confusion in the sentence use of have and has in plural and singular case

Agreement With Compound Subjects Joined by And


How can I replace Bfont with another font upon startup


Analytical solution to marginal likelihood/normalizing constant

How to compute the marginal likelihood given two multivariate Normal distribution?


How to figure out if two matrices are similar matrices!!!


Set projection/CRS in map and shapefile to produce buffer


how can I use the shutdown command to hibernate the computer in X hours?

Hibernate computer with a timeout from command line on Windows 7


How to set application in port mode only?

How can I disable landscape mode in Android?


How to get an alert when new questions are posted on Stack Overflow?


Dense subset has at most one point on each horizontal/vertical line

Boundary Question in $\mathbb{R}^{2}$ (Manifolds)


I hope I don't regret this vs I hope I won't regret this


Tooltips on the badges page need checking


/var/log/syslog owned by syslog:adm and permission denied with truncating it

How to solve "permission denied" when using sudo with redirection in Bash?


Which is correct "women's clothing" or "womens clothing"?

Is it correct to say "I write children books" (not possessive case)?


What do you call a person who is polite but deceiving?

Is there a rhetorical term for remarks like "you're exactly what I've come to expect from..."?


Is it possible to store class data into an array in Python, then randomly pick a class from the array?

How to randomly select an item from a list?


if A is compact and B is closed, there exist $u$ in $A$ and $v$ in $B$ such that $\|u-v\|=\inf\{\|a-b\|\mid a\text{ in }A\text{ and }b\text{ in }B\}$

Distance between sets with one closed set and one compact set


When do we use ' before a value in Lisp?


"Unable to locate package" while trying to install packages with APT


Why has stackexchange.com a different top bar

Why is the top bar not changed on Stack Exchange, Area 51 and Ask Ubuntu?


How to remove n number of lines from a file using sed command?

Remove line containing certain string and the following line


GPU Intel&AMD in device manager but only Intel in dxdiag


Probability that $AX^2+BX+C=0$ has only real roots for $A,B,C \sim Unif(0,1)$

Probability that a quadratic polynomial with random coefficients has real roots


He had 4 sons. What is the meaning of this sentence?

Does "She had a brother" mean that her brother is dead?


Prove that $R$ is a commutative ring if $x^3=x$


Dear Stack Exchange, it is time for a change

Is it time for Stack Exchange, Inc and the community to legally separate amicably?


Why are the upvote and downvote buttons visible on a user's own post?

Remove vote UI elements beside own question and answer posts


Null Pointer Exception thrown when drawing an image

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


jQuery click function doesn't work after ajax call?

Event binding on dynamically created elements?


Finding Linear Transformation Matrix $\mathbb{R}^2 \rightarrow\mathbb{R}^2$ and $\mathbb{R}^3 \rightarrow\mathbb{R}^2$

Finding an unknown linear transformation given that $T(1,1)=(1,0,2)$ and $T(2,3) = (1,-1,4)$


Can the Surface Area of a Sphere be found without using Integration?


Legality of physically publishing Stack Exchange content verbatim

Are these eBooks that copy from SE illegal?


Attempt to invoke virtual method 'int com.android.server.AlarmManagerService$Batch.size()' on a null object reference


LDAP OperationNotSupportedException : error code 53 - WILL_NOT_PERFORM

How do I resolve "WILL_NOT_PERFORM" MS AD reply when trying to change password in scala w/ the unboundid LDAP SDK?


How to Measure the exact execution time of method in java?

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


How to sort the string in a list in descending and extract largest string number from it

Sort ArrayList of custom Objects by property


Why didn't someone recast the Fidelius Charm on Grimmauld Place?


Proof that there are infinitely many prime numbers starting with a given digit string


INMO : Prove that $\sqrt[3]{a}$ and $\sqrt[3] {b}$ themselves are rational numbers

If $\sqrt[3]{a} + \sqrt[3]{b}$ is rational then prove $\sqrt[3]{a}$ and $\sqrt[3]{b}$ are rational


If $(a_n)$ is positive and $\sum\limits_n \frac{a_n}{1+a_n}$ converges then $\sum\limits_n a_n$ converges

Positive series problem: $\sum\limits_{n\geq1}a_n=+\infty$ implies $\sum_{n\geq1}\frac{a_n}{1+a_n}=+\infty$


Detect if object has overriden toString()

Java: How to find if a method is overridden from base class?


How can I pairwise sum two equal-length tuples

Python element-wise tuple operations like sum


Find all integers $x$ and $y$ such that $4y^2=x^7+1$

Prove $x^3 + 3 =4y(y+1)$ has no integer solutions


What happens if your only pawn can't move as many spaces as required?

In Sorry!, do you have to move past safety zone or forfeit turn?


Attempt to invoke virtual method 'java.io.FileOutputStream android.content.Context.openFileOutput(java.lang.String, int)' on a null object reference

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


Where can I ask for help finding a resource I've seen before but can't remember where?

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


How does digital ISO work electronically? One amplifier or many?

How is ISO implemented in digital cameras?


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


How to choose between two options with a biased coin

Puzzle about technique of fair using of unfair coin


How to hard code value to property variable when instance of class is created?

Why does Property Set throw StackOverflow exception?


Is top x% this week for a single community or all Stack Exchange communities?

Top 7% this quarter -> where to find all the stats?


How to compare today date with another date in javascript?


How do I disable pasting when clicking the middle mouse button/wheel?

How do I disable middle mouse button click paste?


How to give hover effect in inline html?


Where can I find books about how to use Mathematica solving practical problems?

Where can I find examples of good Mathematica programming practice?


Chrome: middle mouse button overriden on certain web pages?

Middle clicking a link on chrome sometimes also switches the current tab to the new one


Passing an array as a function parameter in JavaScript


Jquery - change event firing on page load


Word for a desire that you can not do anything about

Word for something difficult or nearly impossible to achieve


Can't start Ubuntu after interrupted upgrade


How do I bake my final Cycles render into a texture?

How do I bake a texture using Cycles bake


Does there exist a function $f(x)$ such that $f'(x)$ exists for all $x \in A$ but $f'(x)$ is not continuous on $A$?


convert javascript number to css value -- maximum number of trailing decimals

`toFixed()` is not working properly for some numbers


2 hundred sixty thousand VS 2 hundred sixty thousands

Correct plural usage for "hundreds" and "thousands"


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


Why does the connection time out when connecting to a server?


Create a workspace to work with PDF (C#)


Is the timing of badge awards documented?

How long does it take for badges to be awarded? How are they generated?


invalid use of class::constroctor not sure what the problem is. However when using set method there's no problem

What are the rules for calling the base class constructor?


Is it "at" or "in" or "on" stack exchange?

I found out about this site on Facebook... or "at Facebook"?


Google Satellite imagery gone wild with QGIS 2.18

Scale-dependent displaying of a layer using OpenLayers plugin?


What's the upper bound connections of TServerSocket in Delphi?

What is the upper limit on the number of open sockets I can have in Windows Server 2003


How to bind arguments to given values in Python functions?


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


How can I assign the output of a command to a shell variable?


How to print original variable's name in Python after it was returned from a function?


Preview + tikz extraction no longer working (TL 2014)

Why this error in the TikZ and preview package?


evaluating Polar Integrals. Cartesian to Polar?

Transform to polar the following integral $\int_0^6\int_0^y x \, dx \, dy$


What happens if I "sleep" windows 10 while programs are running?

What does Windows 10 write to my drive before going to sleep?


Unresolved external symbol when use boost TLS

Undefined reference to static class member


ERROR 1093 (HY000): You can't specify target table 'employee_salary' for update in FROM clause

MySQL Error 1093 - Can't specify target table for update in FROM clause


construct irreducible polynomials of degree 32 over $Z_2[x]$

Algorithm to find the irreducible polynomial


Can you add extension methods that you call like static methods?

Can I add extension methods to an existing static class?


Sql Query to get single values from group of values seperated by comma

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


The surest way to gain lots of reputation on Stack Overflow- ask questions

Should the weight of question upvotes be reduced?


Has Salesforce stopped cleaning up old debug logs?

Maximum log level exceeded in Developer Console


Are there any JSF component libraries that generate semantic and cross-browser html markup?

Is it possible to use JSF to build clean CSS layouts without using tables?


Is there a way to revert /bin default owner(s)?

Set myself as owner of /etc with chown command now getting all kinds of errors


Number of Sequences with Pairwise Even Sums


Understanding SUSY, Lie groups, gauge theory, etc

Comprehensive book on group theory for physicists?


Eclipse import shortcut does not work as expected

Eclipse Optimize Imports to Include Static Imports


fopen file with "special" characters in filename

Is there a standard way to do an fopen with a unicode string file path?


Does anyone know of any alternatives to recuva for file recovery?


Number of solutions to the equation $ x_{1} + ... + x_{k} = 100$ as a function of k?

How to use stars and bars for solving number of integral solutions to an equality?


Extra inter-line spacing in a tabular environment


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


What GUI applications are there to assist in generating graphics for TeX?


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


How can the nucleus of an atom be in an excited state?


Can't compile chemschemex and biblatex in document

biblatex and autonum don't work together


Finding the MGF of a bivariate Normal Distribution

linear combination and univariate normal


eventListener added to element before adding element to DOM. Does not apply

Event binding on dynamically created elements?


Multiply arrays to make matrix gives unexpected result

List of lists changes reflected across sublists unexpectedly


PHP array from cookie info: only shows up after you refresh the page?


Prove $\int_{0}^{x}f+\int_{0}^{f(x)}f^{-1}=xf(x)\qquad\text{for all $x\geq0$}$

The sum of integrals of a function and its inverse: $\int_{0}^{a}f+\int_{0}^{f(a)}f^{-1}=af(a)$


Selenium is not interpreting attribute value correctly


What did Freeman Dyson mean when he said this?


Passed Object as Argument not Being Updated

Why use the 'ref' keyword when passing an object?


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


What is the difference between "tall and high?"


Python3: How to make dictionary from list using 'dict' and 'zip'?

How do I convert two lists into a dictionary?


How do I recover my accidentally lost Windows partitions after installing Ubuntu?


Building A Computer Specifically for Graphic Design, 2K Budget

What computer hardware matters to a graphic designer?


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

Existence of a group isomorphism between $(\mathbb K,+)$ and $(\mathbb K^\times,\cdot)$


what is the good function php to deal with ffmpeg and progress bar

ffmpeg Progress Bar - Encoding Percentage in PHP


Schengen Visa require 2 blank pages. 2 both side blank pages? or one side blank


How does Dirichlet regularization of $1 + 2 + 3 + ...$ work?


Why is there a discrepancy in disk usage reported by df and du?


Why does "moot" have two nearly opposite meanings


Finding out what OS is being run through a program

How can I find which operating system my Ruby program is running on?


Using sets of class objects without resorting to raw types


Why does parseInt yield NaN with Array#map?


Why doesn't the owning group get the executable bit?

facl ignoring the "x" permission but only on files


Vertically center children in parent that takes up the full screen

How can I vertically center a "div" element for all browsers using CSS?


Unable to dock TeamViewer in Ubuntu 18.04

Cannot add custom launcher to Ubuntu Dock ('Add to Favorites' option does not show up)


Is the volatile keyword required to guarantee changes to an object reference are eventually observed by other threads?

When should the volatile keyword be used in C#?


Is there a way to make hand painted designs glow?

How can I make a part of a texture glow?


Determine size of dynamically allocated memory in C


Can't figure out what is causing the dereference null object error?

System.NullPointerException: Attempt to de-reference a null object


Template isn't numbering sections by default

titlesec: loss of section numbering with the new update (2016/03/15)


What is a good replacement for "ununderstandable"?


How do I partially break a clipping mask border?


Two files with same coordinate systems should overlap but don't

Layers with same coordinate system should align/overlap in ArcMap but do not?


how to change the distance between tick mark and tick label


Finding some points with which one can calculate the integral of multiplication of two functions

Riemann and Darboux Integral of a product of two functions


How to create a matrix with 20 columns in latex


Show a C-infinity function is a polynomial

Baire: Show that $f\colon \mathbb{R}\to\mathbb{R}$ is a polynomial in an open bounded set


"A total of 0.0606 moles of NaOH was" or "were"?


Is it proper to describe a noun using an apostrophe?

Using contracted forms ("don't", "let's") in a formal text


How can I implement an ip whitelist to protect my server?


2000s (or earlier) book/series set in a future where spacefaring people have magic powers granted by elemental symbiotic crystals

Book where wizards learn magic by bonding with crystals that imbue them with powers


Module over integral domain, "Rank-nullity theorem", Exact Sequence


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


Why does the 802.11b DSSS signal have 22 MHz of channel width? How does the information get spread over that width?

Why is channel capacity a factor of bandwidth instead of frequency?


Specifying non-conflicting PlotTheme options


A question about conditional replacement

Evaluating an If condition to yield True/False


Is $\lvert a-b\rvert\le\lvert a\rvert+\lvert b\rvert$ always true?


how to eleminate duplicate records in mysql


Convert factor to integer in a data frame


How to detect if a function is called as constructor?


How to add \= ("macron", "overbar") in an equation?

Trying to use "\~" to generate tilde symbol in math mode


How does the Earth have enough gravity to hold on to its atmosphere?


Posting frequencies of the contents of a dictionary in descending order (Python)

How do I sort a list of dictionaries by a value of the dictionary?


How to include and use new fonts in iPhone SDK?


What is the reason for performing a double fork when creating a daemon?


How to install Windows 7 to an USB HDD from Linux?

Can I install Windows OS (Windows 7) on a removable USB hard drive?


Python - Setting Values within an Array of Array

List of lists changes reflected across sublists unexpectedly


How to fasten armored cable to joist in tight space

Do new wire runs in an existing ceiling need to be stapled down?


Eeeeek - what happened to my @ salutation?


Blender rendering video sequence instead of scene


Hat shown in Stack Overflow, Meta Stack Overflow, WordPress Answers but not shown in Drupal Answers?

Am I eligible for hats if I join a Stack Exchange site after the start of Winter-Bash?


Short story about human life on Venus; girl locked in cupboard during seven-yearly hour of sunlight

Short story that takes place off planet, involving sun and rain


Install Incrontab (file system watcher) on Ubuntu 18.04.1 LTS

How do I enable the "Universe" repository?


Need to download package and all dependancies for armhf debian

Ways to update Ubuntu (debian-based distros) offline


Need help calculating population total and average using a bash awk script

Calculating the average area of the states listed in states.txt


how does a car move? and how do the brakes affect its velocity?


Pumping (going faster and faster) on a swing

Can you get a playground to swing from stationary


How to check if a string contains a substring in Bash


Calling generic method with Type variable

How do I use reflection to call a generic method?


Why do I get a segmentation fault when writing to a "char *s" initialized with a string literal, but not "char s[]"?


Google "answering" my search with link to SE, but not showing the top answer(s)


How can I statistically compare two time-series?


How to vertically align an image inside a div


Name separators, if condition for same command

Separators for author group (IF conditon)


"edit tags" button does not disappear as normal

"edit tags" always visible, not just when hovering the tags area


Ubuntu 14.10 Unity themes? Are there any?


Database structure for modelling one-way follower system like Twitter


Can not boot into windows 8 after cloning HDD to SSD


How to complete ESTA application when "THE PAYMENT STATUS COULD NOT BE DETERMINED AT THIS TIME"?


What's the difference between including files with JSP include directive, JSP include action and using JSP Tag Files?


Removing a polygon-defined area from a multiband raster: A landscape classification inquiry

Deleting polygon defined area from raster layer in ArcGIS Desktop?


Where do I ask a question about the best way to develop or code something?

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


Many-worlds interpretation (MWI) and conservation of energy

Many-worlds: Where does the energy come from?


Number Solving Game not Updating Random number upper and lower bounds...Java


How to remove accounts from “Choose an account” list in Google WITHOUT signing in?

How to remove accounts from "Choose an account" list in Google sign in?


TextBox_append_text_with_encoding() takes exactly 3 arguments (4 given)


How get the best threshold value by ROC curve

How to determine best cutoff point and its confidence interval using ROC curve in R?


ID's for Jquery dynamically added contents are not being recognized

Event binding on dynamically created elements?


Eeeek! what is happening to my profile image in chat


Include SSCCE.ORG contents in an instruction page somewhere

Improving "demonstrate a minimal understanding" close reason


Why FoldList 5 times faster than Apply for matrix multiplication?

Why is calling Dot with many arguments so inefficient?


Retrieving a specific element in my javascript array

Find object by id in an array of JavaScript objects


How good are journal papers which ask you to pay x00$ to get published

How do you judge the quality of a journal?


Limit of $\frac{1}{x^2}-\frac{1}{\sin^2(x)}$ as $x$ approaches $0$

Find the limit without use of L'Hôpital or Taylor series: $\lim \limits_{x\rightarrow 0} \left(\frac{1}{x^2}-\frac{1}{\sin^2 x}\right)$


Graphics issues after/while installing Ubuntu 16.04/16.10 with NVIDIA graphics


Setting ImageIcon for Java application in Netbeans returns NullPointerException

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


Number of Subgroups for rational numbers $\mathbb{Q}$ of finite index

Subgroup of $\mathbb{Q}$ with finite index


How to delete files/folder from ubuntu one cloud


How can I say that all quantities need to be positive (and real)?

How to specify assumptions before evaluation?


JavaScript Promises: Failure to understand when Resolve is in scope

What is the scope of variables in JavaScript?


Can we have more than one @Path annotation for same REST method


I was recording by hypercam when my computer closed, I dont know how to play this UNDF file


Is there a GCD-Like approach of Multithreading in QT?

How to execute a functor or a lambda in a given thread in Qt, GCD-style?


Lens cleaning pen - disappointed by results, is this working right?


Difference between $() and $(document).ready()

Differences between document.ready and $function


What is the purpose of the emitter resistor in a common emitter amplifier?


Libgdx GestureListener to Handle Hold TouchDown


QGIS convert long integers stored as string to integer

Convert String to Integer in QGIS tables


Login screen doesn't look right on Ubuntu 18.04.2 LTS

Login screen appears in a much older style


Do double slit experiment with big balls

What would diffraction of a macroscopic object look like?


What is the rate of deterioration of lycopene in an open can of tomatoes?

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


Option to flag/tag/bookmark a certain question/answer so that any edits/answers/comments show up in my Global Inbox

The Follow Questions and Answers feature is now live across the Network


Read / write to the same file descriptor with shell redirection

Redirect STDERR and STDOUT to different variables without temporary files


Does $G\!-\!v_1 \simeq G\!-\!v_2$ mean an automorphism of $G$ maps $v_1$ to $v_2$?

Find a graph on eight vertices with a pair of pseudosimilar vertices


How does pca() function in Matlab fix the sign of principal components?

Does the sign of scores or of loadings in PCA or FA have a meaning? May I reverse the sign?


Java, MySQL: myStatement.executeUpdate INSERT INTO gives NullPointerException

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


How to indicate the tip to cleaners in hotels and motels

How to tip housekeeping in hotels if leaving tips daily?


Show $\int _ { 0 } ^ { \infty } \frac { x \sin x } { \left( x ^ { 2 } + 1 \right) ^ { 2 } } dx = \frac { \pi } { 4 e }$ with residue theorem

Calculating the integral $\int_{-\infty}^{\infty} x\sin(x)/(x^2+1)^2 dx$


Extract maximum values for each objects from a file

find the min and max value in two columns


How to find if the file exist or not in Android?


Logistic regression normality and homoscedasticity

Heteroskedasticity in logistic regression


When quoting a quote, does the period go at the end?

When should end punctuation go inside quotes?


python recursive class inclusion & instantiation


How do I install a .tar.gz (or .tar.bz2) file?


$x^6+x+a=0$ has a zero or two distinct solutions in $\mathbb{F}_{2^m}$

Number of solns of $x^6+x=a$ in $\mathbb{F}_{2^m}$, where $m\geq 3$ is odd is same as number of solns of $x^2+ax+1=0$


PCB design - Ground fill on every layer?


The numbers $1,\frac{1}{2},\frac{1}{3},\dots,\frac{1}{100}$ are written on a white board


What do we mean by a ring and what is ringlike about it?


Will asking a really good question get you more chances to ask more questions?

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


Is there a secure cryptosystem that can be performed mentally?


How to get first/shorter match with regex in ruby?

My regex is matching too much. How do I make it stop?


Is there a formal term for the algebraic structure equivalent to Thurston's hemigroup without identity?

Is there a more common term for "hemigroup"?


trying to delete a file called search protect

How can I remove malicious spyware, malware, adware, viruses, trojans or rootkits from my PC?


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


Ubuntu boot process hangs on starting snappy daemon

Long boot delay on Ubuntu loading/splash screen following regular dist-upgrade on clean SSD install (18.04)


Determine minimal polynomial for given matrix.

Determining possible minimal polynomials for a rank one linear operator


How can you say String is immutable since you can change it?


How to remove certain values from an array object in JavaScript

How do I remove a property from a JavaScript object?


Prove the following $A \setminus (B\setminus C) = (A\setminus B)\cap (A \cup C)$

Show that $A \setminus ( B \setminus C ) \equiv ( A \setminus B) \cup ( A \cap C )$


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


Navigating node of one specific RSS Feed

Using Xpath With Default Namespace in C#


Is there a += available for attr() and val()?

Is it possible to do ".value +=" in JQuery?


How does the term $|\psi\rangle\langle\psi|$ come from while calculating the expectation value?

Where does the term $|\psi\rangle\langle\psi|$ come from while calculating the expectation value?


Correct grammatical errors after getting PhD


Redirect https to http in apache 2.2 on CentOS 6


How do I change a type of block in a specific area into another block?

Is there a utility to replace one block type with another within a region?


Permissions set to 555. How can another user modify the files?

How do I deal with a compromised server?


Error message: "I've inserted a begin-math/end-math symbol..."


Change Pilkor MKP 10nF with WIMA MKP 10 10nF Capacitor

About MKP Capacitors for Inverter Welding Machine


Unknown VBS script on my browser download folder

How can I remove malicious spyware, malware, adware, viruses, trojans or rootkits from my PC?


Proof by induction that $2 + 4 + 6 + \cdots + 2n = n(n+1)$


Are there any web sites that store deleted questions?

Building an archive of deleted questions


Which one is better - more cross-type sensor or better sensitiveness of cross-type sensors?

What is the effect of the number of cross-type focus points on sharp focus?


Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference

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


Derivative of an analytic one-to-one map has no zeros

Proof that 1-1 analytic functions have nonzero derivative


How to convert querystring to paths URL using mod_rewrite?


ubuntu 14.04 wifi and Ethernet doesn't works

How to install Broadcom wireless drivers offline?


How to reopen the panel that shows when creating objects?

How to edit Parameters for an Object after it is created?


How can i pass an argument on my evenlistener without it firing the function when the page loads?

How to pass arguments to addEventListener listener function?


Schengen visa refusal on threat to public policy, security, health


Probability of observing at least $k$ heads if coins have different probabilities of heads?

Probability of obtaining at least k heads with a set of unfair coins


Prove that $(\sum_{i=1}^n i)^2$ = $\sum_{i=1}^n i^3$ by induction

Prove by induction $\sum_{i=1}^ni^3=\frac{n^2(n+1)^2}{4}$ for $n\ge1$


How to bind to certain property in a list of Model object?

How to programmatically bind a (dependency) property of a control that's inside a DataTemplate?


If I enter an IP for a website rather than the string form, does my local DNS server understand this and will I bypass the DNS process?

How does a web browser parse an IP address in a URL?


@synthesize vs @dynamic, what are the differences?


Does ARIMA require normally distributed data?

Does ARIMA require normally distributed errors or normally distributed input data?


Exception in thread "main" java.lang.NullPointerException but I am assigning to field

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


div inside col takes the full width (bootstrap 4)

How can I make a div not larger than its contents?


How to concatenate a std::string and an int


Why is pork pink after roasting to 205 F?


Clean install of Windows 10 OEM: license key issues?


Convert a WFS GET request to a WFS POST request

Make an HTTP POST request to a WFS service?


Problems with dates in MongoDB / Windows 10

Why does Javascript getYear() return 108?


How do I get the effect and usefulness of "set -e" inside a shell function?

Why is bash errexit not behaving as expected in function calls?


Should my first trip be to the country which issued my Schengen Visa?


Can I arrive before my German National Visa D is valid (e.g 2 weeks)?

Traveling to France before date of the long sejour visa


Getting Sha256 values in any arbitrary range with almost equal probability


Book about a small world which wants to communicate with a large one (humans?) on different time scales

Tiny lifeforms on planetoid that live at accelerated time rate


Can we shield a certain region of space from magnetic field?


How to put a text in particular position of an image?


How to remove the FBI Ransomware malware?

How can I remove malicious spyware, malware, adware, viruses, trojans or rootkits from my PC?


Why to use thread class when we have runnable interface in java?

"implements Runnable" vs "extends Thread" in Java


What is difference between INNER join and OUTER join

What is the difference between "INNER JOIN" and "OUTER JOIN"?


How to obtain the lower bar with the applications


Table of contents: same colour for all entries

coloring the page numbers in the table of contents


What will be the order in which filters will be called?

How to define servlet filter order of execution using annotations in WAR


Check all exceptions that a piece of code can throw

How can I determine which exceptions can be thrown by a given method?


How many different ways are there to write $2016$ as the difference of two squares?

Difference of squares - number of representations


mobile comments space stops working at line end

Entering a space on mobile site right at the end of the line is not recognised


If $a+b$ and $ab$ are algebraic then $a,b$ are algebraic

Let $\alpha, \beta \in \mathbb{C}$, such that $\alpha + \beta$, and $\alpha\beta$ are algebraic. Show that $\alpha$ and $\beta$ are algebraic.


How to get computed style of a HTMLElement


why does the PEWDIEPIE'S TUBE SIMULATOR didn't save the current game?

How to login into PewDiePie's Tuber Simulator?


Plotting the implicit function $y=\log_2(1+x\,y)$


How does Network Address Translation (NAT) works on a home router?

How does the router know which device to send packets to?


Prove $\lim \frac{cos(x)-1}{x} = 0$ without l'Hopital

Finding $\lim \limits_{x \to 0} \frac{1 - \cos x}{x}$, given $\lim \limits_{x \to 0} \frac{\sin x}{x} = 1$


For natural $n$, prove $\prod_{k=1}^n \tan\left(\frac{k\pi}{2n+1}\right) = 2^n \prod_{k=1}^n \sin\left(\frac{k\pi}{2n+1}\right)=\sqrt{2n+1}$


UEFI - Black screen when attempting to install UBUNTU

How do I install Ubuntu alongside a pre-installed Windows with UEFI?


Let $x_0$ $\in \space G$, G is open, and put $F=[x_0,\infty) \cap G^c.$ (a) Prove that $F$ is a non-empty set.


How can I repair Unity after trying to install macOS theme from noobslab? Icons and dock vanished!

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


What are the principles for setting a dslr camera to capture motion blur while panning with a moving subject?

What equipment and settings do I use for panning shots of moving objects?


Does there occur any filtering in making merge-to-HDR picture?

Is there an inverse function which will return an HDR picture to its original?


Is it okay to pronounce "ask" as /æks/, swapping the /s/ and /k/?


Ubuntu 18.04 opening system settings logs me out

Ubuntu 18.04 opening system setting logs me out


How to validate an email address using a regular expression?


What is a terminal and how do I open and use it?


What is the difference between T& and T * const?

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


Property(with no extra processing) vs public field


best way to check performance of the code in C#

Is DateTime.Now the best way to measure a function's performance?


Why is zsh ignoring my -f switch when removing files?


Django bulk_create with ignore rows that cause IntegrityError?


Does SQL check each And condition if first condition fails?

Logical operators OR AND in condition and order of conditions in WHERE


Trigger on Account object for tracking sales reps and their territories

SObject row was retrieved via SOQL without querying the requested field on Contact.Account


If $E_1\subset E_2$, then $\overline E_1\subset\overline E_2$

If $A$ is a subset of $B$, then the closure of $A$ is contained in the closure of $B$.


Why doesn't the uncertainty principle stop the formation of a black hole?

Does black hole formation contradict the Pauli exclusion principle?


How to install HPLIP on my Ubuntu to support my HP printer and/or scanner?


How to protect my Window from Wanna Cry (Wanna Crypt) ransomware attack and how to remove Wanna Cry?

How can I remove malicious spyware, malware, adware, viruses, trojans or rootkits from my PC?


How to catch all special characters during string matching?

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


Can I get the same column twice in separate joins?

How to resolve ambiguous column names when retrieving results?


Prove that for all primes p, every positive integer can be expressed as a sum of two squares mod p, $x^2+y^2 \equiv c \pmod{p}$


Why can I single click approve edits to tag wikis I edited earlier?

The user who first created a tag wiki is treated as owner for suggested edits


"children's literature" or "children literature"?

Attributive or Possessive noun: the Dell Company's staff. or the Dell Company staff?


Comma before "respectively" — Is it needed?

In my example, comma or no comma before the word respectively?


In VF page how to make a selection Readable or Editable based on the picklist value selected

Can a textbox be enabled after a certain value from a picklist is selected


Why can't you use the keyword 'this' in a static method in .Net?


How to set the font for a \section title (and chapter etc)


Constant kernel GPU panics (GPUPanic.cpp:127) on mid-2010 MacBook Pro (6,2)


Null Pointer Exception in udp headers line: "Udp udp = packet.getHeader(new Udp());" Why JNETPCAP can't initialize the Udp object

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


Why am i getting this warning in "if (fd=fopen(fileName,"r") == NULL)"?


selectManyCheckbox: Action will not be invoked after converter


How can I convert a matrix into matlab form string?

Is it possible to export the equations from Mathematica to MATLAB?


Serana disappeared during dawnguard questline.


How to crawl some website needed username and password


Lost data when switching from windows to ubuntu

How do I recover my accidentally lost Windows partitions after installing Ubuntu?


iOS 7 like semi transparent blurred view

How can I produce an effect similar to the iOS 7 blur view?


How can I install Windows after I've installed Ubuntu?


How can I install SSH server version 5.3

How do I install a .tar.gz (or .tar.bz2) file?


Design & Coding - top to bottom or bottom to top?


A macro which will output "next/previous section" if referenced section is adjacent to current one

Automatically insert "in the next [chapter/section/subsection]" if reference is sequential


How do we know that Dark Energy has homogeneous energy density?

Is the energy density of vacuum uniform in the whole universe?


Identifying tags with poorest answer rates on a site?

Stack Exchange Community Statistics results: Which questions are the least frequently answered?


why is $\omega^n \neq 0$ for a nondegenerate 2 form $\omega$.

How to show $\omega^n$ is a volume form in a symplectic manifold $(M, \omega)$?


How to implement mouse based movement in an RPG? (Java)

Making a player move to my mouse when clicked?


Proof of the relationship between fibonacci numbers and pascal's triangle, without induction

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


Aperture control flex ribbon replacement in Canon EF-S 55-250mm f/4-5.6 IS II

How can I fix a Canon lens with sand in the aperture diaphragm?


Can't extend APFS after erasing old partition as free space

Extend main APFS partition fails with "target disk is too small for this operation"


C program crash when I do a big memory allocation on the stack

Getting a stack overflow exception when declaring a large array


GUI/Unity crashing in 16.04 LTS after updates 2018-01-04, compiz segfaults


Simple, easy to understand way to soften edges?


php file to be requested without specifying the extension .php

Remove .php extension (explicitly written) for friendly URL


How do I figure out which font file is chosen for a system generic font alias?


Reflection in C#: Getting a static property from a DLL

How to get a Static property with Reflection


Sum of reciprocals of prime numbers, using alternating sings

Does the alternating sum of prime reciprocals converge?


What are the requirements to be a moderator?

There's an election going on. What's happening and how does it work?


I was updating my pokemon go and it said i had to delete it then log back in.

Is it possible to log back into a Pokemon Go account?


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


how can i make this variable t global , so that it can be used in all functions


C++ - storing pointers to stack variables

In what cases do I use malloc and/or new?


Conflicting models about how energy transferred in an electric circuit

In a simple battery + resistor circuit, what form of energy is lost from the electrons upon exiting the resistor?


Auto adjust element height depending on another element

Make a div fill the height of the remaining screen space


warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/OPT:ICF' specification


How to have collection where collection origin is not world origin?

How to Change the Origin when moving a Collection Instance


How to change hostname on a ubuntu server 18.04

How do I change the hostname without a restart?


.NET get timezone by city or by longitude and latitude

How to get a time zone from a location using latitude and longitude coordinates?


Screenshotting Google Maps and Pasting into Excel Document VBA

is it possible to display a Google Earth map INSIDE Excel?


Book about a traveler who helps planets in need

Looking for a story about a giant lost ecological ship, and the quirky guy who became its captain


IE11 breaksdown after logging to website (asp.net 4)

'WebForm_DoPostBackWithOptions' is undefined in IE11 Preview


How should I install HPLIP binary/proprietary plugin/driver for my HP printer or printer+scanner?


Is every infinite set equipotent to a field?


How to generate all permutations of a list?


Guest (not logged in) users can only sort questions with specific tag by newest


Non-derivable public key asymmetrical encryption?


Are these 2 try/catch/throw statements the same?

Best practices for catching and re-throwing .NET exceptions


Showing that a certain map is not flat by explicit counterexample


Clone directory tree structure and copy files to the corresponding directories modified after a specific date


Does a Pokémon stuck in a gym over a full day collect coins for that day?


Errors while trying to build an asteroid game in java

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


What is the probability of rolling $n$ dice until each side appears at least once?

Expected time to roll all 1 through 6 on a die


How does everyone in Star Wars understand droidspeak?

How do people understand astromech droids?


$G$ is a planar, connected graph. Let $n$ be number of vertices, $m$ number of edges and $f$ number of faces. Prove that dual graph $G*$ has $f(G*)=n$


What is the legal EL syntax for "${param.mode${cntr}}"

How to nest an EL expression in another EL expression


Every closed subset of a Banach separable space is separable

Prove that a subset of a separable set is itself separable


How do I increase my code coverage, or why can't I cover these lines?


Is it possible to make an EXACT ISO of my system to put on other computers?


Python: Difference between "re.match(pattern)" v/s "re.search('^' + pattern)"

What is the difference between re.search and re.match?


How do I deal with a compromised server?


How do I write a rails migration to convert a field type?

Changing a column type to longer strings in rails


Can I create an html link to the current page without refreshing to the top?

How do I stop a web page from scrolling to the top when a link is clicked that triggers JavaScript?


What is the right first step to take when integrating $1/(2+ \sin x + \cos x)$?

Evaluating $\int P(\sin x, \cos x) \text{d}x$


Is every sub-lattice of $\mathcal P(X)$ isomorphic to a sub-lattice of $\mathcal P(X')$ containing a singleton set?

Is every sub-lattice of $\mathcal P(X)$ isomorphic to a sub-lattice of $\mathcal P(X')$ containing singleton sets?


Where To start Learning With Salesforce Development


LaTeX Warning: Citation `foo' on page N undefined on input line XX

Question mark or bold citation key instead of citation number


Why is bubble sort time complexity referred to as n squared?

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


Vertically align individual cells in a table


Simple task: How to recolor a list line?


Condition for a stochastic matrix to be a second order transition probability matrix of a DTMC.

Characterization of two-step 2x2 stochastic matrices


The should add a C.H.I.P category to Stack Exchange!


Is dependency injection just another name for the strategy pattern?

What is the difference between Strategy pattern and Dependency Injection?


At a party, 100 guests check their hats at the entrance. Mark is the first person to leave. He is drunk and takes away a hat at random.


Minimal polynomial and diagonalization of a block diagonal matrix.


String can't change. But int, char can change


Words containing "ff" in PDF created by LyX are not searchable

What are good ways to make pdflatex output copy-and-pasteable?


Damped harmonic oscillator Lagrangian $f(t)(\ddot{x}+\alpha\dot{x}+\omega^2x)=0$ determinate a function $f(t)>0$

Lagrangian and Hamiltonian EOM with dissipative force


Ubuntu 18.04 boot error: syntax error: unexpected end of file when loading .profile

Can't log in (unexpected EOF in .profile)


It is possible to call without sim by adding a number as emergency number...?

What is an "Emergency Call," and can I  set number for it?


Unable to post answer with formatted code

Alter "format as code" button ('Ctrl+K') to detect when your selection is in a list, and format appropriately


How can gravitational waves be detected when spacetime bends the instruments?

LIGO flawed by the identical expansion of laser wavelength and arms in presence of a gravitational wave?


How can I find this font to download and use it?

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


“At the first of the month” or “on the first of the month”?


Some areas of the mesh are dark (Shadow artefacts)


How many downvotes for a question are enough?

Should questions having lots of downvotes be downvoted further?


error C2234: arrays of references are illegal


Should I apply my Schengen visa at the French or Swiss Embassy?

At which embassy should I apply for a Schengen visa when staying a few days in several countries?


How can an argument of the form f[t] be injected into the RHS of a function definition

Define a function with a function for an input


Is this the generation that will become immortal?

Short story about a woman that travels to other planets. Read online recently. She just manages to live long enough to embrace new technology


Secure an Ubuntu OpenSSH server from Brute force attacks but without a firewall or SSH key pair?


What algorithm is used to pick which comments are shown and which are hidden?

What determines the number of comments that are displayed?


How can I delete these folders with alphanumeric names in the root of drive C:?


Get selected value in dropdown list using JavaScript


Why do you need to invoke an anonymous function on the same line?


Avoiding the review queue in a hold/close question, having an answer

What is a "closed" or "duplicate" question?


My Makefile is empty but make is running some old commands

How does this Makefile makes C program without even specifying a compiler?


Is there a method to look inside at the internal code of Built-In functions?

What is the most convenient way to read definitions of in-memory symbols when we don't have the source files? (Spelunking tools)


How to do a factory reset on a SanDisk Cruzer Blade flash drive?

What can I do if my USB flash drive is write-protected or read-only?


How can FileInputStream.read change my byte array?

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


File not found, but it definently does exist


Ubuntu 14.04. Wireless MEDIATEK Corp. MT7630e not working

How do I get Mediatek MT7630E 802.11bgn Wi-Fi Adapter working?


A strange 'undefined reference to' error with g++

Why can templates only be implemented in the header file?


Stack overflow UI display is strange - what happened?

I'm seeing a very minimalistic version of the site. How do I get the full version again?


Is there a logical fallacy in this argument?

Is it a logical flaw to blame someone for an event if they were simply its causal factor?


Prove $\mathbb{Z}$ is not a vector space over a field


Word for the ability to deliver clever replies?

word describing "people who can very quickly think what to say"


Python prime numbers generator yield vs return


How to dynamically decorate a class method, while not losing the methods bound status?

Adding a Method to an Existing Object Instance


What is causing my hard drive's click of death?


When do class members use smart pointers or objects

What is a smart pointer and when should I use one?


Wacom tablet (CTH-480) supported on Ubuntu 14.04?

Wacom Graphics Tablet CTH-480 / CTL-480 Not Detected In Ubuntu 13.10


remainder of the division $2^{1990}/1990$

What is the remainder when $2^{1990}$ is divided by $1990$?


What's the use of neutral wire in single phase home supply?

AC: Why differentiate between Ground and Neutral?


Why can the y and z-components of spin be measured simultaneously?

Why only 1 component of angular momentum?


"Ten times fewer the number" versus "one-tenth the number"


Flushing all caches throws me error - PDOException: SQLSTATE[HY000]: General error: 1030 Got error -1


Why does the character "x" change to "Ã—" when placed into a .csv file after running my PHP script?


codeigniter mail is going to the spam in company email but working fine with yahoo and google

How do you make sure email you send programmatically is not automatically marked as spam?


What are the limitations of using an older ubuntu distribution when a new one is released?

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


Does Maximum likelihood converge to the same point in the both case using a canonical link function or link function?

Invariance property of MLE: what is the MLE of $\theta^2$ of normal, $\bar{X}^2$?


Is time dilation an illusion? Variation on the twins paradox


Changing specific strings to int in a list

How do I parse a string to a float or int?


Why does the density matrix $\rho$ obey a wrong-signed Heisenberg equation of motion?


How can I find the three largest files under a directory?

Sorting files according to size recursively


How to save data with white spaces in local storage using javascript in html5?


How to create a JavaScript "class" that adds methods to prototype AND uses 'this' correctly


Could someone tell me how Sir Issacc Newton derived the equation for the Universal law of gravitation?

How was Newton able to guess that gravitational force is inversely proportional to distance squared?


How can I deactivate Bluetooth on system startup?


how many pairs of plaintext-ciphertext are needed before we break AES?

Is it possible to obtain AES-128 key from a known ciphertext-plaintext pair?


Is it a bad practice to import all the sub classes of a class at a time?

Why is using a wild card with a Java import statement bad?


How to detect a player holding a certain block in Minecraft Bedrock

Is it possible to use NBT tags in commands in Minecraft: Bedrock Edition?


Why can't I login to any Stack Exchange site?

Login process incompatible with Adblock Plus


Why am getting segfault while I am still able to access those location?

Why do I get a segmentation fault when writing to a "char *s" initialized with a string literal, but not "char s[]"?


Ubuntu print output of "find" and "exec" to file


Principal component regression: some loadings are null. Is there any problem?

What do empty (missing) values in the output of PCA or factor analysis mean in R?


What happens if 2 separate abilities require you to sacrifice a creature?


What's the difference between test command and individual conditional expression surrounded by [[]]?

Why does parameter expansion with spaces without quotes work inside double brackets "[[" but not inside single brackets "["?


Example of non-trivial set that is both closed and open in $\Bbb R$?

If a nonempty set of real numbers is open and closed, is it $\mathbb{R}$? Why/Why not?


What does this line "/dev/sda5: clean, 956436/30277632 files, 37421846/121093120 blocs" mean while booting?


does the focal length change the perspective at a given distance?

What does it really mean that telephoto lenses "flatten" scenes?


Prove that $\sum_{k=m}^n x_k>1-\dfrac{a_m}{a_n}\forall n\geq m $

Properties of $x_k=\frac{a_{k+1}-a_{k}}{a_{k+1}}$ where $\{a_n\}$ is unbounded, strictly increasing sequence of positive reals


"remember visiting" vs. "remember to visit"


Lens recommendation for upcoming NYC trip?

Which lenses should be included in a travel photography kit?


How to drive a 6v relay using 74ls08 output?

MCU 3.3v to 5v Relay Driver, MOSFET or BJT


How to remove bad smell from fridge and refrigerator?

How to get rid of the smell from the fridge?


What is $P(X > 0 \mid X + Y > 0)$ given that $X, Y$ are i.i.d standard normal?


Understanding Regular Expression in Javascript

How do I decode a string with escaped unicode?


Make close button hide instead of closing

Hide form instead of closing when close button clicked


An olympiad Geometry problem involving triangles


Let $A$ a infinite set, and $a$ the cardinal number of $A$, then $a.a=a$

$\kappa\cdot\kappa= \kappa,$ for infinite cardinals


Does every complex (or real) vector space posses a vector topology in which it is separable?

How big can a separable Hausdorff space be?


How do I disable the coloured lighting in the viewport in 2.8?

How to change default viewport shading in 2.8?


"more than one does" or "more than one do"?


How to exercise options when you they're worth more money than you have?

Exercising an option without paying for the underlying


How to switch of the drum sound (at login) for ubuntu 16.04?

How do I disable the drum beat sound on the login screen?


Loops in Javascript / monitoring objects for updates


How to get percentage in float 0 to 1 with integer values?


the output of “column” is misaligned when the text is colored

Issue with column command and color escape codes


Determining the limit of $\lim_{h \to 0} \frac{cos(x+h) - cos(x)}{\sqrt{x+h}-\sqrt{x}}$ when x > 0

Determining the limit $\lim_{h\to0} \frac{\cos(x+h) - \cos(x)}{(x+h)^{1/2} - x^{1/2}}$


How would PCA help with a k-means clustering analysis?


Did Voldemort know what would happen when he died?

How would Voldemort restore himself from a horcrux?


Assign result of DateTime.TryParse or null

Nullable type issue with ?: Conditional Operator


Counting no.of text files under a directory in shell scripting


if greater than zero copy from the range

How to split numbers into columns with negative and positive values, without empty cells?


Why does fopen thown errno:22 when I use the file name with colon in Android?

What characters allowed in file names on Android?


On reputation section: all vote values are not shown for each event

How do I read the history of my reputation?


Is there a word for the use of words which, phonetically, create another word?


GetHashCode Implemetation for multiple properties in class

What is the best algorithm for overriding GetHashCode?


How to create a tuple with a method that returns the n'th element

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


Showing time inversion of a Brownian Motion $X_t = tB_{1/t}$ is continuous at $t=0$ USING the fact $X_t$ is BM on $\mathbb{Q}$?

Prove the time inversion formula is brownian motion


Why is a linear transformation called linear?


How can I use a percent % in FormatString without it multiplying by 100?


EEEK I have temporary powers to view flag count

Flagging to close shows counter next to "flag"


Difference between deploy methods : ChangeSets vs migrationTool?

What are the advantages,disadvantages of Changesets ,Force.com IDE(Eclipse)


Google Maps Location History is showing an incorrect location


how do I change the date/time format in the top panel in Ubuntu 14.04


In QGIS 3, is the vector -> openstreet map conversion missing?


If $A\subsetneq X, B\subsetneq Y$, X,Y are connected then $X\times Y- A\times B$ is connected

Prove that $(X\times Y)\setminus (A\times B)$ is connected


Alt-Tab shows two application switchers on Unity

Why do I have two Alt+Tab application switchers?


When I press tab for autocomplete in bash I get: "Cannot parse arguments: unknown option -r"

How to debug and fix slow autocomplete in bash?


Java - Small Rock Paper Scissors game. I can't find error


How to create curved edges (something I thought was impossible) like this internet example?


How should I phrase a question that must be answered with an ordinal number (e.g., the third prime)?


Find the coefficient of $x^r$ in the expansion of $e^{e^x}$.

Maclaurin Expansion for $e^{e^{z}}$ at $z=0$


Best way to capture historical changes between levels in a dimensional hierarchy


y∈ℝ, y>−1 and y≠0. Show that for k∈ℕ, k>1: (1+y)^k > 1+ky

Proof by induction of Bernoulli's inequality: $(1 + x)^n \geq 1 + nx$


how to fill out W4 when i'm getting $1600 extra income a month

How to fill out form W4 when I'm earning $1600 extra income per month?


I've got Windows 10 Pro and want to install Ubuntu on Oracle VirtualBox

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


Exponential Moving Average by time interval

calculate exponential moving average in python


Which is better, return value or out parameter?


Python: read json, filter content, write back to json

Saving utf-8 texts with json.dumps as UTF8, not as \u escape sequence


how to set attributes for array variable in java(OOP), in line 43 why o[0].name doesnt work?

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


windows 10 pro : open command window here

How do I change "Open with Powershell" to "Open with Command Prompt" when shift-rightclicking in Explorer?


How can I update the default directory for Windows Command Processor to be my home directory?

Windows 7 Administrator Command Prompt "Start in" Path


how to Unstretch Material on Object on 2.8?


Suppose $z_1,z_2,z_3$ are three vertices of a parallelogram. Find vertex $z_4$, which is opposite of $z_2$. Where all $z_i$ are complex numbers.

Prove the representation of complex numbers is parallelogram


verify or not the column in where clause


Reset Google Chrome browser on each startup

How to launch google-chrome/chromium application shortcut in fullscreen/kiosk mode


How to extract characters of a string between two characters in php?

What special characters must be escaped in regular expressions?


Resources/Books for Discrete Mathematics


If you exert force on a charge, doesn't it violate the conservation of energy?

How is the energy loss by an accelerating charge expressed in the equations of motion?


Why is a div with "display: table-cell;" not affected by margin?


How do you name columns based on query results?

Efficiently convert rows to columns in sql server


What does "Edit" mean in the review section of 'Suggested edit'?


Generated material in Blender, export to Unity

How can you save Blender materials as image files?


Capturing Metadata off Music CD during file transfer

What are some CD Ripping Programs you can use on Ubuntu?


Why is there a need of external clock even though MCUs can provide timing?


Evaluate $\sum_{n,k} \binom{n}{k}^{-1} $

Calculate sums of inverses of binomial coefficients


Quadratic Rings which are UFDs but not PIDs

One-dimensional [Noetherian] UFD is a PID


Angular momentum with respect to the centre of mass


Why are hexadecimal numbers prefixed with 0x?


Do I need to remove/modify a journal's Latex template style before submitting a paper to arXiv?

Paper accepted in journal, should I remove style file for arXiv preprint?


How to use USB Speakers with 3.5mm Aux Speakers at the same time?

How to use two audio devices simultaneously with Windows 7?


How to convert Australian grade to US GPA?

How to convert from one grading scheme to another?


Error while resizing partition before installation of Ubuntu. How can I get my data back?

How do I recover my accidentally lost Windows partitions after installing Ubuntu?


Should sentences like "I wonder..." end with a question mark?


Is it true that quickly closing a webpage opened from a search engine result can hurt the site's ranking?

Does a site's bounce rate influence Google rankings?


Windows 7 blue screen memory error bugcheck 0x0000001a


Writing to an HTTPRequest object in Java through an HTML form - without an intervening servlet

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


How can I get around giving my mobile phone number to Google?


My wireless/WiFi connection does not work. What information is needed to diagnose the issue?


How character convert to integer number?


Can't see object through a certain camera


How can I raise the Centralization level of my Petty Kingdom?


Does there exist a function satisfying the given conditions?[TIFR Mathematics GS-2017]

Function on $[a,b]$ that satisfies a Hölder condition of order $\alpha > 1 $ is constant


Mathematica can't simplify disguised expression


$\frac{\partial f}{\partial x} = \frac{\partial f}{\partial y}$


ElementList, can't find elements in file?

Parsing XML with namespace in Python via 'ElementTree'


Neural Nets: Benefits of Mixing Activation Functions?

Varied Activation Functions in Neural Networks


Alternative for deprecated PHP function: eregi_replace

How can I convert ereg expressions to preg in PHP?


Trigger flow if a specific field on the updated record changed


What is the difference between: "two-day" and "two days"

Pluralization rule for "five-year-old children", "20 pound note", "10 mile run"


To avoid oscilloscope ground short, why not simply unground the scope?

Why on earth are o-scopes earth referenced?


htaccess issues with non existent files in non existent directories

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Wrong values when reading floats from a text file in c


$gHg^{-1}\subset H$ whenever $Ha\not = Hb$ implies $aH\not =bH$


What does Lightroom do when first opening a RAW file?

Why does my Lightroom/Photoshop preview change after loading?


Short story - "One man's meat is another man's poison"


SMTP server does not respond to `SmtpClient` connection attempt. How do I fix this?


When evolving Pokemon, how is the evolved CP calculated?

How does a Pokémon gain CP when evolving?


Can initialisms be forced into acronyms?

Does pronouncing an initialism make it an acronym?


Error: "failed to connect to lvmetad" in Ubuntu 15.10

How to fix the error warning failed to connect to lvmetad no such file or directory falling back to internal scanning in ubuntu 15.10


What is the math knowledge necessary for starting Quantum Mechanics?


How is the classical twin paradox resolved?


Why is this one-way flight more expensive than round trip?

How do airlines determine ticket prices?


Does light induce an electric current in a conductor?


how to call an ASP.NET c# method using javascript


Elementary proof of $\gcd(a, b) = 1 \wedge a\ |\ b\ c \Rightarrow a \ | \ c $

If $\gcd(a,b)= 1$ and $a$ divides $bc$ then $a$ divides $c\ $ [Euclid's Lemma]


Table ID (PrimaryKey) does not increment in a proper sequence when a new record is inserted

Why are there gaps in my IDENTITY column values?


Is it possible to run apache as root, to execute scripts


What is the preferred way to declare thread in java?

"implements Runnable" vs "extends Thread" in Java


Splitting layer with many polygons into independent shapefilles?

Splitting shapefile into separate files for each feature using QGIS or SAGA


What is the name for verbs applied to the wrong subject?

Active vs passive voice with inanimate object as the subject


Proof for $\left\lfloor\frac 1j\left\lfloor\frac nk\right\rfloor\right\rfloor=\left\lfloor\frac n{jk}\right\rfloor$


How does grep 'know' where it is redirected when using --color=?


Biblatex's alphabetic style with numbers instead of years


Assign a default value to a variable symfony2 annotation

Doctrine 2.1 - datetime column default value


Rules to convert a Javascript Regular Expression pattern to C++ std::regex?

How to make HTML5 email validation regex work in C++?


video shader 300 frames to make 1000 frames

How does one use cycle's image sequence?


Why will an accelerated electron emit a photon?

Why do accelerating electrons emit radiation?


Excess charge on an insulator and conductor


Simplest PHP example for retrieving user_timeline with Twitter API version 1.1


Why ObjectOutputStream.writeObject(Object o); but not ObjectOutputStream.writeObject(Serializable o)

Why does ObjectOutputStream.writeObject not take a Serializable?


Ubuntu 17.04 installer freezes on boot text right after choosing to install

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


How do I fix a Memorex USB 8GB flash drive that shows 0 B available?


Best way to return multiple values from a function?


proving of inequality $(n!)^2 \leq n^n\cdot n!\leq (2n!)$, where $n\in \mathbb{N}$


Paradox - Special Theory of Relativity (edited)


Getting my head round spsite vs spweb vs anything else


If $2^n+1$ is prime, why must $n$ be a power of $2$?


Discrete-time sequence with labels for individual samples


Removing "duplicate" records from SQL Query

Interview - Detect/remove duplicate entries


"a 0.22 μm filter" vs. "an 0.22 μm filter"

Should the number "0" be pronounced "zero" or "oh"?


The process could not execute 'sp_replcmds' on 'S15415940'. Cannot execute as the database principal because the principal "dbo" does not exist

Why is CDC capture failing due to a missing dbo principal


How to make tables in which the text appears vertically?

How to make a rotated, multiple-row label of a table vertically centered?


Magnetic field and electric field induce one another forever

Induced magnetic field produces electric field and vice versa forever!


Prove $((u \mod N) \cdot (v \mod N) ) \mod N=(u \cdot v) \mod N?$

Product Rule for mod operator: $ ab\bmod p = ((a\bmod p)(b\bmod p))\bmod p$


Efficient way of generating all combinations of 12 numbers that add to 100 in Java

How to iterate through array combinations with constant sum efficiently?


Staging sites, how do you manage synchronising updates in the DB?

Database synchronization between dev/staging and production


How to integrate $\int_0^{\infty}\left(\frac{\sin(x)}{x}\right)^m dx$?

A sine integral $\int_0^{\infty} \left(\frac{\sin x }{x }\right)^n\,\mathrm{d}x$


Caml query to filter by two columns of a sharepoint


Why does $\sum_{n=0}^{\infty}{\frac{1}{n \cdot 2^n}} = \ln 2$?

Compute the sum of the series $\sum_{n=1}^{\infty} \frac{1}{n \cdot 2^n}$


why does my app crush when i use search editText and filter method

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


How can I increase the size of a .jpeg without losing quality?


Connect DATABASE Error TYPE: 2002: Permission denied


unmet dependencies while installing cinnamon

How do I resolve unmet dependencies after adding a PPA?


mysql query doesn't work when from the php page when are in other language (hebrew)


I want to import a .csv to Mathematica but when I do that the decimal are denoted by ",". What can I do? I need points

Import values from tab separated file, change decimal point?


Didn't authorize WINE install correctly, now have ttf-mscorefonts-installer issues

Apt/Synaptic needs to reinstall package but can't find the archive for it


Do I need a US visa to transit (or layover) through an American airport?


Any changes on layout, or creating new layout crashes my app. Android Studio


What causes atoms to have their specific colors?


Getting System() output to return as string in C++

How do I execute a command and get the output of the command within C++ using POSIX?


How to derive $\int_{\Sigma}\delta(*F)\wedge\delta A =\int_{\Sigma}d\Sigma^{\mu}\delta F_{\mu\nu}\wedge\delta A^{\nu}$ for free EM?


Converting CIDR notation to IP range in java

Converting CIDR address to subnet mask and network address


How to calculate the non-linearity of an s-box?


"The answer to question 4" or "the answer to the question 4"?

why does "square one" not take an article?


Should I include a publication where I'm only acknowledged (and not one of the authors) in my CV?


Why can't i call a method within a protected method of the same class

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


How do I install Windows XP on a computer without cd drive?

Installing Windows XP from USB pen drive


calendar push notifications is not correctly respecting the expiration

Google calendar v3 Push notification expiry


What is the formula for determining time dilation (as the object in motion)?

How do I derive the Lorentz contraction from the invariant interval?


call a function for each value in a generic c# collection

Apply function to all elements of collection through LINQ


Geometric interpretation of contour integral?

What is a geometric explanation of complex integration in plain English?


Accessing a local variable of a function from another function

Accessing variables from other functions without using global variables


Early 2000s fantasy with colored stones of power

Book series - Boy finds gem and is transported to a fantasy world


Principled way of collapsing categorical variables with many levels?


Use of an adverb or an adjective as a subject

"the above" is correct, "the below" is not?


Centralizing properties updates in one function?

Using a single worker method for properties


resume reading a log file from the point I left it last time

Display lines in last 10 minutes with specific pattern in logs


App keeps crashing due to error in text input

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


How can I vertically align elements in a div?


How do I move the origin to the center of the object


Evaluate $\lim_{n \to \infty} \sum_{i=0}^{2n} \frac{i}{n^2 + i^2}$

Show convergence and calculate the limit: $\lim \limits_{n \to \infty}\sum \limits_{k=n}^{2n}\frac{k}{k^2+n^2}$


Calling a generic method in .NET that matches multiple interfaces?

Casting an object to two interfaces at the same time, to call a generic method


cloning 1 member variable within a java class


How to write a unit-test / test class for trigger?


How to change user login password, if there's no recovery mode to select?

How to boot to the recovery mode if it is not listed in Grub?


4 different letters and 4 addressed envelopes.

The Matching Problem/Derangements - n letters to n people


How do I fix a syntax error in .bash_profile

I broke my PATH by editing my ~/.bash_profile and Bash will not recognize most commands


Is “am” ever proper English without an “I” somewhere before or after it?

Is it acceptable to begin a declarative sentence with "Am"?


Find a topological space whose fundamental group is $D_4$


Why does one lose reputation for posting a duplicate?

How should duplicate questions be handled?


Access C: Drive in Ubuntu after wubi install

How to View Windows Files on a Wubi install?


Show that $R/I\otimes_R R/J\cong R/(I+J)$


Spikes in loss function of deep neural network training

Explanation of Spikes in training loss vs. iterations with Adam Optimizer


How do we identify if an org is using NPSP

Test for presence of specific object or managed package?


Symbol for set of all polynomials of certain degree

How to look up a symbol or identify a letter from a math alphabet or other character?


Why is energy calculated with respect to distance and not time?


How do I get wires in fallout 4 to connect them to my generators


What's meaning of the `c` in `crw-rw-rw-` in linux file permissions?

Understanding UNIX permissions and file types


Serialize XML without including parent element


call function not working with cd command

Why can't I change directories using "cd" in a script?


JavaScript closure inside loops – simple practical example


Why did Sméagol turn into a 'creature' when addicted to the ring, but not Bilbo Baggins?


Can a student apply for a new PhD (in the US or UK) while he is currently enrolled into a PhD (in the US)?

Is transferring to another university an option for an unhappy PhD student?


Twin Paradox in case of two twins that don't meet


After installing xubuntu, I did not get a boot loader, help?

How do I install Ubuntu alongside a pre-installed Windows with UEFI?


C++ Downloading File By Curl Library Linker Error

What is an undefined reference/unresolved external symbol error and how do I fix it?


Destructor is not called in Factory Pattern

Why should I declare a virtual destructor for an abstract class in C++?


How to use one variable's name to refer to another variable?

Shell, Concatenating 2 strings to reference a 3rd variable


Null Pointer exception while initialize@ PostConstruct method

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


What happens when we type a simple command on shell?


Break Large Equation Between Parenthesis Using Multline


Frame inside another frame In python Tkinter

How to stop Tkinter Frame from shrinking to fit its contents?


What's the difference between a Key Derivation Function and a Password-Hash?

Key Derivation Functions vs. Password Hashing Schemes


Why do I get a segmentation fault when writing to a "char *s" initialized with a string literal, but not "char s[]"?


How to set up Ubuntu as wireless accesspoint?


Stop browser recording history for a particular website

Is there a way to exclude specific sites from remembering form history?


StreamTokenizer input number and parsed number are different


Event binding on dynamically created elements?


What are the hexagonal jump point walls?

How does long-distance space travel work in the MCU?


Why does Python's modulus operator (%) not match the Euclidean definition?

The modulo operation on negative numbers in Python


When should "person" be preceded by "a" or "the"?

Question about articles: Why is "before the train came" correct?


Noetherian prime ideals and Noetherian ring

if R is a commutative ring in which all the prime ideals are finitely generated then R is Noetherian


How to change default User-agent in mediaplayer of the android

Changing Android's default MediaPlayer User-Agent string


to-infinitive as a direct object(noun phrase)? (as in 'I promised to buy her a pizza tomorrow')

to infinitive as direct object?! (as in : I promised to get there in time.)


align numbers based on their decimal point

Aligning numbers by decimal points in table columns


Why isn’t Middle-earth filled with elves?


How to automatically kill long running MySQL queries after N seconds in mysql?

How to set a maximum execution time for a mysql query?


TikZ externalization with absolute path and MiKTeX distribution


New dialog doesn't display radio options properly in the mobile view


Network manager create wifi "access point"

Create wireless access point and share internet connection with nmcli


When does Ubuntu 16.04 use /etc/apache2/ssl/apache.crt?


PHP class method arguments without dollar symbol ($)


Local variables in zsh functions and their return code

zsh: inconsistent error handling in assignments


Who and That : Pronouns or Relative Pronouns


Mod of numbers with large exponents [modular order reduction]


javascript regex brackets match won't work, it changes the regex pattern

How do you use a variable in a regular expression?


Canceled Mac OS Big Sur update still takes 8 GB of space

How can I figure out what's slowly eating my HD space?


How do I install Guest Additions in a VirtualBox VM?


Determinant of symmetric circulant matrix.

Determinant of a square matrix in a field


Show that $\int_0^\infty \!\frac{e^{-x}-e^{-xt}}{x}\,\mathrm{d}x=\log(t)$

Show $\int_0^\infty \frac{e^{-x}-e^{-xt}}{x}dx = \ln(t),$ for $t \gt 0$


What is the cause of rolling friction? & why is it less than sliding friction?


BOOLEAN algebra NOT and DWORDs - suggest a fix

How do you set, clear, and toggle a single bit?


Indicate an object's method through his pointer in C++

How can I pass a class member function as a callback?


How to make hostile mobs hostile to other mobs?


How do I get started working with JSON in Apex?


PHP Warning: preg_match(): Unknown modifier

Warning: preg_replace(): Unknown modifier


RevolutionPlot3D: revolving around a line NOT an axis

RevolutionPlot3D: but NOT revolving about the z axis


Connection string to ms-access database not correct in deployed PHP site


how do i display an image from a certain URL in my android app?

How to load an ImageView by URL in Android?


Java if statements only displaying the else statement


Is there any way to handle Java heap space exception

How to deal with "java.lang.OutOfMemoryError: Java heap space" error?


"The maximum number": plural or singular?

"A number of students" vs. "the number of students"


Why is my peripheral vision better for seeing in the dark?

Why does a light object appear lighter in your peripheral vision when it's dark?


Changing my All City Mr. Pink to disc brakes

Can you put disc brakes on road forks originally intended for calipers?


Remove the comma between family name and given name

biblatex: remove commas between last and first names in bibliography


How to replace OS drive with an SSD on a laptop

Easiest way to move my Windows installation to an SSD?


How to get the elements from a generic List in C#?

Convert generic List/Enumerable to DataTable?


Tensor product of Hom-module and another ring


why my loop will not stop even after i enter correct


Prove that $\left|\sin x\right|\leq|x|,\;\;\forall x\in \Bbb{R}$

how to strictly prove $\sin x<x$ for $0<x<\frac{\pi}{2}$


How to assign a list with keys and values from a dictionary in Python

How can I convert a dictionary into a list of tuples?


Does sum of the reciprocals of all the composite numbers converge?

Convergence of $\sum_{m\text{ is composite}}\frac{1}{m}$


Tried to install Ubuntu, now computer won't boot, HELP!

Just installed ubuntu 14.04 but after restart it wont boot


Why am I getting a NoClassDefFoundError in Java?


Create Task in loop but all tasks take the same parameter


How does one run rails console in an Elastic Beanstalk EC2 instance?

Can you run a rails console or rake command in the elastic beanstalk environment?


Does the location of placing my  in html matter? Why does this code only work in one example? (code attached)

Where should I put  tags in HTML markup?


Blocking Windows install on Public Computers

How to disable USB storage device support


is there any Function to extract all the view modes for specific node?

How can I get a list of all available entity view modes?


Android: Timer doesn't have leading zeroes

How can I pad an integer with zeros on the left?


Principle Component Analysis on categorical predictors

Doing principal component analysis or factor analysis on binary data


how do I save files directly to the cloud from ubuntu?

Is there a Google Drive client available?


How to get country name from IP address in php

How do you parse and process HTML/XML in PHP?


Chat requirement to post images should be made explicit


What 3rd party app do I need to install to make Ctrl+Shift switch input language?


Cut out an area of image within an Image Canvas HTML5


Is there a way to enable font smoothing only for specific apps in Windows?


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


Why can templates only be implemented in the header file?


mysql_query() expects parameter 1 to be string, resource given

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


Android: Unable to pause activity : java.lang.NullPointerException: null object reference

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


How can an NPC communicate with the party over long distances?

How can we communicate short messages long-distance?


Moderators can't reset a user's network profile

Allow moderators to refresh a user's network profile


Infinitely many values of $x$ that satisfy the equations


Why does my PHP appear to be commented out when I view it in the browser?


Following a blender tutorial and rendering is grainy

Why is my donut so grainy (cycles rendering)?


What was the origin of Star Trek's Borg?


Did Dumbledore really have to wear the horcrux-ring on his finger?

Why did Albus Dumbledore put Marvolo Gaunt's ring on?


How can I count how many times a node appears in a view?


Javascript: how to set a variable's value as the key in an associative array?

Dynamically access object property using variable


Intuition behind standard deviation greater than mean for all positive values

Standard deviation of revenue where numbers are only positive


Excel VBA How to detect if something was pasted in a Worksheet


Python, is this a bug, append to a list within a tuple results in None?

Why does append() always return None in Python?


How to install .Net framework for running Windows applications?

How to install .NET framework v4.0.30319 on wine?


Find the inverse element of a group $(G,\circ),$ $x\circ y=x*a*y$

Let $G$ be a group and $c\in G$. Define $*$ on $G$ by: $x*y=xdy$ for all $x,y\in G$, where $d$ is the inverse of $c$. Prove $(G,*)$ is a group.


A closed form of the series $ \sum_{n=1}^{\infty} q^n \sin(n\alpha) $


How to open an Esri Personal Geodatabase (*.mdb;) in QGIS 3.4 of 64 bit in Windows 10 Pro?

Opening Esri Personal Geodatabase (*.mdb) using QGIS?


Master Page for Nav Menu - Partial Views with Spring MVC?


How can I add an empty directory to a Git repository?


multithreading and sending through sockets

Sending the same but modifed object over ObjectOutputStream


Cross thread operation not valid when trying to hide the form

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


Is "shined" correct? If so, is "he shined X on the tree" also correct?


What does Superman do with his regular clothes after changing in the phone booth?

Why didn't the reporters at the Daily Planet figure out Clark Kent was Superman when they kept finding his discarded suits lying around?


is there a way to place a variable as the value in HTML?

How do I change the background color with JavaScript?


removing all animation from the layer of a superview

Will sending -removeAllAnimations to a layer also propagate to all it's sublayers?


How to secure a php connect file with database passwords

How to secure database passwords in PHP?


Possible eigenvalues of a projection matrix

Find the eigenvalues of a projection operator


How do I get the result of a command in a variable in windows?


How to find double occurrence of a letter in a word


Why is $ {n\choose k} \equiv 0 \pmod n$ if $n$ is prime?

$\binom{p}{i}$ divisible by $p$, with $p$ prime


How to control \parskip space through the document?

How to use the parskip package? (space in between paragraphs)


build dynamic documents from a Textdatabase


How can I reproduce commands run on one machine on another machine?


http working but https being timed out on nginx server

Can't access Nginx webserver after configuring SSL (Certbot, LetsEncrypt)


Mathematical Induction question Using $n\ge t\ge 0$

Proof of the Hockey-Stick Identity: $\sum\limits_{t=0}^n \binom tk = \binom{n+1}{k+1}$


jQuery handle/hide expected Ajax 404 Error


What is the probability that a ﬁve-card poker hand contains "four of a kind hand"?


How does Dragon Hide interact with monk AC?

Does natural armor stack with unarmored defense?


Expand scope of a variable initialized in a if/else sequence


Restricting input box to numbers only, number keypad keys do not work


Why isn't Tony Stark injured or killed while he repairing Helicarrier rotor?

Why is Tony Stark in the Iron Man suit unaffected by G-forces, inertia and blunt force trauma?


Searching for filenames containing specific word

How to find a text file which contains a specific word inside (not in its name)


Length of period of fraction bounded by denominator

Prove that for an integer n larger than or equal to 2, the period for the decimal expression of the rational number $\frac{1}{n}$ is at most n -1.


Email and Password validation and recognizing email pattern

How to validate an email address using a regular expression?


The mystery behind the self-siphoning beads


What is the correct way to use dot punctuation to end this sentence?

What if an abbreviation is at the end of a declarative sentence? Should I duplicate a full stop sign?


May I restrict caching to disk when memory runs low?

Aborting evaluation when the memory exceeds a certain limit


What is the most effective and recommended way to install Apache-PHP-MySQL in Ubuntu?

What's the easiest way to set up a LAMP stack?


Bash while loop iterates only once whenever body contains ssh


How to make G++ preprocessor output a newline in a macro?


What is the (function() { } )() construct in JavaScript?


Can OpenGeo Suite be deployed in production environment (using WAR package) for free?

Can OpenGeo Community Edition be used in commercial project?


If Newton's third law is true, why can we sink in sand?


Finding the limit $\lim \limits_{n \to \infty}\ (\cos \frac x 2 \cdot\cos \frac x 4\cdot \cos \frac x 8\cdots \cos \frac x {2^n}) $


Cardinality of $\mathbb{R}^n$ and $\mathbb{R}$ is equal

Cardinality of $\mathbb{R}$ and $\mathbb{R}^2$


Problems with mathpazo and \mathcal with non-capital letters


Trigger "don't do this" message if question starts/ends with filler

Should 'Hi', 'thanks', taglines, and salutations be removed from posts?


Let $R$ be an infinite commmutative ring which contains a zero divisor. Show that there exists infinite many zero divisors.

If $R$ is an infinite ring, then $R$ has either infinitely many zero divisors, or no zero divisors


How to calculate the sine manually, without any rules, calculator or anything else?

Is there a way to get trig functions without a calculator?


Can I import photos from iPad to iMac that aren't in camera roll?

Can I transfer photos that are not in my iPhone's camera roll to my computer?


JSF combobox: display items from Collection

How to populate options of h:selectOneMenu from database?


On the use of hypocorisms on publications and university personnel list

Choosing my name as an author when publishing a scientific paper, can I use my "unofficial" first name?


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


Give a combinatorial proof: $ n(n+1)2^{n-2} = \sum_{k=1}^{n}k^2\binom{n}{k} $


How to prompt a user for variables without read?


Startup error Uncleared pch fifo underrun on pch transcoder

fsck error on boot: /dev/sda6: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY


Croatia Multiple entries on a multi-entry Schengen Visa

Which are the non Schengen countries that allow entry for Schengen visa holders?


$ d = \gcd(a,b)\Rightarrow\ \gcd(a/d,b/d) = 1$


Linearity Assumption in Logistic Regression

Choosing between transformations in logistic regression


Proof that $d^2 \phi = 2\pi \delta^{(2)}(r)dx\wedge dy$ in polar coordinates around a puncture?

How to use Stokes theorem in the presence of holes?


JavaScript callback without changing scope?


Helmet glass part makes hair not show for character

Can't see a glass object through another glass object in Eevee


Proof for $A,B \in M_n(\mathbb{F})$ that if $[A,B]=tA$ for $0\neq t\in\mathbb{F}$, then $A^n=0$

If $A$ and $AB-BA$ commute, show that $AB-BA$ is nilpotent


Including a back slash in a string, why don't these match in my if statement?


Logo formats for a web site and digital photographs and using for print


Jagged/Black edge artifacts when modeling


Calculating population within a polygon from a raster layer

Extract Raster Value into Polygon Attribute


Why is using a shell loop to process text considered bad practice?


Get the Selected radio button value via button click

How to change lightning-radio-group selected value programmatically?


How do I get a string representation from a nullable type?

How can I get the correct text definition of a generic type using reflection?


Main differences between SOAP and RESTful web services in Java


Problem with brackets in more than one row

problem of introducing long brackets in different lines


My picture is missing on my profile page


Show $\Phi$ is true in a model $M$ if and only if ($\forall x$)$\Phi$ is true in $M$

Proof that a formula $\theta$ is valid if and only if $\forall x \theta$ is valid


How is dynamic programming different from greedy algorithms?

What is the difference between dynamic programming and greedy approach?


Algorithm to determine if two colored graphs are isomorphic?

Determining whether two $k$-chromatic graphs are isomorphic (respecting vertex coloration)


install Radeon HD 8670A/8670M/8690M / R5 M330

How to install Radeon Open Source Driver?


How to stack two images on top of each other, and be responsive?


Show that Lebesgue $\sigma$-algebra has the same cardinality as $\mathcal{P}(\Bbb R)$


how to make wi fi to work in ubuntu 14.04 and in dell n5010


Is there a way of knowing if a certain path is a directory path

.NET How to check if path is a file and not a directory?


Any good alternatives to Notepad++ for code editing in Lubuntu?

What are the alternatives to Notepad++ on Ubuntu?


Java: splitting the filename into a base and extension

How do I get the file extension of a file in Java?


What is difference between Standard Normal Distribution and Mean Normalization approaches to feature-scaling?


How does my phone get charged via laptop USB port at lesser current (compared to wall charger)

How to get more than 100mA from a USB port


How to run exe file whereas currently running jar

Creating non-reverse-engineerable Java programs


Why wasn't the Room of Requirement used more often?

What are the limits of the Room of Requirement?


Where should I exchange euros to rubles?

What is the best way to change money in Moscow?


Graph theory - The clients can still communicate with all the remaining servers


How to keep Windows 7 restarting the PC until no `restart requirement` is required?


What component is a VZ reference designator for


two polynomials having no gcd's in a ring

Let $R= \mathbb{Q}[x^2 ,x^3 ]$, the set of all polynomials over $\mathbb{Q}$ with no $x$ term. Show that the $\gcd$ of $x^5$ and $x^6$ does not exist


How do you assert that a certain exception is thrown in JUnit 4 tests?


Does it mean we can never know the exact area of circle?


Divide the numbers 1,2,…,n into two sets of equal sum.

Partition of ${1, 2, ... , n}$ into subsets with equal sums.


When is the "Match Finish" XP actually awarded?

At which point does a game count towards my stats?


How much ram do I need to use a 4gig MySql Database?

Can you help me with my capacity planning?


How to prevent a user from seeing previous users' info by hitting the "Back" button

Prevent user from seeing previously visited secured page after logout


Will Java 17 arrive to Ubunu 18.04 LTS (Bionic Beaver)?

Why don't the Ubuntu repositories have the latest versions of software?


Are the coordinates of a multinomial distributed as binomials?

Can multinomial distribution be simulated by a sequence of binomial draws?


Why does Path.Combine not properly concatenate filenames that start with Path.DirectorySeparatorChar?


Email notification about automatic installed security updates

How to make my server email me when there are security updates?


photoshop - cut and move part of a shape layer

How to make an image look like it's been printed


Loop through JSON object in Javascript, Getting wrong result

Safely turning a JSON string into an object


SQL sever, get the number associated with the last inserted primary key

SQL - Inserting a row and returning primary key


Issues extracting Streamlink Twitch GUI Ubuntu 16.04


Showing arrowheads in line end using QGIS?


Why it is popular to use stochastic gradient descent in neural networks rather than the BFGS algorithm?

Why second order SGD convergence methods are unpopular for deep learning?


In what cases does a @comment reach a user?


Why does cpuinfo show only 2 processors?


NullPointerException triggering while creating custom Adapter

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


sorting an object based on its timestamp value

How to sort a list of objects based on an attribute of the objects?


Java Compile Error (HelloWorldApp); It shows "Error while writing" and "Access Denied"


How to convert an Update a query from MS Access to Oracle SQL Software

Update values in one table based on contents of another


IntelliJ show JavaDocs tooltip on mouse over


Non-singlet and singlet flavor combination

What exactly means "is a singlet under $SU(N)$"


Why do I have two docks in Ubuntu desktop (with GNOME 3) after installing Dash to Dock?


null object refrence when I try to call method from diffrent class


let G be a group of order pq,where p and q are primes. Show that any non-trivial subgroup of G is cyclic


Strange equality error with PyMongo-flask

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


How you choose the literature you read (Advice)

How to stay on top of recent literature?


How did the transdimensional Edo god (Edo lord) come to be the overseer of the Edo?


java.lang.NullPointerException - in AddCell method

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


simply connected subset of $\mathbb R^2$ contractible?

Simply connected does not imply contractible. Is there a nice counter example in $R^2$?


BASH variable name containing number issue


Sorting an array of objects by property values


How to fill gaps in SLC-Off Landsat 7 ETM+ Images with QGIS?


Find how many solutions of the equation $z^6+6z+10=0$ are in each quadrant.


Why doesn't Stack Exchange develop an IM-like rich client to get answers real-time?


How to switch back to mobile version after switching to desktop version?

Switch to mobile site on standard browser


Is there such a concept as „encrypted operations“ on cyphertext?

Does homomorphic encryption hide the algorithm itself?


Ubuntu 20.04 Ubuntu software doesn't show installedsoftware

Has 'Ubuntu Software' been renamed to 'Snap Store'?


element.style javascript not working in internet explorer


PDF of the largest observation in a sample


Do angular conditions work the same way as pure javascript?

Which equals operator (== vs ===) should be used in JavaScript comparisons?


Package fwupd-signed being kept back on Ubuntu 20.10

Unable to correct problems, you have held broken packages


Removing the 'code' parameter from URL - Facebook connect PHP


UTF-8 saving in mysql not working properly


What does "not constructive" mean, and how does it differ from "too chatty"?

Drop "not constructive", combine "noisy", reword "rude" and "other" comment flags


Callback of .animate() gets called twice jquery


How can I call id on div tag sent from javascript?

Event binding on dynamically created elements?


Is it safe to give a sugar daddy my bank account and routing number?

Sugar daddy wants my online banking login info to make deposits — is it a scam?


I'm trying to remember a book, in which learning a new profession = learning a new language


Why apt-get does not install latest version

Why don't the Ubuntu repositories have the latest versions of software?


What to do with a question with nine downvotes?


Why am I unable to add lines from a text file to an ArrayList in Java?

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


how to add shortcode in wordpress container

Shortcode outputs at the top of the_content


Going to the US and Mexico with two different passports

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


Difference in outputs while printing value stored in a variable and printing value directly using printf()


windows 10 launches chrome on start up automatically?

How to initiate a Full Reboot/Shutdown on Windows 10 Fall Creators Update


how to type inverse Vectorization operator ivec() in latex?


Rigid Body animation just falling (not colliding)


Should I use t-test on highly skewed and discrete data?

Should I use t-test on highly skewed data ? Scientific proof, please?


$Tr(A^2)=Tr(A^3)=Tr(A^4)$ then find $Tr(A)$


How do I upgrade from 14.04 LTS to 16.04.1 LTS?


Relationship between balloon size and pressure


Headphone jack apparently not working Acer Laptop


list index not increasing in python if same value appears again


One of my players is too passive and uninterested


calling member function from null pointer

Accessing class members on a NULL pointer


Null Pointer Exception when binding my buttons in Eclipse (JavaFX)?

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


$\varepsilon$-number countability without choice


Explanation of $A \to B = \neg A \lor B$

In classical logic, why is $(p\Rightarrow q)$ True if both $p$ and $q$ are False?


Will having multiple domains improve my seo?


SQL server service won’t start after disabling TLS 1.0 and SSL 3.0

SQL Server compatibility with New TLS Standards


How do I disable the Java updater on OS X?

Disable Java Auto Update Prompt for 1.7u25 on Mountain Lion


xelatex: I can't write on file `test.pdf'.


If $A$ is symmetric and $Ax$ is an eigenvector of $A$, does $x$ must be an eigenvector of $A$?


What about reviewing in a mobile device?

Review option on mobile phone not available?


Use Enum.values in with generic class extending Enum


Why doesn't the Windows command prompt window maximize to the full screen size?


How to execute curl command from python script?

How to execute a program or call a system command from Python


Single Image Render Fail -- cycles and internal Blender 2.71 and 2.66

Blender is rendering an older version my project


Can the half-life of a free neutron be calculated or is it just empirical?

Why is the (free) neutron lifetime so long?


How can I install Ubuntu without removing Windows?


How to apply toastr notifications when user get leveled up?

How can I send a live notification when a user gets leveled up?


What is error (0xC0000005) and how do I fix it?

When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?


How do I create a header on only one page in Microsoft Word?

How can I remove header from the 2 first pages in document?


Vmatrix not showing left line in table environment

Why does \rowcolors cut matrix delimiter?


why isn't there a "to" before "the" in "confidential treatment will be accorded the Confidential Information"?

"be accorded someone" or "be accorded to someone"?


How to return two values in a C++ function

Returning multiple values from a C++ function


Incrementing value in repeat loop unprecise (R code)?


How can I play Splitscreen in Minecraft Xbox 360

How can we play split screen in the XBOX 360 version of Minecraft?


How do I install software using the Ubuntu Software Center?


How many GB of data can be written to an 80GB Intel 320 series SSD?


What is the difference in meaning between "photo" , "image" and "picture"?

What is the difference between "photo" and "image"?


What is the safest way to move the iTunes Library from one hard drive to another?


Is there a ZIP code I can enter when paying-at-the-pump in the USA with a South Korean credit card?

Is there a ZIP code I can enter when paying-at-the-pump in the USA with a foreign credit card?


Why are redheads called "gingers" when ginger is yellow?

What is the origin of the term "ginger" for red-headed people?


i want while loop for date 2018-03-28 to 2018-04-02 in unix


How to Upgrade from Discontinued Skype for Linux 4.3


What is the difference between quick cook and traditional steel cut oats?

Difference between old fashioned and quick oats?


Using value of the send-DE as value for update contact in Journey Builder

Data extension values in the "Update Contact" activity in Journey Builder


SQL Reporting Services (SSRS) - Blocked process on ReportServer, SP CheckSessionLock


Making a XML tag required when serialzing (C#)

Can I fail to deserialize with XmlSerializer in C# if an element is not found?


Recommendation for a Download Manager for ubuntu?

What download managers are available for Ubuntu?


Multiplication in Permutation Groups Written in Cyclic Notation


Can I scale a text box numerically without stretching the type?

Scaling a text box in Illustrator CS6 (without scaling text)


Do we use abstract algebra in real life?


Call to a member function on a non-object


Automatically provide unique id in the database


Why don't Java Generics support primitive types?


How to validate an email address using a regular expression?


Make "last seen" on the profile page less exact

Reduce precision of "Last seen" to hours rather than minutes


Split a List into different Lists based on chunk size (Number of lines)


When I saved the file (Ctrl + S) the texture disappeared

Why did the texture I painted in texture paint mode disappear?