04

How to install software or upgrade from an old unsupported release?


Uninstall, Activate, Deactivate a plugin: typical features & how-to


How, using jQuery, might I obtain the src attribute of a HTML img element?


Is a passport needed for traveling by plane in Mexico? (Non-international flight)

What documentation does a Mexican citizen need to fly domestically within Mexico?


Restore feature in In-App Purchase in iphone/ipad application

Restore button for iOS non-consumable in-app purchase


Composition of analytic functions is analytic

Proof composition of analytic functions is analytic


How do I find out what fonts are used in a document/picture?


How to get the previous month date in asp.net


How do I solve the inverse sin without a inverse sin button with the equation $x = \sin^{-1}(0.5)$?

How to calculate $\theta = \arcsin\left(\frac{1}{2}\right)$ with given four function calculator?


Plot x y data from different files/tables

Plots with data coming from different files


When resetting tablet, Google password won't authenticate

How to bypass "Verify your account" (Factory Reset Protection)


Prove that $\gcd(2^{2^m}+1,2^{2^n}+1)=1$ if $m,n$ are positive integers.


SQL: Repeat a result row multiple times, and number the rows


What is the proper way to write the plural of a single letter? Or a word used as a word ('mention' usage)? (another apostrophe question)


Layover at Narita, Japan. Do I need a transit visa?


Raw sausage left at doorstep for 4 hours

How do I know if food left at room temperature is still safe to eat?


May I get a refund for a flight cancelled because of COVID-19?

Am I entitled to air passengers compensation if my flight was cancelled and I did not get a re-route?


How do I make defuse kits purchasable without making it competitive?

What command can I use to stop receiving a defuse kit every round in casual?


Is there a vector space with a non-trivial zero vector?


How to bind click event to button from ajax result

Event binding on dynamically created elements?


How do I set focus so I get a blurred background?

How can I get dramatic shallow DOF with a kit lens?


E: Type '“ndeb' is not known on line 7 in source list /etc/apt/sources.list

How do I fix this "E: Type '*' is not known on line * in source list ..." update error?


Rain arrows in random positions within bounds?

Is it possible to spawn mobs in random places?


Using same Google Adsense units for web and mobile versions

What is the right approach to use AdSense with responsive web design?


Why it is "Okun's Law" and "Philips Curve" rather than "Okun Law" and "Philips' Curve"?

Bayes' Theorem or Bayes's Theorem? (Similarly, Charles' Law or Charles's Law?)


Anova when dependent variable is continuous


Error: Aggregate Relationship is used in an unsupported complex expression containing 'SBQQ__Opportunity__r.opportunitylineitems

Pull OpportunityContactRole value into VisualForce Template related to an Invoice


line of red zeros in file /var/log/syslog


Is the brass brazier required for the Find Familiar spell, or can it be replaced by a spellcasting focus/component pouch?

What are the details surrounding the brass brazier required for the Find Familiar spell?


Is 172.20.0.2/24 an ip address or subnet?

Difference between ip addr and ifconfig?


"Unable to connect to Upstart" error when installing git-all


I have to show whether the groups $(\mathbb{C}, +, 0)$ and $(\mathbb{C} − \{0\}, \times, 1)$ are isomorphic.

To prove that $(F,+)$ and $(F-\{0\},\cdot)$ are not isomorphic as groups.


Why should one favor composition over inheritance? When should I choose to use composition rather than inheritance?


Meaning of \d{1-3 }in regular expression


Netgear WNDR3700 WiFi-n not giving 40 MBps

Wifi is slower than Ethernet cable connection?


Is it the same time, does time pass at the same pace everywhere in the universe?

Doesn't dating the universe violate the concept of spacetime's inseparability?


Algebraic Proof that $\sum\limits_{i=0}^n \binom{n}{i}=2^n$


The area of four circles at the origin intersecting


How can I specify the home directory in Ubuntu, like I can specify %APPDATA% in Windows?

How can I specify the default save directory for gnome-screenshot?


Shell scripting to print multiples of 5 including 1 and 100

How to do integer & float calculations, in bash or other languages/frameworks?


Prove that $\frac{1}{n+1} + \frac{1}{n+2} + \frac{1}{n+3} \ldots + \frac{1}{2n} > \frac{13}{24}$ for every integer $n>1$

Proving $\frac{1}{n+1} + \frac{1}{n+2}+\cdots+\frac{1}{2n} > \frac{13}{24}$ for $n>1,n\in\Bbb N$ by Induction


java.lang.NullPointerException Error in my chat application

What is a NullPointerException, and how do I fix it?


Which is stronger: Incursio or Grand Chariot?

Was Incursio really weaker than Grand Chariot, or was Wave just delusional?


How to generate apart or non-intersecting spheres in cube?

Randomly packing spheres of fixed radius within a cube


How do I insert yesterdays date instead of today?


Is $R=K[\![x^3,x^2y,xy^2,y^3]\!]$ a Gorenstein ring?

Is $R=K[|x^3,x^2y,xy^2,y^3|]$ a Gorenstein or a regular ring?


How to know if output is being redirected to a file?

ls command operating differently depending on recipient


How to extract data from a contour plot to a text file?


What keeps a bike from falling while in motion?

Why doesn't a bike/bicycle fall if going with a high speed?


Tag scores on user profile are not updated again - worth bringing up on meta?

Tag info not updated regularly on profile?


Which programs can I use to edit PDF files?


Is there a finite number of colors in the visible spectrum?

Is there an infinite amount of wavelengths of light? Is the EM spectrum continuous?


How can I target both :-webkit-full-screen and :moz-full-screen at the same time?

Is it possible to write one CSS rule for several prefixed selectors?


How can I list the X and Y values on the outside of a 6x6 matrix, as well as list the axis names outside of them? (see image)


How to prove snake lemma in abelian categories without invoking Mitchell's embedding theorem?

Proving the snake lemma without a diagram chase


How to derive the formula for $\arctan(x) + \arctan(y)$ depending on $x,y$?


Java - private static field assigned from a non static variable

Is Java "pass-by-reference" or "pass-by-value"?


Does it make sense to speak of probability of a hidden outcome? (context: confidence intervals)

Why does a 95% Confidence Interval (CI) not imply a 95% chance of containing the mean?


Lapply to Add Columns to Each Dataframe in a List

Adding a new column to each element in a list of tables or data frames


C# Defining List type once before multiple use


How can you use one object to delete the same 3d space on another object?


Excel,word,pdf files got encrypted by ransomware


My servlet returns a blank page and does not fetch data from database


Combining multiple commits before pushing in Git

Squash my last X commits together using Git


Shell How install local bulk of packages

How to install .debs in a folder using a single command?


Merging CSV (single line per row) files without losing the header line


Can I install any iOS version I wish by picking and choosing which firmware to restore?


Getting NullPointerException in SharedPreferences

What is a NullPointerException, and how do I fix it?


"No space left on device" when installing packages, yet I have space left

How do I resolve unmet dependencies after adding a PPA?


Sorting non English names in Javascripts

How to compare Unicode strings in Javascript?


MySQL - Does making a decimal field's default NULL save space?


Refresh output line containing download percentage

Python to print out status bar and percentage


Speed comparison between i = i + 1 and ++i

Is there a performance difference between i++ and ++i in C++?


How to check if FileTable is enabled in SQL Server database


Why cant I 'sudo apt-get install nfs-common'?

How to install software or upgrade from an old unsupported release?


Why are there $3$ solutions to $x^a = a^x$?

What is the solution set for the equation$ x ^ y = y ^ x$ in positive real numbers, x not equal to y?


For all $1 \leq i < j \leq k$, the subtrees $T_i$ and $T_j$ have a vertex in common. Show that $T$ has a vertex which is in all of the $T_i$.


If opposite angles in a quadrilateral add up to π, do its four vertices all lie on the same circle

Prove the opposite angles of a quadrilateral are supplementary implies it is cyclic.


Related Rate Question: Two sides of a triangle are 6 m and 8 m in length and the angle between them is increasing at a rate of 0.06 rad/s

Related rates: Find dA/dt of triangle, given d(theta)/dt -- Can't come to textbook answer


do I need to send my online access information if someone is depositing money into my account is this a scam?

Is it a scam if the person only wants to deposit into my account, not make a withdrawal?


Null Pointer Exception Error in arrayList add declare

What is a NullPointerException, and how do I fix it?


Capacity of pen drive shown is less than the actual


A question concerning a generalization of HypergeometricPFQ

What kind of hypergeometric function is it?


Why are backslashes displayed as "₩" (Korean won sign, “W”+strikethrough) in Notepad++?

Why a backslash displays as "W"+strikethrough in Netbeans?


I tend to overuse the hyphen as a pause, and would appreciate some feedback on this

Is an ellipsis interchangeable with an em dash?


How I can get through this errors in c++ simple program with json

What is an undefined reference/unresolved external symbol error and how do I fix it?


LyX 2.1 Report Class Changing Part to Other Text When Using non-TeX fonts (via XeTeX/LuaTeX)


Make C# user.config not version dependent

Can I control the location of .NET user settings to avoid losing settings on application upgrade?


How to make grass respond to an object hitting them


Am I hacked? Or what happened with my reputation?

What is the association bonus, and how does it work?


Find Familiar and visual components to spells

Can a wizard use his familiar's senses to enlarge his "you can see" area?


Half the time my computer won't wake up from suspend


In arcgis10.2, can I access arcobjects using python?


C++: Best way to get Window Handle of the only window from a process by process id, process handle and title name

How to get main window handle from process id?


Sub-Protected Method in java. (Can't think of a better way to phrase this)

how to restrict protected method access to only subclasses


How to select elements in the intersection of two lists in Python


jquery : not able to select table elements which are created dynamically by jquery

How do I attach events to dynamic HTML elements with jQuery?


How can I move windows between desktops with the keyboard?

Are there any keyboard shortcuts for Windows 10 developer preview's virtual desktops ("Task View")?


How to Stop World Properties from Affecting Scene

Making an Emission shader emit a different colour of light than the colour assigned to the object?


Inverse search in Sumatra PDF opens new instance of TeXnicCenter

The SumatraPDF Inverse-Search for any arbitrary Editor


Assigning values to field based on values in other field using Python Parser of ArcGIS Field Calculator?

Splitting field in ArcGIS field calculator using Python Parser?


What is the relation between terminal potential difference and e.m.f?

What is the difference between EMF of a battery, its potential difference and the current supplied by the battery?


Where does this asymptote for $H_n^{(k)}$ come from?

Inequalities to give bounds on generalised harmonic numbers?


com.termux linked or mounted on SD (Root Available)

Can I mount /data/data/(app_name)/ on external sd card?


How to dynamically change the variables of a view?

Change the pager and the number of elements per page of a specific view


Text color changes height of tabular row

Why does adding color to a table row increase the height?


Why does jQuery or a DOM method such as getElementById not find the element?


When using multiple monitors in Kubuntu, can I make it more difficult for the mouse to cross screen boundries?

What is the function of the "Sticky edges" on/off setting in displays?