Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - cannot find symbol

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


Null pointer exception on Room Database; on getDatabase() method


Need help with proof for Dedekind cuts on $\mathbb{Q}^+$


Find all $n$ that give us a number divisible by 19

Prove that the expression $5^{2n+1} \cdot 2^{n+2} + 3^{n+2} \cdot 2^{2n+1}$ is divisible by 19.


Changing the default title of confirm() in JavaScript?


How to retry the callout on http request timed out in rest apex callouts?

How's This for a Simple HTTP Callout Retry Framework?


how to split comma string as two variables.?

How do I split a string, breaking at a particular character?


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


Is a product of two Noetherian schemes over Spec $\mathbb Z$ a Noetherian scheme?


How to split an array into chunks of a given length in python?

How do you split a list into evenly sized chunks?


Are there any dictionaries that be able to look up words in word families?

What are your favorite English language tools?


Show that the angle that a tangent line of a hyperbola forms with the intersection with a vertical line, and a focus is a right angle.

The portion of the tangent to any conic intercepted between the point of contact and the directrix subtends a right angle at the focus of the conic?


If photons have no (rest) mass, why would black holes attract light?


How do I stop my Mac OS X from going to sleep?

How do I stop my 2013 Macbook Air from putting the computer to sleep?


How to properly install and configure JSF libraries via Maven?


How to dynamically remove the columns in ireport


What is the sum of series in terms of z and N of this expression?

Values of $\sum_{n=0}^\infty x^n$ and $\sum_{n=0}^N x^n$


Existence of a real $2 \times 2$ matrix M such that $M^2 = \begin{pmatrix} -1 & 0 \\ 0 & -1-\epsilon \end{pmatrix}$

A real $2 \times 2 $ matrix $M$ such that $M^2 = \tiny \begin{pmatrix} -1&0 \\ 0&-1-\epsilon \\ \end{pmatrix}$ , then :


Ubuntu installation can't detect hard drives


Running Ubuntu on old hardware (Pentium 4)

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


subscript next to sum in equation environment

Show inline math as if it were display math (and vice versa)


Debug suddenly stops recording debug logs

Dev Console Debug Log Becoming Unreliable?


why Booleans slow my computer more than expected


How to combine GROUP BY and ROW_NUMBER ( ) OVER

Select distinct for one column and many in another column


Test for a player who isn't wearing a helmet? [1.12.2]

How to use exclamation marks in Minecraft commands?


Characteristic polynomial and minimal polynomial of a linear operator $T$ coincide

Characteristic polynomial equals minimal polynomial iff $x, Mx, \ldots, M^{n-1} x$ are linearly independent


Start for a proof of the fundamental theorem of algebra

For a polynomial $p(z)$, prove there exist $R>0$, such that if $|z|=R$, then $|p(z)|\geq |a_n|R^n/2$


Why did Crouch Jr. transform into a healthy version of Moody?

How do injuries work with Polyjuice Potion?


How does Captain America return the stones when some of them are not even in their original forms?

How could they return the Infinity Stones in their "raw" form?


How do I set a variable to the output of a command in Bash?


What good resources exist for an inexperienced user to explain how to safely upgrade Ubuntu Mate to 18.10 from 18.04?

How do I upgrade to a newer version of Ubuntu?


How can I inject a service class properly without getting nullpointer exception?

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


Prime but not maximal ideal in k[x,y] is principal

What do prime ideals in $k[x,y]$ look like?


How do Expertise and the Acrobat feat proficiency effects combine?

Do features that allow you to add twice your proficiency bonus, under some other name, stack with Expertise?


Sound Recorder with "Record as" list empty in 13.04

Sound Recorder does not show "record as" option


How do I use reflection to call a generic method?


Need to output javascript date object from a php json_encode call

Can a JSON object returned by PHP contain a date object


Bring two handbags worth $400 into India duty free

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


What is the difference between match_parent and fill_parent?


How to fetch n no of elements from a list in a loop.?

How do you split a list into evenly sized chunks?


limit of a sequence with $\pi $ and $ e $

What is the limit of $n \sin (2 \pi \cdot e \cdot n!)$ as $n$ goes to infinity?


Google maps doesn't appear when i set the height to 100%


undefined reference to boost::system::system_category() when compiling

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


Why score test, Wald test, Likelihood Ratio Test etc?

Why do my p-values differ between logistic regression output, chi-squared test, and the confidence interval for the OR?


Using tab delimiter in Cut in Unix Shell Scripting

How to define 'tab' delimiter with 'cut' in BASH?


Select By Atribute using python script on .Shp file getting error 000840 value is not raster layer


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


How can I pass the variable to the to RegEx?

How do you use a variable in a regular expression?


How can I convert ereg expressions to preg in PHP?


seeking deeper understanding on the powershell -replace magic

What's the difference between .replace and -replace in powershell?


Google Location history showing me in another continent? Did someone hack me?

Google Maps Location History is showing an incorrect location


Write an entire function in terms of 2 entire functions

"Maximum common divisor" for entire functions


Regex all character plus some punctuation character


Error while opening a different partition in ubuntu

Unable to mount Windows (NTFS) filesystem due to hibernation


how to create and send the request/response body for the post method in test class

How do I unit test code that includes a callout?


How to insert a graphic/figure into LaTeX from Word?


Show $F_{n+1} \cdot F_{n-1} = F_n^2 + (-1)^n$ for all $n \in \mathbb{N}$


What exactly does $\langle a,b \rangle$ mean? Where a and b are elements of a group G?

Notation question: Subroup generated by two elements?


Open file from remote computer on host computer


Set limit to one author when using "et al." in biblatex


Precision problems with realistically scaled planets/terrains

How to generate or smooth really large procedural terrain?


How to ensure that string interpolated into `sed` substitution escapes all metachars


I am having difficulties in the confirmation of two passwords in java where my condition statement in if else looks like not working


Can anyone tell me why rsync is no copying files from the source's subfolders?


Can I get a visa to Germany outside my home county as a student in the USA?

Can I apply for a Schengen visa at a country where I'm not a citizen? If so, under what conditions?


Best Lens & Camera settings for dance concert with average lighting


What will be the effect on a rigid body if two like unequal parallel forces act on the body?

What will be the effect on a rigid body if two unlike unequal parallel forces act on the body?


Rational Coordinates with two intersecting lines.


Questions repeating on consecutive pages

Browsing Questions shows the same questions on different pages


Two infinite dimensional spaces whose Banach-Mazur distance equal to 1(details in the proof)

The Banach-Mazur distance is not reached


Any slang word for "debt-collector"?( specially among gangsters & criminals!)

What do you call a person who is given money to cash your check, usually using force, when the indebted people refuse to give your money back?


Question about difference between "rent" & "hire" & "take"


Removing stop words using application form c#


What is the difference between client-side and server-side programming?


How to simulate key presses or a click with JavaScript?


How to evaluate a function using ParametricNDSolve?

Integrating a solution of NDSolve into table


Are PROCEDUREs preferable to FUNCTIONs in MySQL?

MySQL stored procedure vs function, which would I use when?


Entire function bounded by a polynomial is a polynomial with a less or equal degree- complex function


Take $f$ and entire function such that $f(z) = f(z+1)=f(z+\sqrt{2})$, then it is constant

Doubly periodic entire function with periods that are linearly independent over $\mathbb{Q}$ is constant.


Which Wi-Fi channel should I use for my Wi-Fi?


Why is my iron ore disappearing when mined with a wooden pickaxe?


Show that: $\int_{0}^{1}f\left(x\right)dx\ .\ \int_{0}^{1}g\left(x\right)dx\ \le\ \int_{0}^{1}f\left(x\right)g\left(x\right)dx$

Given two increasing continuous functions $f,g$ prove that $(b-a) \int^b_a f(x)g(x) dx > \int^b_a f(x) dx \int^b_a g(x) dx$


Convert data from many rows to many columns

How to reshape data from long to wide format


Find the sum of the series: $\cos^3 \alpha +\cos^3 {3\alpha} + \cos^3 {5\alpha}+....+\cos^3 {(2n-1)\alpha}$.


Does the Bay of Ice freeze in winter, allowing the others to simply walk around the wall?

Why can't the Others go around the Wall at sea?


How to make app windows go full screen in current Space?

How to tile windows without going into full screen?


How to edit mp3 artists property in the terminal

How to extract/inject ID3 tags via bash?


How does the mechanism for pushing a question to the reopen queue work?


Can you leave at a connecting airport and miss the leg to the destination?

Is leaving airport at a stop before the final destination illegal?


Showing there is a unique group table for $\{1, a,b,c\}$ such that there is no element of order $4$.

Cayley tables for two non-isomorphic groups of order 4.


php get date from weeknumber and day number

How to get date from week number & day number and year?


What does a colon in a struct declaration mean, such as :1, :7, :16, or :32?


Refreshing a post via the "change" notice causes the question notice to disappear

Why does the question's closed status disappear when clicking to load a new edit?


Want to explore the latex template knowledge

What are good learning resources for a LaTeX beginner?


Is there a general formula for $I(m,n)$?

Closed form for $ \int_0^\infty {\frac{{{x^n}}}{{1 + {x^m}}}dx }$


18.04: How to get Wayland back after upgrade to 18.04?


If $f:U\to V$ is holomorphic and $f'(z)\neq 0$ for all $z\in U$, then$f$ is locally bijective.


fatal error: Class 'mysqli' not found in C:\xampp\htdocs\data01\connectionSer.php on line 16


How to sort array containing objects by those object keys

How do I Sort a Multidimensional Array in PHP


How is Cycles different from Blender Internal?


Design Patterns - Adapter pattern vs Decorator Pattern?

How do the Proxy, Decorator, Adapter, and Bridge Patterns differ?


Why is the rank of this matrix $2$ (solved, thanks)?

How can I quickly know the rank of this / any other matrix?


PreparedStatement throws NullPointerException in SetString

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


How can I know if terminating chkdsk caused corruption?

Manually aborted CHKDSK /r at this point, was data changed?


How to calculate new Date value from a Date variable and a int variable

How can I increment a date by one day in Java?


Why does the Python runtime coerce the return of "in" to bool, but not the result of comparison operators (==, >, <, etc)?


Why do the temporal police of the 29th century Federation not correct the timeline when Spock creates an alternate reality?

Why didn't Temporal Agents stop Nero from destroying Vulcan?


A finite set such that $x*y=x*z \implies y=z$ and $y*x=z*x\implies y=z$

Suppose $G$ is a semigroup and it holds both left and right cancellation.


How can I kill a  process whose parent is init?


JMustache credit is mentioned as Butterknife

JMustache attribution is incorrectly listed as Butterknife


I have AMD gpu, should I move to Ubuntu?


What (if ever) is the context at which I should use the term "various and sundries?

When is it appropriate to use the idiom "various and sundry"


why is my attr_accessor working for getting but not for setting?

Why do Ruby setters need "self." qualification within the class?


What film/TV program was set on a spaceship and...? (I can only remember the ending so have kept the title uninformative!)

Movie featuring  space crew, murders, a forbidden door and ending with a revelation


Expectation and variance (unknown problem type)

Rolling a die until we have all the numbers- variance


Attempt to invoke virtual method 'void android.widget.RadioButton.setTypeface(android.graphics.Typeface)' on a null object reference

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


How to upgrade from 8.04 (hardy heron) to the latest upgrade

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


Ubuntu 14.04 LTS randomly freezes (graphics/unity only)


Problems Changing Background Color in PrimeFaces Tabs Component

How do I override default PrimeFaces CSS with custom styles?


How do I post animated GIFs on Facebook?


Find day difference between two datetimes (excluding weekend days) in Python?

Number of days between 2 dates, excluding weekends


Visit UK like a tourist with C-Visit-business

Travelling on Business visa to UK for tourism purposes


Convert a number to a string with specified length in C++


How to implement "String.format()" in Java?

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


Adobe Flash Player Installation in Ubuntu 18.04; E: Malformed entry

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


How do I detect what .NET Framework versions and service packs are installed?


Does applying for a multiple entry Schengen visa instead of a single entry the first time hurt my chances of a visa getting granted?


What are the exact criteria for the example question on /about?

What determines the questions available for selection in the tour page?


Is Chrome's JavaScript console lazy about evaluating arrays?


Get index of the element nearest to the given value


Setting metric/imperial as default units

How to change Blender's default startup settings?


Is the static friction greater or less than the kinetic friction when an object is moving? Why?

Why are there both Static and Kinetic Friction?


Missing space in 512 SSD disk size (not partition size)

Why are hard drives never as large as advertised?


Why is my mesh transparent in viewport shading?

AMD GPU Material in "material preview mode" and "rendered mode", is entirely gray as background. Only outline is displayed


$p$ smallest prime dividing $G$ subgroup with index $p$ normal in $G$


Prove $z_1$, $z_2$ ,$z_3$ on complex plane are collinear iff $\frac{z_3-z_1}{z_2-z_1}\in\mathbb R$

What can be said about complex numbers $z_1, z_2, z_3$ if $\frac{z_1 - z_3}{z_2 - z_3}$ is real?


What is the difference between Register and volatile? when to use use which one ? what is the meaning to volatile register variable?


How to dismiss UIPopover from a button in the Popover


Order by frequency of occurence within a field

Mysql count instances of substring, then order by


\overbrace and \underbrace with square bracket


Call a function written inside of __init__ somewhere else in the Class


The expected value of log Gamma function

What is the expected value of the logarithm of Gamma distribution?


$n=\dim V$. Then $V=\ker(T^n)\oplus\mathrm{range}(T^n)$

For $V$ vector space of dimension $n$ under $\mathbb C$ and $T: V \to V $ linear transformation , show $V= \ker T^n \oplus $ Im $T^n$


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


Can I set a list of values to a list of keys in dictionary?

How do I convert two lists into a dictionary?


Using cprotect and environments with multiple arguments


Is "any of (plural noun)" used with a singular or plural verb?

Should the noun after "any" be singular or plural?


Where to find moderator replies related to declined flag?


Is there any 64 bit version of skype available ?


What is the most managable way to install a program from source in Debian?


Memory alignment and padding — difference between 32 and 64 bits

Why isn't sizeof for a struct equal to the sum of sizeof of each member?


IndentationError: expected an indented block || not like the others

Why am I getting "IndentationError: expected an indented block"?


Truncate Float value up to two decimal point in java

How to round a number to n decimal places in Java


How to estimate the confidence interval using sample average and sample size ONLY?

Confidence interval for Bernoulli sampling


Do all iPhones really delete themselves after 10 failed passcode attempts?

Is there a limit to the number of attempts to logon to an iPhone 8?


How do you remove duplicates from a list whilst preserving order?


Need help understanding Booleans (setting and use)


how to find the source where the spam is originating from

How can I find out where an email really came from?


"What questions [is/are] your data team hoping to answer?"


In Bash scripting, what's the meaning of " $! "?


JavaScript Regular Expression Email Validation

How to validate an email address in JavaScript


Using razer Core X with amd 5700 XT on Mac


How to change the default language of Android Emulator?


Rewrite the field label text on node dispaly

How to remove ":" (colon) when displaying field name?


convergence of $\sum a_n$ implies convergence of $\sum \frac{\sqrt{a_n}}{n}$

Suppose $\sum{a_n}$ converges. How do I prove that $\sum{\frac{\sqrt{a_n}}{n}}$ converges


Can you use meta-magic/sorcery points twice in a turn?

Casting two cantrips, both modified by metamagic?


Undefined reference error for template method

Why can templates only be implemented in the header file?


SQL server 2008 Express x64 in windows 8.1 fail


$\gcd(a,b,c)=\gcd(\gcd(a,b),c)\,$ [GCD Associative Law]


Reverse (parse the output) of Arrays.toString(int[])


AMD GPU Material in "material preview mode" and "rendered mode", is entirely gray as background. Only outline is displayed


single query to fetch rows from mysql table using count(*) of two coloumns

single query to print all the rows whose count is greater than 10


Can a Goblin boss make you hit yourself?

Can a Goblin boss redirect attacks to non allied goblins?


Differentiating between built-in functions vs built-in methods in Python

What's the difference between a method and a function?


How to search in all the files of a project in IntelliJ Idea?


Optional params[] array being named, can i do this?

Named arguments call in C# with variable parameter number


is $\sigma$-algebra $\mathcal{F}_1 =$ {$X \subset \mathbb{R}: X \textrm{ or } \mathbb{R} \setminus X \textrm{ is countable}$ } countably generated?

Generating set of countable, co-countable sigma algebra on $\mathbb{R}$


What is the meaning of ?? and ! in ConTeXt?


Colored borders around windows after update


Proof that $\vert\int_a^bf(t)dt\vert\le\int_a^b\vert f(t)\vert dt $ for complex integration

Prove $\left| \int_a^b f(t) dt \right| \leq \int_a^b \left| f(t) \right| dt$


Where can I download free or open access census datasets for China, including their respective spatial boundaries?


Python How to calculate number of days between 2 dates?

How to calculate number of days between two given dates?


make a bootable usb for windows 8.1 recovery in Ubuntu

How can I create a Windows bootable USB stick using Ubuntu?


How do align intertext with math instead of an awkward space?

How can I add left aligned text to an equation?


Why is there no primitive type for String?


Is there any way to set up Guest account in Ubuntu 18.04

How to enable guest sessions on Ubuntu 18.04 or later?


To test the convergence $\sum{\frac{1}{(\ln {n})^{\ln{n}}}}$


How do I create an icon shortcut in the linux - Centos navigation system?

How can I add an application to the GNOME window manager?


How do I find the limit of the recursive sequence?


Using the Fitch system, how do I prove $((p \implies q) \implies p)\implies p$?


Why did Killua kill the opponent of Leorio?

In the final phase of the Hunter Exam, why does Killua act the way he does?


if $\sum_{n=1}^{\infty} a_n$ converges absolutely then prove that $\sum_{n=1}^{\infty} a_n^2$ converges

Prove that if $\sum{a_n}$ converges absolutely, then $\sum{a_n^2}$ converges absolutely


How extern is working in C, inside function

How to correctly use the extern keyword in C


How to explain the difference between parameter and hyperparameter in machine learning?

What to treat as (hyper-)parameter and why


How can i wait on severals threads completed their code?

How to make a Java thread wait for another thread's output?


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


\citet and \citep in TeXstudio using natbib

Natbib In-Text Citation displays (author?)


Tradeoffs around using a query string vs embedding version number in the CSS/JS files

What's the best way to version CSS and JS URLs?


Convert integers to strings to create output filenames at run time


Why do @synthesize variable names begin with an _?

What does @synthesize window=_window do?


In a limbo stage in PhD. How to get out of it?

How should I deal with becoming discouraged as a graduate student?


How can I Increase swap partiton by decreasing root partion and be able to hibernate my system


Moving points between different Stack Exchange sites

Can there be an option to allocate rep from any site account for offering a bounty?


Files lens and xdg-open only open nautilus but not the correct applicatiion


How do I get rid of worthless penny stocks if there is no volume (so market/limit orders don't work) and my broker won't buy them from me?

Do I have to sell worthless stock to claim a loss and clean up?


Remove space between left bracket and square root

Undesired spacing before \sqrt[n]{x}, proper way to fix?


Cryptocode package question, protocol with 4 players

TikZ or cryptocode package for cryptographic protocol diagrams


‘Due to’ vs ‘Because of’ — Which is correct in this sentence?

Can “due to” and “because of ” be used interchangeably?


Why was my flag for "too localized" declined, but the question closed with the "too localized" reason?

Why does flag marking as helpful/declined not always correlate with moderator action?


how to read huge csv file into R by row condition?


Continuity and Joint Continuity (further thought)


Is the Higgs particle the final one predicted by the Standard Model?


Restrict a class to be instantiated not more than five times

How do I restrict object creation not more than 3 in Java class?


Force Thunderbird to always use system default browser instead of internal to open links in emails

How do I make Thunderbird open links in Chromium?


Ubuntu 16.04 full disk encryption after installation

Enable disk encryption after installation


Where should I escape HTML strings, JSP page or Servlets?

XSS prevention in JSP/Servlet web application


GRUB Won't load after instaling Ubuntu 14.04 on Windows 7 Dell Inspiron 3537

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


GrassGIS process for DTM of UAV point cloud

Determining bare earth DEM from unclassified LAS file?


Notify-send not working when run from apache

Open a window on a remote X display (why "Cannot open display")?


How to avoid quotes around strings in variables with a custom format in the display inside Datasets in V11?

remove quotes in a combination of a text with graphics in the JournalArticle Style


Update iPad 3 iOS 5.1.1 to 7.0.4 not 7.1?

Can I install any iOS version I wish by picking and choosing which firmware to restore?


code running as string need to convert it to float

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


How can I reset the answers of the security questions of my Apple ID?


$_FILES empty when trying to do a file upload

Why would $_FILES be empty when uploading files to PHP?


Question mark or bold citation key instead of citation number


How to delete all files except one named file from a specific folder

Delete all files except files with the extension pdf in a directory


Proof by Induction: If $x_1x_2\dots x_n=1$ then $x_1 + x_2 + \dots + x_n\ge n$

$x_1 \cdot \dots \cdot x_n=1 \implies x_1 + \dots + x_n \ge n$


Are there any advantages in using size_t instead of unsigned int?


'' ("the cache has no package named 'wine-staging-I386'")

Unknown error: '' ("The cache has no package named wine-staging-i386")


PHP File upload not working, noting output to browser


UnboundLocalError on local variable when reassigned after first use


Event binding on dynamically created elements?


Last upgrade crashes network manager (no internet connection, no applet)


How to read the man page for a bash builtin?

Can I get individual man pages for the bash builtin commands?


Error "Non static method cannot be referenced from a static context"

What is the reason behind "non-static method cannot be referenced from a static context"?


Non significant intercept in linear model

Linear regression: Intercept isn't significant


Why is my libre office looking like old windows office?

Libreoffice theme integration not working (Xubuntu)


how to find continuous blank lines and convert them to one


Cannot get Jasper Reports to work - Getting java.lang.NoClassDefFoundError: net/sf/jasperreports/engine/JasperCompileManager

Why am I getting a NoClassDefFoundError in Java?


Showing a functional equation gives rise to exponential function

How do I prove that $f(x)f(y)=f(x+y)$ implies that $f(x)=e^{cx}$, assuming f is continuous and not zero?


clipboard operation between LibreOffice and other application

Inconsistent copy and paste behaviour. Is there a fix?


What do You Call Two Siblings That Are Born on The Same Day, But Different Years?

What's the term for siblings born 1+ years apart on the same day?


Can a character with darkvision see into Hunger of Hadar?

Does Devil's Sight enable one to see into Hunger of Hadar?


True Or not: Compact iff every continuous function is bounded

Pseudocompactness does not imply compactness


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


Prove this function is differentiable at a point but the partial derivatives are not continuous

Proving a scalar function is differentiable at the origin but that its partial derivatives are not continuous at that point.


How to remove a directory which is not empty?

How to delete a non-empty directory in Terminal?


Site issues and issues with banning users

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


How to secure private class field with PHP OO?

How come the PHP private class var is not private?


Stretch and scale a CSS image in the background - with CSS only


Which one is correct: "The friend who I met is cute" or "The friend whom I met is cute"?

What’s the rule for using “who” and “whom” correctly?


Make standalone class without tikz look like a cropped article

I'm using the standalone package. How can I get regular paragraph breaks?


grab text by pattern with start and end tag in multiple lines

Search for a string and print everything before and after within a range


How to perform a calculation comparing every element with every other element in numpy/scipy

Using numpy to build an array of all combinations of two arrays


Suddenly getting "Announcer" badges every few minutes?


Implication and its consequences for real world


Momentum conservation in ball and massive wall collision

Contradiction between law of conservation of energy and law of conservation of momentum?


Residuals in a linear model are independent but sum to zero; isn't it a contradiction?


How to access the correct `this` inside a callback?


When will Nvidia CUDA toolkit be updated to version 11?

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


Can there ever be any problem when using gedit to edit system files with 'sudo -H gedit'?

Why should users never use normal sudo to start graphical applications?


Channel 0: open failed: administratively prohibited: open failed

SSH tunneling error: "channel 1: open failed: administratively prohibited: open failed"


Cannot install any Linux on newly built computer. Splash screen>flash of desktop>only mouse on screen


Event binding on dynamically created elements?


Will a wheel keep rolling in perfect vacuum?


How to check if my eSATAp port provides 12V power?


Does my wifi card Realtek Semiconductor Co., Ltd. Device d723 support Ubuntu?

Cannot see my wifi [10ec:d723] when trying Ubuntu


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


Can I use Weight Paint to Control Animation Properties?


Build Interactive Web map for offline/localhost visualisation


Leibniz formula for successive differentiation proof?

How to use induction to prove the product rule for higher derivatives?


Why can two (or more) electric field lines never cross?


nested ternary cannot get local variable, react


Who/What are the First Order stormtroopers?

Are the Empire (or First Order) not using clones any more? If not, why?


How to fix "The system is running in low-graphics mode" error?


What does -1.#IND mean (double stream output)

Why are the return values of these doubles -1.#IND?


Expected number of games so that every player has been an Imposter in Among Us

Expected number of times a set of 10 integers (selected from 1-100) is selected before all 100 are seen


NullPointException in Fragment with CheckBox

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


Win8: The program can't start because MSVCR71.dll is missing from your system


How to stop google translate from translating youtube title

Disable title translation of YouTube videos


Is there a way to install jar local gradle repository, as it in mave (maven install:install-file


What is this ? What is ""role-playing game" and which are the most famous/representative ones?

What is role-playing, and where do I start?


Stuck in infinite for loop. Can't figure out why?


Carrying television in flight from Germany to India

Taking 40" TV to northern Cyprus as baggage?


Why do we need $\sup$ and $\inf$ when we have $\max$ and $\min$.


What is difference between set and family?

What is the difference between "family" and "set"?


PHP on CentOS 6.5 can not connect to Postgres DB

Can't Connect to PostgreSQL with PHP pg_connect()


How many times does Sneak Attack damage apply with several attacks?


Getting errors in update in ubuntu 16.04


Are Tony Stark and Pepper Potts back together?

Tony's Private life in Spider-Man: Homecoming


If $a$ ($a\ne 1$) has order $t\mod p$, show that $a^{t-1}+a^{t-2}+\cdots+1\equiv 0\pmod{p}$.

I suppose $(a,m)=(a-1,m)=1$, show that $1+a+a^2+\ldots+a^{\phi(m)-1}\equiv0\pmod m$


Domain Used in the past will affect Current SEO Project

Buying expired domains - what to look for?


awk: any way to access the matched groups in action?

AWK: Access captured group from line pattern


Hide admin tool bar from back end dashboard

Removing admin bar from wordpress dashboard


Why SQL Server Service Account connects to the DAC?

How do we find who used Dedicated Admin Connection


How do you pass a string from one activity to another?

How do I pass data between Activities in Android application?


How to make a RewriteRule on Apache .htaccess to fix a broken image?

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


Rewarding an existing answer which has not been accepted but already rewarded by others


Undefined reference to boost using C++11

Why does the order in which libraries are linked sometimes cause errors in GCC?


Computation of the maximal ideal of a localized quotient ring

Theorem 5.1. Chapter I in Hartshorne Book's


Best time to buy a flight to South America from Europe

Flight tickets: buy two weeks before even during holiday seasons?


How can I improve Ubuntu overall system performance?


Python: strange list behaviour when initialising empty nested list

List of lists changes reflected across sublists unexpectedly


Is studying past exams I found online cheating?

Is it ethical to use past years' final exams that the professor hasn't explicitly given, to study for a final in the same class?


How to calculate $\langle 1/r^2 \rangle$ for hydrogen using Hellmann-Feynmann Theorem? Wikipedia is wrong, isn't it?

What are independent parameters in Hellmann–Feynman theorem?


What are the legal consequences of customizing the LiveCD?


When a druid wild shapes to a beast that has double proficiency with a skill, should the druid's proficiency bonus be doubled with that skill?

Does a Druid in Wild Shape add their own Proficiency Bonus to the physical attribute of the Beast for Skills?


How to update jquery version without hacking or updating the core?

Override a single JavaScript file from a module


Difference in List l = new ArrayList() and List l = new ArrayList()

What is the point of the diamond operator () in Java 7?


How to escape wildcard in path when using sudo -u  command

Why isn't this sudo mv operation with wildcard working?


UK Visa: convictions and other penalties

Do traffic offences have to be included on the UK visitor visa application?


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


Find the value of- $\lim_{x \rightarrow -\infty}\sum_{k=1}^{1000} \frac{x^k}{k!}$


Canon DSLR camera for web and graphic design photos

What should I look for when shopping for my first DSLR?


Uppercase the keywords in a string in C# (SQL Beautification with keywords)?

Is there an alternative to string.Replace that is case-insensitive?


How do I resolve unmet dependencies after adding a PPA?


Why don't we percieve chords like we perceive the mix of two light waves?

Why can we distinguish different pitches in a chord but not different hues of light?


My query works (100+ results.) How do I insert them into a new table?

Insert into ... values ( SELECT ... FROM ... )


jQuery "If this image is found add this attribute to mtea tag"

jQuery If this image is found on page add this meta tag?


Portal 2 Peer Review DLC didn't download

How do I actually start the Peer Review DLC on Portal 2?


Why do the derivative of the acceleration (and subsequent derivatives) not play a significant role in physics?

Why don't we consider jerk in physics classes?


Which of the "Which" or "That" should I use?

Difference between 'which' and 'that' in restrictive (defining) relative clauses


How do I overwrite an element from an array?

How do I remove objects from an array in Java?


Reference: What is variable scope, which variables are accessible from where and what are "undefined variable" errors?


previous Eclipse Neon installation does't start on Ubuntu 18.04

A problem installing Eclipse with Java 9 to Ubuntu


Is there a colorspace atlas available in stock somewhere?

Where to buy graphics for cheap that I can use in work that I sell?


sed or awk to print between 2 patterns[excluding the patterns]

Print lines between (and excluding) two patterns


Why don't languages raise errors on integer overflow by default?


.on(click,function) not working for dynamically added content

Event binding on dynamically created elements?


Can someone explain what this does? (malicious)

The Bash command :(){ :|:& };: will spawn processes to kernel death. Can you explain the syntax?


PHP CLI and Bash - change behaviour of PHP keyword


How do senior faculty change universities?


Getting rid of questions with tags in title

Can we prevent titles with an unnecessary tag in them?


What to use instead of Classes in JavaScript?

What techniques can be used to define a class in JavaScript, and what are their trade-offs?


Remove voice memos from iPhone in bulk without iTunes


How can I reverse the 'fn' key on an Apple Keyboard so that F1, F2, F3... are used as default?

Use Function Keys without pressing the fn button in the mac keyboard?


How can $\sum_{n=1}^\infty \frac{1}{n}$ be simplified

Why does the series $\sum_{n=1}^\infty\frac1n$ not converge?


Regex.Replace: How to use $groups followed by numbers

Regex replacement capture followed by digit


The result of sizeof(pointer variable )/sizeof(first element of array ) always shows 2

How to find the 'sizeof' (a pointer pointing to an array)?


Sequence of polynomials converging to $\frac{1}{z}$

Sequence of polynomials which converge uniformaly to 1/z


How do I get TeX Live Utility to recognize the current TeX Live version on my system?


is 65 minutes enough to connect in FRA from JFK to Beirut?

Lufthansa transit at Frankfurt on the way from Chennai to Atlanta, are two hours enough?


Vertically align a child div element with parent div having dynamic height

How can I vertically align elements in a div?


What is the difference between a definition and a declaration?


what is the regular expression for identifying decimal number


Dual Boot Ubuntu/Windows on two separate hard drives

Install on Second Hard Drive with startup boot option?


Can't dismiss the rubber duck dialog if I don't have a mic

Quack Overflow listens even when I say I have no microphone


How to install from an unknown source with my AT&T Galaxy S phone?

How to install from unknown sources on AT&T?


Type dereferencing type-punned pointer will break strict-aliasing rule


Blender Python: Exclude Collections from View Layers

How can I exclude a collection from rendering with Python?


Linear transformations and change of basis


statistical test for 3 response answer satisfied , not satisfied , can't say

What are good basic statistics to use for ordinal data?


android logcat does not display Time, PID etc


Proving that expression is equivalent to the definition of derivative


How to merge multiple PDF files into a single file?


How to reduce or make the space equal of linespacing before and after the $$ something $$

Why is \[ ... \] preferable to $$ ... $$?


Why is the $S_{z} =0$ state forbidden for photons?


Why can't I award a bounty to an existing answer immediately?

I want to award a bounty to an existing answer; should I have to wait 24 hours?


AMD GPU Material in "material preview mode" and "rendered mode", is entirely gray as background. Only outline is displayed


Bounding a series: $\frac{\pi}{2} < \sum_{n=0}^\infty \frac{1}{n^2 + 1} < \frac{3\pi}{2} $

Prove This Inequality ${\pi \over 2} \le \sum_{n=0}^{\infty} {1 \over {1+n^2}} \le {\pi \over 2} + 1$


Looking for a dystopian sci-fi book in which the story is told through various characters' perspectives and people are hosts to some sort of infection

Science fiction book series about aliens that look exactly like humans, protagonist tries to rescue her brother from a government camp ran by aliens


How to convert a String ("95941634.164") to a float


Taylor and Francis Manuscript Status "Under Review"

What does the typical workflow of a journal look like?


Which is correct when using the word staff?


How can I delete a file which filename has non-printing characters


Einstein equation $E=mc^2$: Does it mean an object without mass does not have energy?


Using Ubuntu at the moment. Not a fan so tried to install Windows 8.1 no luck so far

How can I format my active hard drive to NTFS?


Any download command is terminated with this error - "Errors were encountered while processing: linux-image-4.15.0-20-generic"

/usr/sbin/grub-mkconfig: 1: /etc/default/grub: If: not found


Have the tag counters stopped working again?

Tag info not updated regularly on profile?


What is this insect I found in my kitchen?

What kind of insect can this be? This appears to be just a shell after and insect went through a metamorphosis process


Passing a String parameter to a function and change it

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


how to update input type=" text" with javascript after an operation


How to calculate the number of unique 4-combinations for 4 different ranges?

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


error: expected a ";" using std::vector::const_iterator uninformative compilation error?

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


Find all solutions to $x^2\equiv 1\pmod {91},\ 91 = 7\cdot 13$


NullPointer random and unexplained in my method

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


Does cooking a meat that's about to expire lengthen how long it's "good" for?

Does cooking raw meat/poulty extend its shelf life?


Problems with java.net.SocketException: Connection reset


Equivalent Definitions of the Operator Norm


Should I use KUbuntu or Ubuntu 16.04 for KDE Plasma desktop environment?


Get the name of a symbol passed to a function


Getting response from json - how to use in javascript

How do I loop through or enumerate a JavaScript object?


Redirecting logged in and non logged in users


JavaScript: How to make a copy of a object?

What is the most efficient way to deep clone an object in JavaScript?


Installing Ubuntu on a laptop with an SSD


I have enough memory but I can't install anything!

Why can't I install apps when I have enough storage?


How to prove this inequality in Banach space?


Objects disappear when adding boolean modifier


How to get 4od channel4 working [2015, UK]


Remove votes to close question X as a duplicate of Y if question Y is closed as a duplicate of X


Script to move all files in a dir (and subs) to a new folder based on extension

Sort files according to their extensions


Specifying a preprint is "submitted", *to a specific journal*

Drawbacks of making public which journal a manuscript is submitted to, while it is under review?


Exit from script if SSH prompts for password

How to test whether SSH has passwordless access without prompting for password?


Seeking administrative boundaries for various countries?


Where can I find historical data on arrival and departure times of a particular flight?


Combining a toggle function with another function

How do I detect a click outside an element?


Window 8's start screen does not create new process?

Always open new window from start screen


Attempt to invoke virtual method '...' on a null object reference

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


How to select a drop-down menu value with Selenium using Python?


What information does the bottom bar in emacs convey?


How to get the name of the relationship for inner queries in SOQL?

Didn't Understand Relationship - How To Find Child Relationship Name?


How to run executable from shell in ubuntu

How to run scripts without typing the full path?


Grid points inside a domain MATLAB IF statement evaluates TRUE when it shouldn't

Why is 24.0000 not equal to 24.0000 in MATLAB?


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


Behavior of Inner depends on List dimensions?


Function to find minimum element in array

What are the most common pitfalls awaiting new users?


How to run javascript inside browser safely and securely?

How do I safely "eval" user code in a webpage?


Color fill cells if it contains a certain value

How to change row color based on a single cell's value?


I can't figure out why my tables are not being numbered

Beamer Presentation: Figure has no number?


Why is there a controversy on whether mass increases with speed?


Let $\{x_n\}$ be a sequence defined by $x_1 = 3, x_{n+1} = \frac{1}{4-x_n}$, for n $\geq 1$. prove it converges

If $x_1 = 3$, $x_{n+1} = \frac{1}{4-x_n}$ for $n \geq 1$, prove the sequence is bounded below by $0$, above by $4$.


Problems installing Ubuntu 64 bit dual boot with windows 8.1

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


How do I return the response from an asynchronous call?


Programming a numerical method in the functional style


How to remove duplicate values from an array

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


Deployment error: Apex class has Batchable or Future jobs pending or in progress; Schedulable class has jobs pending or in progress

Ghost Schedulable Classes Blocking Deployment


Capturing mobile phone traffic on Wireshark


Cursor is set to move by increments. how to reset to normal?


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


What tools do you use to manage writing co-authored papers?

Simplest way to jointly write a manuscript?


Are collective nouns always plural, or are certain ones singular?


Array formula with more than 255 characters

How to automatically input an array formula as string with more than 255 characters in length into an excel cell using VBA?


The sum of series with natural logarithm: $\sum_{n=1}^\infty \ln\left(\frac{n(n+2)}{(n+1)^2}\right)$

Prove that $\sum_{n=1}^\infty \ln\left(\frac{n(n+2)}{(n+1)^2}\right)$ converges and find its sum


After upgrading from Ubuntu 18.04 to Ubuntu 20.04 I get a black screen

"dev/sda1: clean, ..." This message appears after I startup my laptop, then it won't continue booting


javascript or jQuery doesn't work in dynamically generated content


Name for table with metric_name and metric_value columns


How to solve $x^2 +\left(\frac{x}{x-1}\right)^2 =8$?

Solve the equation $x^2+\frac{9x^2}{(x+3)^2}=27$


can't adjust screen brightness control in ubuntu 12.04?


Editing of revision's title is not applied

Let me add or change edit summary during edit window (grace period)


Filling area for a manipulate Plot_Can anyone advise? Thank you!

Filling a plotted line both below and above the line


What is the heat needed for an isothermal expansion of gas and why do physics and chemistry yield different answers?


Using Cauchy's integral formula to evaluate $\int_0^{2\pi} \frac{1}{a^2 \cdot {\cos}^2(t) + b^2 \cdot {\sin}^2(t)} dt$


How to edit answers to fix syntax errors when "Edits must be at least 6 characters"

How to overcome "Edits must be at least 6 characters"


How to restrict access to subfolders on samba?

Samba - Create Subdirectory Shares with their own permissions


Why do we need sigma-algebras to define probability spaces?


Let $f : G → G_1$ be a surjective homomorphism (also called epimorphism) from $G$ to another group $G_1$. Prove that $f(Z(G)) \subseteq Z(G_1)$.


sudo: unable to resolve host ubuntu-server

Error message "sudo: unable to resolve host (none)"


Sharepoint online/Office 365 Is there a way to get all site collections for a tenant?

What is the REST endpoint URL to get list of site collections?


How can I prove that a flight was delayed by more than 4 hours?

How can a layperson acquire evidence of a past flight's gate departure and arrival times without the airline?


What is the difference between "likelihood" and "probability"?


Passing parameter in batch apex to another batch apex

passing parameter from one batch apex into another batch apex


A mathematical step done by Schrödinger in his solution to the hydrogen atom I need clarification on

How can one derive Schrödinger equation?


A word for a car that always breaks down and may need to be replaced


node.js spits out nothing but three dots

node example.js and three dots, what's next?


Prototyping with Javascript Constructors


How to prove $\left|\sqrt{2} - \frac{m}{n}\right| > \frac{1}{3n^2}$ inductively?

Problem with inequality: $ \left| \sqrt{2}-\frac{p}{q} \right| > \frac{1}{3q^2}$


If $u$ is a harmonic and $g$ is complex analytic, then why is $u(g(z))$ also harmonic.

Composition of a harmonic function with a holomorphic function is still harmonic


Functions that are their Own nth Derivatives for Real $n$


A pencil approach to find $\sum \limits_{i=1}^{69} \sqrt{\left( 1+\frac{1}{i^2}+\frac{1}{(i+1)^2}\right)}$


How to check the current mouse button state Using Javascript


What exactly is NASA's proposed mechanism for "propellantless" "EM Drive" propulsion?

What are the proposed theoretical explanations for the EmDrive?


Android : ZoomIn and ZoomOut using Canvas

How can I get zoom functionality for images?


Scheduled reboot with crontab didn't go ahead. Why might this be?

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


What determines the height at which a superconductor hovers?

Effect of strength of magnetic field on the height of a levitating superconductor?


How to install texlive on ubuntu and how can I locate texlive after installation?

How to install "vanilla" TeXLive on Debian or Ubuntu?


how to show logged in members username in wordpress content

How do I display logged-in username IF logged-in?


Is the statement grammatically correct or not: "How can I get to watch a movie for free?"

Is it better to say "How do I..." or "How can I..."?


Restore Verify Only option vs Manual Restore

Understanding the impact/risk of turning off "verify backup integrity" on SQL backup


Persisting lack of clarity on the operation of the Citizen Patrol badge

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


How to check if a macro value is empty or will not create text with plain TeX conditionals?


how can I pass a variable into a new Runnable declaration?

How can I pass a parameter to a Java Thread?


Book identification - Genius girl through another dimension

Children's book with "square triangles" in parallel universe?


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


"debconf: DbDriver "config": config.dat is locked by another process: Resource temporarily unavailable" while installing packages


If f is analytic on the simple closed contour C, then $\oint_C(f' (z))/((z-z_0 )dz= \oint_C f(z)/(z-z_0 )^2 dz$


Can you check the instanceOf an object dynamically?

How to get the Runtime-Type of an Object dynamically (for Primitive Data Types and SObjects)


What exactly are the numbers in logcat's GC_CONCURRENT saying?

What do GC_FOR_MALLOC, GC_EXPLICIT, and other GC_* mean in Android Logcat?


Proving an $m\times n$ matrix has left and right inverse


Change timer interval from another form via radio buttons


Why can't I install bc on my Raspberry Pi?

E: Package '' has no installation candidate


Principal axes, what are they and how to decide them?

Making sense of principal component analysis, eigenvectors & eigenvalues


How can I concatenate two arrays in Java?


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


How to define a bijection between $(0,1)$ and $(0,1]$?


Creating MXD From Standalone ArcPy Snippet?

Seeking Python script for creating .mxd files?


Is there a LaTeX/TeX preprocessor/inliner that replaces only selected macros with their definitions?


Command to delete a file which is two days older

Batch file to delete files older than N days


[Firmware Bug]: TSC_DEADLINE disabled due to Errata - what should I do about this?


Assume that $f : A \to A$ is a function such that $\forall x, y \in A,\|f(y)-f(x)\|=\|y-x\|$. Prove that $f(A)= A$

A isometric map in metric space is surjective?


NSDateFormatter is giving one day ahead date


Log or square-root transformation for ARIMA


getting the row corresponding to the max of other row

how to select only row with max sequence without using a subquery?


Where can I find an old version of dropbox app?


How do I resolve unmet dependencies after adding a PPA?


Apt update failed because public key not available


"Hidden layer sizes" vs "Hidden layers sizes"


Google Glass Charade Sample Error: Module 'gdk-charades-sample' production: java.lang.NoClassDefFoundError: com/android/resources/ResourceFolderType

Why am I getting a NoClassDefFoundError in Java?


What's the proper way to check a checkbox by variable value?

Setting "checked" for a checkbox with jQuery


"About this mac -> Storage" show different values than "Macintosh HD"


Is it: My apples and orange are/is wrong?


Every irreducible component of $X$ has dimension at least $n - r$.

Proving Hartshorne's Exercise I-1.9 by using exercise I-1.8


Why does cycles render take forever to render?

Why are my render times 30+ minutes, but other people's are ~3 minutes?


$x_1=\sqrt{2}$ and we have $x_{n+1}=(\sqrt{2})^{x_n}$. Find out the limit.


Will there be object slicing in this case?


Reading data from an HID device from userspace in OSX

Reading and writing to USB (HID) interrupt endpoints on Mac


How to get an product limit in a category using php mysql?

How to get the latest 2 items per category in one select (with mysql)


How to make an empty space between Expandable ListView groups

android expandablelistview how to set space between groups items


Analyzing a non linear circuit with two sources

Problems with analyzing a simple, non linear circuit


How do I change page title based on heading?

How to dynamically change a web page's title?


Get the cartesian product of a series of lists?


2D array elements not changing when assigned a new value?

trouble understanding what elements are passed when passing multidimensional arrays to functions


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


What is the point of the diamond operator () in Java 7?


PyQGIS - How to import WKT string from a CSV to a polygon shapefile?

Create a script to add delimited text layer in QGIS


Does SE's search engine support punctuation?


mysqli_fetch_assoc() expects parameter 1 to be mysqli_result, boolean given

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


Is it mathematically impossible to incorporate the space curvature into the equations of motion and gravity?

Can general relativity be completely described as a field in a flat space?


Hypothesis testing for two exponential samples

GLR Test for 2 samples from exponential distributions


use as a single variable for GET and POST parameters

php function for collating external variables into a single object regardless of GET or POST


Write a method isMultiple that determines


jQuery change function not logging to console

Event binding on dynamically created elements?


website url validation with proper RegEXP for all types of domains for all countries

What is the best regular expression to check if a string is a valid URL?


Why can't I store derived class object in an ARRAY of base class and then dynamic_cast it? C++


Compare 2 excel file large data write result with Highlight cellstyle sxssf JAVA

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


How do I use Arial in math mode alongside the default font settings?

Typeset mathematical symbols also in sans serif font?


How to send emails and avoid them being classified as spam?


Why are FTP connections read-only when I use "Connect to Server..."?

Built in FTP client (cmd + k) - can't upload files (Mavericks)


Simplify this equation if $x$ is negative


How can I use variables in the LHS and RHS of a sed substitution?


Length of diagonal compared to the limit of lengths of stair-shaped curves converging to it


How do I install an Nvidia driver in VirtualBox?

Does it make sense to upgrade the graphics driver when running Ubuntu on virtualbox?


How do I put character &#8226 ::before an element?


Java Error with Audio, trying to play sounds


Evaluate $\lim_{n \rightarrow \infty } \frac {[(n+1)(n+2)\cdots(n+n)]^{1/n}}{n}$

Evaluate $\lim_{n \rightarrow \infty} \frac {[(n+1)(n+2)\cdots(n+n)]^{1/n}}{n}$


Thiessen polygons of sub-districts to lie within district boundaries

Thiessen Polygon delineation within a Feature


python regular expression replacing part of a matched string


How to simplify the summation kk! without using induction?


Will there be any problem re-entering the US with a B-1/B-2 visa after four months away?

Repeated visits to the US on a multiple-entry tourist visa. Will I have any problems?


Equivalent of Linux `touch` to create an empty file with PowerShell

Windows equivalent of the Linux command 'touch'?


Is it good to save image as datauri inside mysql


Find the minimum value of $\frac{4}{4-x^2} + \frac{9}{9-y^2} $

Minimum value of $\frac{4}{4-x^2}+\frac{9}{9-y^2}$


Does quantum chromodynamics imply continuous space?

Does Quantum Mechanics assume space and time are continuous?


Are Images from i.stack.imgur.com permanent? AKA "Why are my pictures gone?"

Intermittent Failed to upload image; imgur is rejecting the request


Install Sierra on Macbook Pro shipped with High Sierra

New Macbook Pro - remove "high sierra", install "sierra"


jquery catch event from a generated element

Event binding on dynamically created elements?


How do you add integer arrays to an arraylist?

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


Is there a Relationship between sum and sum of reciprocals?

Is there any known relationship between $\sum_{i=1}^{n} f(i)$ and $\sum_{i=1}^{n} \dfrac {1}{f(i)}$


Acer Aspire ES1 311 freezes regularly on Ubuntu GNOME 15.10

System freezes completely with Intel Bay Trail


How to compress a file using java on hdfs


"95% of confidence intervals calculated from these random samples will contain the true population mean"

Why does a 95% Confidence Interval (CI) not imply a 95% chance of containing the mean?


Why is $SU(3)$ and not $U(3)$ the correct gauge symmetry?


If $x \leq y \leq z$, and both sides of the equation are defined, then $\frac{\sin x + \sin y + \sin z }{\cos x + \cos y + \cos z} = \tan y.$

If $x$, $y$, $z$ are in arithmetic progression, show that $\frac{\sin x + \sin y + \sin z }{\cos x + \cos y + \cos z} = \tan y. $


Is this a Beamer with Animation on Tables bug?


Two modems two seperate lines to equal one speed

How can I unite two LAN connections on one network?


Expected Value of the sum of random variables


“He is small enough to walk.” But baby wasn't walking so why didn't they use “small” instead of “small enough”?


How to draw Venn diagrams (especially: complements) in LaTeX


Proving that the estimate of a mean is a least squares estimator?


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


Array has duplicate values with different id, how to remove duplicates

How to remove duplicate values from an array in PHP


Xcode 4.2 - declaration of '...' will not be visible outside of this function warning


How to fix 'android.os.NetworkOnMainThreadException'?


Why doesn't alias foo='echo "This is a quote: \'"' work?

Wrapping a command that includes single and double quotes for another command


If $I$ and $J$ are ideals in a ring $R$ with $1$ such that $I+J = R$, show that $I^m$ and $J^n$ are co-maximal for all $m,n \in \mathbb{N}$


Intuition for Quantum Mechanics (if it exist!)

What is a wave function in simple language?


How to use prepared statements in queries with an IN clause in PHP

Bind multiple parameters into mysqli query


Number of possible rectangles in a grid using combinatorics


How can I avoid to return HTML markup for access denied?

Use JSON instead HTML for access denied on some custom paths


What does the tilde before a function name mean in C#?


is it possible to insert frametitles in toc

Is there any way to produce List of frames with beamer?


For which values of $x$, $0$°$≤x \cos x$?

Sine is algebraically less than cosine in given interval.


Why Validation.HasError must be in brackets?

What do parentheses in binding paths mean?


Evaluate $ \int_{-\pi/2}^{\pi/2} \frac{\cos(x)}{1+e^x} dx$

Showing that $\int\limits_{-a}^a \frac{f(x)}{1+e^{x}} \mathrm dx = \int\limits_0^a f(x) \mathrm dx$, when $f$ is even


For which $f,g \in k[t]$, $k[f,g]$ is integrally closed?


Finding the equation of the circle passing through two points $(4,4)$ and $(-2,-2)$ with radius $4$

Find the equation of the circle passing through two points (4,4) and (-2.-2) with radius 4


Can you publish an app (Play Store) that contains an existing database?


Prevent apt-get update from getting i386 packages?


Error in master's thesis, I do not know what to do

Consequences of a master thesis with errors


Bitlocker doesnt allow to key in password

Why does BitLocker want a recovery key instead of a password?


Solve $y’ = \frac{2-xy^3}{3x^2y^2}$ using integration factor

Solve $y’ = \frac{2-xy^3}{3x^2y^2}$ using Bernoulli form


Are upvotes on competing posts counted per question or per answer for Sportsmanship?

Voting for competing answers (Sportsmanship badge)


How do I install VMWare Workstation on Ubuntu 19.04?


AC mains wire finder + live wire equivalent circuit

How does a non contact voltage tester work?


What's the word to describe someone who is trying to appear dumber than they actually are?

A word for a worldly wise person who pretends to be naïve?


How to get the correct result when I use re.compile(pattern), if the pattern contains some special characters, like, (),?


Why can't I implement a custom setter and a custom getter at the same time in Objective-C?

property not working with getter AND setter


Why is a certain boolean false though it should be true?


Two installations of MMA 10.0.1.0 differ in behavior


Bash read backspace button behavior problem


How can I activate a Desktop Environment?


Find sum of iterations of variable in for loop


Is there a way to teleport to a type of specific block in Minecraft in Windows 10 Edition?

I lost my house in minecraft. How can I find it?


How to detect which Android apps use its permission to send SMS messages?

Determine list of permissions used by an installed application in Android


I got error while installing wine in ubuntu 18.04

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


New profiles have a description I don't want

Sync accounts with different SO/SE profile (not the oldest)


camera doesn't show an object. how can be solved it?


What happens to print quality if I double the DPI at the same dimensions?

I need to print an image at a certain size. What dimensions and resolution should I use?


How can I get the amount of available memory portably across distributions?


Add one day to given date in Java and return in specific date format

How can I increment a date by one day in Java?


If I need to pass in something heavy to an object, should I just pass in by pointer or by copy?


Determining a string has all unique characters without using additional data structures and without the lowercase characters assumption


Can we write the empty set as a union of open intervals?

Why is the empty set considered an interval?


run executable at startup with admin permission

How to run a program as an administrator at startup on Windows 10?


Scripting Language for Java and its uses?


How does a new user begin using Stack Overflow/Stack Exchange?


Failed to execute child process "net" (No such file or directory)


Why are my shapes being warped when scaled in Illustrator

Preventing Illustrator CC vector objects distorting when scaled


Need ios app for read and mark pdf documents

Is there an iPhone App for reading PDF files?


iPhone no message alert sound when near MacBook


Optimize webserver to handle huge load spikes

Optimize application to handle huge spikes


How do I make sample photos for cameras/lenses?

What are good test shots for finding out the capabilities of a camera?


Connection between field and the frobenius homomorphism

Separability by surjectivity of Frobenius Endomorphism


Word for "something that is required but cannot be achieved"?

Word for a task which is flawed or doomed to failure but which you have to do anyway?


How to convert numbers between hexadecimal and decimal


Does Stack Exchange need subsites for news submission?

Can we discuss topical news on Stack Exchange sites?


How to add permission entries to visual svn server in C#

SVN Rights Management Tool using Windows Authentication method


C# Check if any int in list matches any int in another list

How to find if an element of a list is in another list?


Check whether a file uses CRLF or LF to end lines

How to test whether a file uses CRLF or LF without modifying it?


If 3 divides $n$, then 3 divides the product $n$($n$+1)($n$+2). Why is this?


Prove that if $\gcd(a,b)=1$ and $a|mb$ then $a|m$.

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


How to remove Ubuntu and put Windows back on?


How can I move a discussion to chat before being prompted?

Is it possible to import comments into a chat room without the link appearing?


How to create a 2D overlay over a 3D game? (LWJGL/OpenGL)


if I have a 414 h in NY can I also contribute to a roth ira?

I have a 414(h) pension plan as a teacher in New Jersey. Am I permitted to also contribute yearly to an individual Ira?


Specific number of item in OpenFileDialog


Using arcpy.da.editor on a transactional version raising errors

Debugging RuntimeError: workspace already in transaction mode from arcpy.da.UpdateCursor and ArcSDE feature classes?


auto enter password for `passwd ` from script?


Pop up option are not popping up after snipping the area


Only navigator shows changes in Illustrator CC 2015


Dell XPS 13 9350 with Ubuntu 15.10 - Touchpad freezing, jumping

Dell Inspiron 7347 - Inactive cursor with my touchpad on UBUNTU 14.04


AMD GPU Material in "material preview mode" and "rendered mode", is entirely gray as background. Only outline is displayed


Could anyone please tell what the lsof mean is?

How do I deal with a compromised server?


Are $1$ and $3$ the only numbers of the form $2^n-1$ that exist in the Fibonacci sequence?

Prove: the intersection of Fibonacci sequence and Mersenne sequence is just $\{1,3\}$


Homeomorphisms of product spaces: an example

Does $X\times S^1\cong Y\times S^1$ imply that $X\times\mathbb R\cong Y\times\mathbb R$?


How can I install ubuntu-restricted-extras?

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


java.lang.NullPointerException in android Camera capturing

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


android.content.Context.getSharedPreferences(java.lang.String, int)' on a null object reference


At what age should my baby be expected to support her own head?


a bounded analytic function on both real and imaginary axis

Does there exists an entire function $f: \mathbb C \to \mathbb C$ which is bounded on real line and imaginary line?


Homepage "active" questions sorting glitch

Ajax loading seems to be more updated than the actual home page


Were all Force wielders born from Force-sensitive parents?

Are Force Sensitivity and Blood Lines Connected?


I can see /bin/bash folder but why the command throws error

Not able to execute a .sh file: /bin/bash^M: bad interpreter


Why is this chunk of code giving me a NullPointerException?


After iterating through a list in Python, print out remainder

How do you split a list into evenly sized chunks?


How to get all possible values of an enum in java? (not knowing the specific Enum)


how to identify UUID conf or ordinary dev conf from fstab


Burning down the close queue has blocked me from flagging

Reset flag declined warnings due to Close vote burn down


Story or Book that features the Tree of life from the Garden of Eden

Novel where a man is paid to travel to a planet inside a metallic sphere


Audits doesn't take into consideration the filter


Visa expires before I-94 admit until date

Travel to US two day before B1 visa expires


Gnome login screen "loops" after computer has slept


On Xubuntu 20.04 is there an option to beep while toggling Caps Lock and Num Lock?

Can I make my Ubuntu make sounds when I press Caps Lock etc.?


How to find $\lim\limits_{n\to\infty} \dfrac{1!+2!+...+n!}{n!}$

How to find $\lim_{n\to\infty}\frac{1!+2!+\cdots+n!}{n!}$?


Multiple similar forms using the same submit function

Event binding on dynamically created elements?


okay a very common problem is the number of arrangements of letters such that no two vowel letters are adjacent

The number of ways to order 26 alphabet letters, no two vowels occurring consecutively


How to get Excel to graph multiple series where series are "mixed" in a table?

Excel scatter plot with multiple series from 1 table


Solaris 11 list of supported USB wireless cards


Example of primitive function which isn't Riemann-integrable on a closed interval [0,1]

What is an example that a function is differentiable but derivative is not Riemann integrable


How would you calculate the Tangent without a calculator?

Mental estimate for tangent of an angle (from $0$ to $90$ degrees)


android - Nullpointer error in ArrayList

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


What is the best way to root a 2012 Nexus 7 running 5.1.1 Lollipop?


How to .remove all matches in a Python list?

Remove all occurrences of a value from a list?


Any bash magic to reference the previously typed parameter?

How to repeat currently typed in parameter on bash console?


Design Pattern: Singleton and AbstractFactory

What are drawbacks or disadvantages of singleton pattern?


java.lang.NullPointerException: Attempt to invoke virtual method 'int com.x.x.Helper.SharedPref.GetInt(java.lang.String)' on a null object reference


IOS Swift, difference between someString! vs someString?

Swift variable decorations with "?" (question mark) and "!" (exclamation mark)


how to find dynamic dom loaded time from server response in chrome?

How to measure time taken by a function to execute


How can i change IDE color theme of Mathematica Wolfram?

Where can I find a dark stylesheet for mathematica?


How to manage the leverage browser caching for third party JS files?

Leverage browser caching for Facebook, Google+, or other 3rd party resource files


Non-static variable this cannon be referenced from static context

Non-static variable cannot be referenced from a static context


why is the faces on my model darker than the others?


Depletion-mode P-channel MOSFET availability?

Depletion Mode MOSFET Modelling in SPICE


Can a particle have a speed exceeding that of a photon in vacuum?


How to implement reCaptcha for ASP.NET MVC?


How to delete duplicates in SQL table with Primary Key


K-Means clustering for mixed numeric and categorical data


Show map is norm-preserving and determine Eigenvalues

Show norm preserving property and determine Eigenvalues


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


How to assign different faces of the same object different materials?

Add different materials to different parts of a mesh?


Can we use 'be' after 'wish' to express a wish?

Is it correct to say 'I wish some magic happens'?


Is there a word to describe an offensive term reclaimed by the offended group

English word for taking a derogatory term and owning it with pride


Show null pointer error while saving in database

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


HTML Charset UFT-8 does not work on every page


I'm getting NullPointerException when trying to access a textbox element which I'm referred from POM file. Please help me to resolve this error


\parindent only works for very few paragraphs in latex

When to use \par and when \\, \newline, or blank lines


How does this PIC board achieve RS-232 communication without a line driver?


How do you create custom terminal commands

How can I create a custom terminal command (to run a script)?


Steam not displaying text on wine 1.5 running on Ubuntu 12.04


Can PHP PDO Statements accept the table or column name as parameter?


How Do I Find my /Mods folder in minecraft

How exactly do I install Minecraft Mods and what is Forge?


different sizeof structures containing similar data

Why isn't sizeof for a struct equal to the sum of sizeof of each member?


How can I sort an NSMutableArray alphabetically?


Bash: How to fake an input file in arguments neccessary for a command


I'm trying to find the sum of primes below 2 million in Java

Sum of primes below two million. Sieve of Eratosthenes


For two n$\times$n matrices A and B, if AB=I then BA=I?


In Python 2.5, how to print current timestamp in full ISO 8601 format

Python - Convert string representation of date to ISO 8601


Find the value of a function that satisfy $f(x+1)=f(x)\cdot f(y)$, for all $x,y\in\mathbb{R}$.

How do I prove that $f(x)f(y)=f(x+y)$ implies that $f(x)=e^{cx}$, assuming f is continuous and not zero?


Why my computer boot straight into Windows 7 and not boot options?

Can't boot into Ubuntu in Windows 10 / Ubuntu dual boot


android:display captured image in gridview

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


does jQuery Validation plugin not work with input type number?

Jquery Validation Plugin digits that aren't required not working


Access taxonomy fields on page.html.twig

print custom image field for taxonomy page (page--taxonomy.html.twig) template


Users with default picture and grayed out name

What does the silhouette user icon mean?


Characterizations of the $p$-Prüfer group


Broken icons in Windows when doing a search

Windows Metro apps have wrong icon in search UI


Finding $\mathbb{E}(X|X<Y)$ where $X,Y$ are iid $\exp(\lambda)$ random variables

How to find $\mathbb{E}(X\mid\mathbf{1}_{X<Y})$ where $X,Y$ are i.i.d exponential variables?


How to show that the limit $\lim_{(x,y)\to(0,0)}\frac{x^3+y^3}{x-y}$ does not exist?

Non-existence of $\lim \limits_{(x, y) \to (0,0)} \frac{x^3 + y^3}{x - y} $


Why does the C++ map type argument require an empty constructor when using []?


Are L-shaped and T-shaped Magsafe 1 interchangeable?

Can I use one charger for all MacBooks from years 2008 to 2013?


Convert an image to grayscale in HTML/CSS


What does "Package  has no installation candidate" mean?


Is there a term to describe inquisitiveness with a negative connotation?

What is a good word(s) for someone who excessively asks for information that they have no business knowing?


Updated to Ubuntu 18.04 and Wi-Fi is now very weak - RTL8723BE


When requesting a donation, is it better to have a prefilled button or enter their own value?

When soliciting donations on a website, should you start by providing a box for the donation amount?


Need to proof by induction (calculus1 n and n+1)


How to remove unwanted default bookmarks in Nautilus?

How do I remove 'Places' entries from the Nautilus sidebar?


Error message "sudo: unable to resolve host (none)"


Java : Thread with or without anonymous runnable

"implements Runnable" vs "extends Thread" in Java


How to change the name of document elements like "Figure", "Contents", "Bibliography", "Appendix", etc.?


How to get matrix $A$ from $A^\top A=B$ with given symmetric matrix $b$?


How do I install Ubuntu from an USB drive / create a live USB-stick in Windows?


Show that if F is a finite field, then $F^F=P_F$.


Why do parallel plates create a unifrom field?

Why is electric field of an infinite plate constant at all points?


Why aren't all functions virtual in C++?

Is there any reason not to make a member function virtual?


Why are flights for shorter trips more expensive than for long ones?

How do airlines determine ticket prices?


UK visa refusal on V 4.2 a + c (and sometimes 'e')


Question has much higher identifier number than expected

What are these mysterious gaps in the progression of post id?


Expected Number of Coin Tosses to Get Five Consecutive Heads


How do you determine the winner of a hand?


how to tell which statistics SQL server references in query

Check which statistics were used in query optimization


Are the words "merry", "marry" and "Mary" pronounced the same?

How are 'marry', 'merry', and 'Mary' pronounced differently?


How Prime[n] is implemented and why is that bounded?


GridLines for a coordinate system with a particular basis


Expected value and variance of trace function


Elements in 2d list repeated, while changing one value?

List of lists changes reflected across sublists unexpectedly


CSS bottom: 0; position: absolute; parent position: relative; not working

How do you get the footer to stay at the bottom of a Web page?


Why are the bits of a std::bitset in reverse order?

Why does std::bitset expose bits in little-endian fashion?


Can I just sign up for all Stack Exchange sites?

Can I have a common account across the Stack Exchange family of sites?


How to check available time for add new time schedule?

What is a simple and efficient way to find rows with time-interval overlaps in SQL?


Given a range of dates, how to capture rows that has at least one of those dates in another range of dates?

Are there any MySQL functions to get all rows with with a start or end date that fall between a given start and end date?


If I run along the aisle of a bus traveling at (almost) the speed of light, can I travel faster than the speed of light?


How can you create an infinite looping GIF using After Effects?


Align does not align equation vertically correct

Multicol: why do columns not align properly?


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


can WiX be used to create windows service for any console application

Wix installer to replace INSTSRV and SRVANY for user defined service installation


What resolution should a large format artwork for print be?


In inmargin innertheme, how to customize the block title width in the sidebar?

How do I increase the inmargin in beamer?


How to add the only user on a Debian system back into the sudo group?

How to change the forgotten root password?


How to change parent item state to active in angular-ui-router

Angular UI Router: How do I get parent view to be "active" when navigating to nested view?


Pronoun question: referring to inanimate objects as 'he' or 'she'


Contents of spam questions not hidden in mobile view

Spam and rude/abusive questions aren't hidden behind revision history link on mobile web


How do I pass a variable into an FTP connection?

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


Is $(\Bbb{Q},+)$ isomorphic to $(\Bbb{Q}_{>0},\cdot)$?

Prove that the additive group $ℚ$ is not isomorphic with the multiplicative group $ℚ^*$.


/var/log/syslog constantly logging errors, growing at 1 MB/s


How to check if a String contains another String in a case insensitive manner in Java?


Using the same word for twice in a single sentence

Repetition of the same word in a sentence


What is the difference between a URI, a URL and a URN?


Regex to include product category pages but not product pages and pages without parameters


Right Aligned labels lists of non-math text


Freezing Gridview Header in Mozilla Firefox


If $f$ is analytic and $3\operatorname{Re}f+2\operatorname{Im}f$ is constant, is $f$ also constant?

Show a given analytic function is constant


Qubit measurement is followed by instructions. Error code: 7006

Trying to build a circuit for quantum teleportation on IBMQ I get ERROR_RUNNING_JOB error


Is it possible to Pivot data using LINQ?


ListView in Fragment not saving scroll position on popBackStack

ListView within fragment cant save scroll position


How do I forget an old "Hidden Network", which is my iPhone wifi hotspot?

Windows 10: How to remove unwelcome hidden networks


Why are "malign" and "malignant" pronounced differently?

Is there a reason why "gn" in "reigning" is pronounced /n/ while in "regnant" it is pronounced [gn]?


Error Message System.QueryException: List has no rows for assignment to SObject :Stack Trace Class.CloneContractCtrlr.: line 18, column 1


Focus issues even when using Single-Point

How do I diagnose the source of focus problem in a camera?


Does the file name of my XML sitemap matter? An SEO tool complains when it is not in the default location

Does name of sitemap file that Wordpress generates matter?


Median of 3 partitioning taking more time than quicksort in java

Median of three partitioning taking more time than standard quicksort in java


May I have some help understanding the intricacies of the List. Sort Methods?


Is there a known problem with ESTA form online?passport validity?

ESTA with UK passport (valid > 10 years)


The close dialog says there are two off-topic votes, but none of the off-topic reasons have votes next to them


Fast recursive grepping of svn working copy


How SCP Hang issue resolve after changing MTU Value?

Why does SCP hang on copying files larger than 1405 bytes?


Use "have" or "has" any/anyone/anything in the question?


Markdown links to StackExchange sites and special actions

Add data.SE style "magic links" to comments


What statistical analysis? Three continuous independent variables w/ one categorical dependent

Ordinal dependent variable with continuous independent variables


What is the Taylor series of a square root?

Taylor series of $\sqrt{1+x}$ using sigma notation


Hi i get an error and i think it may be a null pointer error at line 114 but i dont know how to solve it

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


Check linear and differential cryptanalysis of a new block cipher

What are recommended, general strategies to start block-cipher design and/or analysis?


How to limit user to only cat & exit commands?

How can I restrict the normal user to run only limited set of commands in RHEL?


What happens when you get items for leveling up but your backpack is already full?

What happens with excess items if my bag is full, and what should I do to avoid losing items?


embed ttf as embeded resource: can't reference it

C# : Using an embedded font on a textbox


Why do I get this strange floating list of services instead of win 7 Task Manager?

Why does my Task Manager window outline keep disappearing?


How to correct flat shading on textured face with holes cutted?

Applied boolean modifier leaving shading artifacts with flat shading


Computing the limit of an alternating series,


How to convert Excel sheet column names into numbers?

What is the algorithm to convert an Excel Column Letter into its Number?


Black holes and positive/negative-energy particles


Permission denied for accessing to data/data file in android

Why do I get access denied to data folder when using adb?


Could not find gem 'mysql2 (>= 0) ruby' in the gems available on this machine


Ubuntu 16.04 Steam only runs from terminal


Event binding on dynamically created elements?


What is the use of percent signs (%) at the end of lines? (Why is my macro creating extra space?)


Reference for very basic books in Number theory


NullPointer Exception on setAdapter() when tapping Navigation Drawer

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


Is there a two-dimensional random variable whose CDF is continuous, but whose marginal CDFs are discontinuous?

If X and Y are continuous random variables, then the random vector (X,Y) is a continuous random vector?


Why did Obi-Wan wait years after his death to tell Luke to go to Dagobah to find Yoda?

Why did Obi-Wan Kenobi choose that moment to appear to Luke?


javax.el.PropertyNotFoundException: Property 'foo' not found on type com.example.Bean


Difference between lexicon, vocabulary and dictionary


No Package name given for dpkg: package is in a very bad inconsistent state;

How to fix "Package is in a very bad inconsistent state" error?


testing significance among distributions

statistical significance among three distributions in R


How to skip lines with "#" symbol in Fortran 90?

Reading comment lines correctly in an input file using Fortran 90


UK Citizen - About to Sell Microsoft Store Apps - What is Effectively Connected Income

Do I have to pay taxes in the US if my online store sells to US customers even though I don't live in the US?


How can a green laser be reflected as orange?


How do I find out screen resolution of my Linux desktop (Ubuntu) from C# program running with mono?


Sun Grid Engine Qmon not working on Ubuntu 14.04 LTS

Sun Grid Engine's qmon -- "Cannot convert string..."


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


Will a Schengen visa allow an Indian citizen to Mexico?


SQL-Like Inner Join on IDs in Two Layers in QGIS


I got this "glass" effect after i applied a material on some branches in blender 2.91

AMD GPU Material in "material preview mode" and "rendered mode", is entirely gray as background. Only outline is displayed


Show that the phi function is multiplicative $\phi(mn) = \phi(m)\phi(n)$

What's the proof that the Euler totient function is multiplicative?


How to collect all script tags of HTML page in a variable


The close dialog says there are two off-topic votes, but none of the off-topic reasons have votes next to them


How to use keyword `where` for multiple generic types?

Generic method with multiple constraints


How to measure smoothness/roughness of a time series

How to measure smoothness of a time series in R?


How to reap error estimate from NIntegrate


What do light wave oscillations look like?

What does a light wave look like? (3D model)


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


Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?


Automatic Logout after 15 minutes of inactive in php


Can I extend a class using more than 1 class in PHP?


How can I add a texture to a specific face?

How do you apply a texture to select faces of a mesh


What has replaced the deprecated __proto__ in JavaScript

__proto__, when will it be gone? Alternatives?


When does sum to infinity starts getting negative?

How does the sum of the series “$1 + 2 + 3 + 4 + 5 + 6\ldots$” to infinity = “$-1/12$”?


Review queues in the dropdown menu have no indicator even when there are reviews


Repeating "the" with each item separated by "or"

Is it necessary to use "the" multiple times?


How can we get rid of misspelled and unused (or "zombie") tags?


Where do I put item tags on items inside a chest or your inventory?


Rename file with the name from a variable

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


Show that aH and bH contain the same number of elements in G

Proving Cardinality of Cosets in Abstract Algebra


Prove that there is no polynomial with integer coefficients such that $p(a)=b,\,p(b)=c,\,p(c)=a$ for distinct integers $a,b,c$


Find all real solutions to the equation$4^x+6^{x^2}=5^x+5^{x^2}$


Scale figure to remaining page height in ConTeXt

How to define a figure size so that it consumes the rest of a page?


Story about boy raised by two necromancers/warlock/dark wizards

Book (online?) where one common (and powerful) form of magic consists of making vows


What is the meaning of -n in IF statement

Usage of -n and -z in test built in - Bash


D&D 3.5 Wizard Prestige Classes. What are the best options?

How to optimize a Gishy [Fighter/Mage] Character?


Electrodynamics and the Lagrangian density

Retrieving Maxwell's equations from the minimum action principle


Angular momentum eigenfunctions and commutators

Eigenspaces of angular momentum operator and its square (Casimir operator)


Can't connect to Centos 6.9 after update to OpenSSH 7.6 on this server

How to enable diffie-hellman-group1-sha1 key exchange on Debian 8.0?


Can use this expression "Couple questions" for more than two questions ?

What does “a couple” mean to you, and what does “a few” mean to you?


I think I pressed something by accident, and now my regular movements are jittery.

Cursor is set to move by increments. how to reset to normal?


Is there a difference between foo(void) and foo() in C++ or C?


When does SQLiteOpenHelper onCreate() / onUpgrade() run?


How to Programmatically Detect Interop-unlocked Windows Phone devices?

How To check Windows device is rooted/jailbrake or not programatically?


A prettier way of on how to prove the identities

How can I understand and prove the "sum and difference formulas" in trigonometry?


PHP: Unexpected variable comparison result. Possible rounding issue


Detect malicious script or reason creating lots of smtp connection

How do I deal with a compromised server?


Can we obtain interference pattern with single electron/photon in Young's double slit experiment?


What does this line in the Dope Sheet mean?

What do the bars between keyframes mean?


How to recover the text in url and convert text back?

How to unquote a urlencoded unicode string in python?


Do C++ compilers generally "optimize" malloc and free to new and delete?

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


How and why do you use an image histogram?


Java Industry Standard: Arrays/ArrayLists/Linked Lists

When to use LinkedList over ArrayList in Java?


Is Gradient Boosting Regression Tree able to learn linear models


How to ensure different colors for surrounding polygons?

How to apply the four colors theorem in a polygon map in ArcGIS/ArcToolBox automatcally?


iOS7: Saving settings to file doesn't work on device

File write with [NSBundle mainBundle] fails


Looking for an understanding of Toroidal Moments

Are neutrinos affected by electromagnetic forces?


Run a batch file in a completely hidden way


Is it OK to re-submit my own work to the same class that I am retaking?

Can I hand in an essay which I have written last year, but not as part of a course?


Story about a man bringing nanomachines from the future to save his lover

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


Functions that are sets of all function - proofs


Generalizing the Chinese remainder theorem with fibred products

Canonical map $R/(I\cap J)\rightarrow R/I\times _{R/(I+J)} R/J$ is an isomorphism


I don't want other administrator to change my password


After removing python3.5 from dual boot Ubuntu 16.04.03 (Along with W10), not able to access ubuntu now

Removed Python 3 and now Ubuntu Software Center, terminal and other applications don't work


Customizing the height of the cells in a table


Superimposing architectural models onto street photographs

How to render a background image in 2.8?


How to reverse a vector of strings in C++?


Will my coffee end up colder if I wait to put in the milk?

Does tea stay hotter with the milk in it?


Could all the energy in all the photons in the universe account for dark matter?

How much does electromagnetic radiation contribute to dark matter?


Forest: parent node positioned incorrectly in relation to children


Incompatibility: biblatex / tableofcontents / tikz / springer class?

Cite fails after `\tableofcontents` in `svjour3.cls` when `todonotes` is loaded


Ubuntu 20.04 - screen keeps rotating on its own

How to turn off screen rotation in Ubuntu 18.04 LTS?


What's the @ in front of a string in C#?


Disabling Microsoft Word's Formatting Pop-Up

How to hide text formatting popup (Mini Toolbar) in Microsoft Word 2007


Strange side-effect in beamer: Text in columns in titlelike color after \maketitle

Strange interaction between beamer and tcolorbox


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


Having problems with listings and UTF-8. Can it be fixed?


Regular Expression to get Street Name and Number Separately

Regex in Pattern.compile to split BillingStreet into custom street and house number field


Why can't I assign to 3d lists properly?

List of lists changes reflected across sublists unexpectedly


Can the Shepherd druid's "Faithful Summons" feature be triggered by losing all HP in Wild Shape?

Does a druid count as hitting 0 HP before reverting out of Wild Shape?


Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'xx/vscode stable InRelease' doesn't support architecture 'i386'

Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'xxx' doesn't support architecture 'i386'


Should a very popular question be closed as a duplicate of one that is older but extremely less popular?

Should I vote to close a duplicate question, even though it's much newer, and has more up to date answers?


$g(x+y)=g(x)g(y)$ for all $x,y \in\mathbb{R}$. If $g$ is continuous at $0$, prove that $g$ is continuous on $\mathbb{R}$

If $f\colon \mathbb{R} \to \mathbb{R}$ is such that $f (x + y) = f (x) f (y)$ and continuous at $0$, then continuous everywhere


Configure Netbeans to compile code in C ++

What is the difference between g++ and gcc?


Calculating current required for powering multiple robots in parallel

Choosing power supply, how to get the voltage and current ratings?


can we use <? insted of <?php for start of php file, if not what is the use <? at start of php


Book - Human kidnapped by aliens and forced to fight other aliens


The clearest way to represent Mathematica's evaluation sequence


Don’t recall password in iCloud on iPhone 6.


Why do I still see an Apache site on Nginx?


Installing Ubuntu on Dell XPS 7390 2-in-1

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


How to define global functions in zsh (macOS) that are available in scripts?

what is the zsh equivalent of bash's export -f


How can I petition to reopen a question which was - in my opinion - incorrectly closed?


Documenting Pythons @property "attributes" with docstrings

What is the right way to put a docstring on Python property?


Why does ice become sticky the colder it gets?

Why does the tongue stick to a metal pole in the winter?


Adjusting the response variable to incorporate scaling effects

Predicting count data with random forest?


Prove that $(x^n - 1)$ can divide $(x^{kn} - 1)$ without any remainder.

Prove：$x^d-1 \mid x^n-1$ iff $d \mid n$.


Simple past tense vs. perfect past tense

Present perfect for past action with present effect


Rainbow reflected on TV screen? (pic attached)


Responsive site not showing horizontal lines correctly due to scaling issue


What are differences between "let", "allow" and "permit"?

Which of the following sentences is/are incorrect? ("Permit" vs. "allow" vs. "let")


Intuition behind the sigma algebra generated by a series of random variables?

Intuition behind measurable random variables and $\sigma$-algebra


How to calculate p-value for t-test if original data is not available?

How to perform two-sample t-tests in R by inputting sample statistics rather than the raw data?


error: invalid conversion from ‘const char*’ to ‘char’ [-fpermissive]


Moving multiple files in directory that have duplicate file names

Moving multiple files in directory that might have duplicate file names


In which order should I start watching Star Trek?


How to efficiently track .bashrc (and similar) with git?


Making row values into column values -- SQL PIVOT


Replace entire line in text file using C#


How to set a gamemode radius with command blocks?

Is there a way to set an "Adventure Mode Boundary" in Minecraft?


Photoshop CS6 - How to stop Round Shape merging colors with background

How do I turn off anti-aliasing while drawing shapes in Photoshop?


Type '--2016-08-04' is not known on line 1 in source list /etc/apt/sources.list

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


Does the functional equation $f(1/r) = rf(r)$ have any nontrivial solutions besides $f(r) = 1/\sqrt{r}$?


Should all on screen buttons be included in the "File" menu?

Should I include all toolbar items inside menus?


Running 32bit program on 64bit ubuntu 15.10


I am not able to login to Ubuntu shell , because I am not given any chance to write my password


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


Use induction to prove a product of sums of squares is a sum of squares


Why are (representations of ) quivers such a big deal?


What happens to the acceleration of a body undergoing constant force?

Is kinetic energy a relative quantity? Will it make inconsistent equations when applying it to the conservation of energy equations?


Suppose that $x \equiv 1 \pmod n$ and $x \equiv 1\pmod m$. Prove that $x \equiv 1 \pmod{ mn}$.

Constant case CRT: $\,x\equiv a\pmod{\! 2},\ x\equiv a\pmod{\! 5}\iff x\equiv a\pmod{\!10}$


What special characters must be escaped in regular expressions?


This is going to be hard because of him/his needing to be there very early

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


Convergent series $\sum_n\frac{a_{n+1}-a_n}{a_n}$ implies that $(a_n)$ is bounded

If $a_n$ is a strictly increasing unbounded sequence, does $\sum_n \frac{a_{n+1} - a_n}{a_n}$ diverge?


I have been denied a visa several times in a row. How does one deal with such serial refusals?


how to run a software designed for windows 95 on ubuntu?

How can I install Windows software or games?


Finding recurrence formulas from procedural code and output lists associated with integer sequences


how to resolve "There are unresolved conflicts in the working directory" in Git desktop?

How to resolve merge conflicts in Git repository?


Do the Federation need to worry about the Treaty of Algeron?

What is the punishment for violating the Treaty of Algeron?


Please hide (meant: do not reveal) spoilers in emails!

Spoiler text is not hidden in community digest newsletter


Prove that $2^\mathbb{N}$ is equinumerous to $\mathbb{R}$

The simplest way of proving that $|\mathcal{P}(\mathbb{N})| = |\mathbb{R}| = c$


How to write perl sript that can't be run simultaneously

Running only one Perl script instance by cron


Showing that a ring is a field as well for one of the provided choices.


Event binding on dynamically created elements?


If $a, b, c$ are positive real numbers such that $abc=1$ prove that $\frac{a^3}{(a-b)(a-c)} + \frac{b^3}{(b-a)(b-c)} + \frac{c^3}{(c-b)(c-a)} ≥ 3$

How find this value $\frac{a^3}{(a-p)(a-q)}+\frac{b^3}{(b-p)(b-q)}+\frac{c^3}{(c-p)(c-q)}$


Clicking leave closed shows the reopen pop-up


My lens's focus ring can be twisted past infinity and the close-focus stops without ever hitting a hard stop— is it defective?

Why am I allowed to turn my focusing ring beyond infinity?


If I build a package from source how can I uninstall or remove completely?


Semisimple Lie algebras with invariant inner-products give compact Lie groups

Which Lie groups have Lie algebras admitting an Ad-invariant inner product?


Not able to ping to IPV6 address from Windows 7

Why is IPv6 ping failing to access google.com?


Poor recurrent neural network performance on sequential data

What should I do when my neural network doesn't learn?


How to handle C++ Native Callback Class in managed wrapper

c++/cli pass (managed) delegate to unmanaged code


Generic type usage with std::initializer_list

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


Windows defender not removing Program:Win32/Cayunamer.A!ml from system

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


How do I perform a GROUP BY on an aliased column in MS-SQL Server?


Are there really many continous distributions without the PDF

"Absolutely continuous random variable" vs. "Continuous random variable"?


Charecters are showing like this "?????" in PHP pdo connection