Help to clarify the meaning of a power supply's Voltage and Current rating

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


Suppose $H \le G$ and $g^2\in H$ for all $g\in G$. Show $H$ is a normal subgroup of $G$

Let $H$ be a subgroup of a group $G$ such that $x^2 \in H$ , $\forall x\in G$ . Prove that $H$ is a normal subgroup of $G$


How to implement LIKE% with single quote in SQL Server search from C# textbox.Text value?

Getting error while store data in sql server 2005 through textbox


"Nested independence" of $\mathsf{ZFC}$?

Can unprovability unprovable? Is there an $\omega$-fold unprovability?


How should boolean attributes be written?

What values can appear in the "selected" attribute of the "option" tag?


Filter Search Result by current site language

Search results only for the current language


Log file is about to be larger than disk, query still executing

How to manage log file size in large, heavy-use database


mkdir says that file exists when it doesn't

How to show hidden folders in File Manager (Nautilus) on Ubuntu?


Minecraft command block specifiers "[Data value] [Data tag]"?

What are the basics of commands in Minecraft Java Edition?


Long rest regains half hit dice - round up or down?

At level one, can you really never recover hit dice?


Install Intel HD Graphic Drivers on Ubuntu

How do I install the Intel Graphics driver in my system?


Spinner OnTouchListener, nothing happens. Why?


How to randomize (shuffle) a JavaScript array?


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


R multiple statistics for multiple columns with data.table

How to call a function that returns multiple rows and columns in a data.table?


What are the multidimensional versions of median

Is there an accepted definition for the median of a sample on the plane, or higher ordered spaces?


Printing in a function vs sequence of print statements in main_


Grok pattern matches but result also contains pattern

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


When can I treat infinitesimals as numbers?

When not to treat dy/dx as a fraction in single-variable calculus?


how to convert a formula stored in a string to double?

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


When i use arraylist.add it replaces all data with what I currently am adding, help is needed

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


Definition: $a \prec b$ , $ a \npreceq b$ , $a,b \in \mathbb{R}$

Does $\neg(x > y)$ imply that $y \geq x$?


how can i drive a motor with an inverter providing it's power supply?

Making a three phase voltage source to drive a gyroscope


Where does gravity get the energy to pull the ball?


Are "guessing game" questions off-topic?

What is the appropriate / preferred method for questions concerning programming nomenclature?


How do I create a .htaccess file so I can enter a clean URL but it processes the get requests?

htaccess mod_rewrite part of url to GET variable


Proving $\int_{0}^{\infty} \mathrm{e}^{-x^2} dx = \frac{\sqrt \pi}{2}$


Segmentation fault in scanning long long int in C

Getting a stack overflow exception when declaring a large array


#1054 - Unknown column - SQL Query Problem


How to find the roots of $\frac{\sqrt{3}-1}{\sin x}+\frac{\sqrt{3}+1}{\cos x}=4\sqrt{2}$?

An elegant way to solve $\frac {\sqrt3 - 1}{\sin x} + \frac {\sqrt3 + 1}{\cos x} = 4\sqrt2 $


Want to rename a files in folder with folder_1.txt folder_2.txt folder_n.txt name


I am finding it difficult to understand this adjacency matrix property- graph theory

Proof - raising adjacency matrix to $n$-th power gives $n$-length walks between two vertices


System says I flagged as "not welcome", but I didn't

"You have already raised this flag" Well, not really


What is the proper contraction for “should not have”

Can a word be contracted twice (e.g. "I'ven't")?


Select differentiating records from two tables

Find records from one table which don't exist in another


How to specify the location of my figures?

How to influence the position of float environments like figure and table in LaTeX?


java.lang.NullPointerException is seen when trying to invoke a method of class outside the package

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


A book from the 60s or 70s about a crashed spaceship and their colony

Short story about humans marooned on high gravity planet


Inaccurate reputation graphs - bug or as designed?


Help re-applying after Uk visit visa refusal

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


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


Windows 10 ridiculously slow after 20H2 update

CPU Speed stuck at 0.78 GHz, How do I increase it to its base speed of 2.30 GHz?


Will Upgrading to Mavericks Slow My System?

Will my Mac run slow if I update it to Mavericks?


NSMutableArray to NSString conversion provides array instead of string


Ubuntu 20.04 change background to solid colour


Are there tax implications of refund of overpayment from HSA?

How do I correct an HSA distribution when I was refunded by a health provider?


Verification not working for Uncaught TypeError: Cannot read property 'top' of undefined

Is there an "exists" function for jQuery?


Include revision history in inline editing

New way to edit bug -- Where are the previous edits?


Correlation non-significant and unique variance significant in the multiple regression analysis

How can adding a 2nd IV make the 1st IV significant?


How does comment voting and flagging work?


Ubuntu Software is not installing or updating anything. (16.04.1)

How do I resolve unmet dependencies after adding a PPA?


Is it possible with GEE to export all the images in an image collection?


Limit of $(n!)^{1/n}$ as $n\rightarrow \infty$.

Calculating the limit $\lim((n!)^{1/n})$


Ubuntu 14.04 running slow on Dell Vostro 1440

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


Is $\sum_{n=1}^{\infty} \frac{1}{\operatorname{lcm}[1,~2,~\ldots,~n]}$ irrational?

Elementary proof that the limit of $\sum_{i=1}^{\infty} \frac{1}{\operatorname{lcm}(1,2,...,i)}$ is irrational


How biased is a statistical study in which sampling was purposely made without repeats?


Can i install a 64bit lubuntu on my i386 pc?


Should I reject edits with disturbingly incorrect and/or confusing edit comment? (summary)

Is is OK to reject an edit based on poor spelling in Edit Summary?


Capture query results using SQL Server Profiler

Can SQL Profiler display return result sets alongside the query?


What is the limit of $(3n^2 + n)^{1/n}$ and why?


Should "Incorrect password" message show the password requirements of the current site?

Would it be bad design (and unsafe) to put password guidelines next to a login box?


How to "transition" from one texture/material to another (not animation related)


Proving that the sequence $a_1 = 4$, $a_{n+1} = \sqrt{a_{n} +20}$ converges and finding its limit

$\sqrt{c+\sqrt{c+\sqrt{c+\cdots}}}$, or the limit of the sequence $x_{n+1} = \sqrt{c+x_n}$


Site-wide activity page not being updated

Reputation not appearing in Rep. Notification Queue - yet it is given silently


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


NullPointerExceptions inside For Loop Arrays

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


How to assign a non working key to another key?

How can I change what keys on my keyboard do? (How can I create custom keyboard commands/shortcuts?)


Review queue edit posts mouse doesn't work


Http session Id same for all tabs in same browser


how to install ubuntu 20.0 lts from bootable flash drive through command line?

Is there a program to install Ubuntu from a Linux system?


Why wasn't Sauron invisible when he wore the Ring?


Windows hybernate vs shutdown + boot up times: Why choose for hibernate?


How can i set domain name on my localhost?


How to delete three element from a list?


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


How to prevent ENTER keypress to submit a web form?

Prevent users from submitting a form by hitting Enter


How to reset my lost admin password on 14.04

Nothing shows up in the terminal when I type my password


How to read a text file reversely with iterator in C#


How can I vertically align elements in a div?


The calling thread cannot access this object because a different thread owns it


Autosaving on emacs or xemacs files (preferably on loss of focus)

How to automatically save files on lose focus in Emacs


Interpretation of regression coefficients after power transform (possibily with polynomial transform and PCA)

How to interpret regression coefficients when response was transformed by the 4th root?


Check if Mail setup is done on IOS device via code

Check if user has email set up on their iDevice?


How to check isAccessible() for a dynamic list of field names?

Most optimal way to Enforce CRUD/FLS in Apex


How do I convert a TimeSpan to a formatted string?

How can I String.Format a TimeSpan object with a custom format in .NET?


How to make an image occupy the remaining white space on a page?

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


Continuity for integers valued functions

Prove that any continuous integer-valued function of a real variable is constant.


Does a space opera have to feature supernatural abilities, à la the Force?

Difference between Space Opera and Science Fiction?


prove equality $\lim_{n\to\infty}n(\sqrt[n]{a} - 1) = \ln a $

The limit as $n$ approaches infinity of $n(a^{1/n}-1)$


$n + 1$ numbers are picked at random from $2n$ integers $1, 2, 3,\dots , 2n$?

Prove using induction that from a set of $n+1$ numbers from $\{1,2,..2n\}$, at least one number will evenly divide another.


Do legendaries respawn after defeating them?

Do Legendary Pokemon Respawn After The Elite Four?


New "Ubuntu Software" not working (16.04)


Harvard Citation Styles "et al." and hyperlinking citations to references

Why do hyperref and harvard not work together properly?


Visiting the UK as a tourist and later returning to UK

Can I leave the UK and come back in, on a Tourist visa?


Demonstrate that if $f$ is surjective then $X = f(f^{-1}(X))$


Find $(2^{a}+1,2^{b}+1),$ where $a$ and $b$ are prime numbers greater than $3$ and $(x,y)$ represents the $\gcd(x,y).$

Prove that if $a$ and $b$ are odd, coprime numbers, then $\gcd(2^a +1, 2^b +1) = 3$


Unable to mount Windows (NTFS) filesystem due to hibernation


Display author profile fields in nodes created by that user

What approach for showing custom user fields on a node?


What is a serialVersionUID and why should I use it?


Is it possible to install a different wordpress installation in a subdirectory?

Is it possible to install WordPress within WordPress installation?


Obfuscating Rails app on MRI Ruby / JRuby for a enterprise customer


Sufficient conditions for $x,Ax,A^2x,...,A^{n−1}x$ being linearly independent?

Sufficient conditions for $x, Ax, A^2x, ...$ being linearly indepedent


Why print command can not be called with sudo?


Can I extend mathematical induction to real numbers?


Correct format to specify the ipv6 address in '/etc/hosts' file

Format of /etc/hosts on Linux (different from Windows?)


Concept clarification regarding functions

Domain, Codomain, Range, Image and Preimage


How do I limit the number of rows returned by an Oracle query after ordering?


Android create folders in Internal Memory


osx server, windows client, running emacs opens it on server not client


Can't bootUbuntu 64-bit using Virtual Box on host Windows 7 64-bit

Cannot install Ubuntu in VirtualBox due to "this kernel requires an x86-64 CPU, but only detects an i686 CPU, unable to boot" error


Why does the aorta spray blood when atmospheric pressure is higher than blood pressure?


Precision error that leads to different results


Movie Identification: Werewolf and molotov cocktails

Trying to find a werewolf movie with a teenage boy and family hiding in a cabin


Is it at all possible to execute 'mvn test' when tests are in src/main/java and not in src/test/java

Surefire doesn't launch test in src/main/java


when do the stargate Atlantis seasons take place in SG-1

In what order should I watch the various Stargate TV Series?


uncaught exception: error: { "$err" : "not master and slaveOk=false", "code" : 13435 }

mongodb, replicates and error: { "$err" : "not master and slaveOk=false", "code" : 13435 }


Instantiation of NSMutableArray in Obj-C 2.0


Perl Comparing two arrays if they match exactly

In Perl, is there a built in way to compare two arrays for equality?


How to enable hyperlinks in FlowDocument?

How can I get a FlowDocument Hyperlink to launch browser and go to URL in a WPF app?


Which elements in $\mathbb{Z}_{26}$ do not have multiplicative inverses?

If $q$ is coprime to $a$ then $a\mid nq-1,\,$ so $q$ is invertible mod $a$


Expressing the sign pattern $+--++--+\cdots$ in a series

How do you create an alternating series with the sign being the same twice in a row?


Show $ \langle f(t), f'(t) \rangle = 0$ for all $t \in \mathbb{R}$.

What can we say about the inner product $\langle f(t),f'(t) \rangle$?


warning messages: replacing previous import by plyr:: when loading my package

Warning: replacing previous import ‘head’ when loading ‘utils’ in R


unmet dependencies: initramfs-tools [Xubuntu 12.04]

How do I resolve unmet dependencies after adding a PPA?


Using "Did" should it be followed by past or present tense verb?


Jquery - how can I get to Jquery Object's name attribute?


Integration of $\sin(2x)$ via two different methods

Integral of $\sin x \cos x$ using two methods differs by a constant?


After Google Play Service update to version 13 I got an error


AccessViolationException while stepping through C#-Code in Visual Studio 2013 Update 2


How can I use launchd to auto update brew?

launchd plist format for running a command at a specific time on a weekday


plugin for eclipse which show me byte code of java program


Valid Indian visa in an expired passport


What's the difference between a shunt resistor and a four-terminal resistor?


Innertube fat on one side, skinny on the other

Is it normal for an Inner tube to bulge when inflated?


Unable to install XP or Win 7 Starter or even Ubuntu 10.10 on Lenovo Ideapad S10-3

Not able to install Win Xp on Lenovo Ideapad z570


The cover of my passport had deattached from the old passport. I am under F1 status in the US. can I still travel with it?

Passport book cover is slightly detached from page


Unbounded sequence has an divergent subsequence

Given the sequence $(x_n)$ is unbounded, show that there exist a subsequence $(x_{n_k})$ such that $\lim(1/x_n)=0$.


Getting a France Schengen visa but not going there

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


Is it possible that the universe in its entirety is discrete rather than continuous?

Does the Planck scale imply that spacetime is discrete?


limit as $x$ approaches infinity of $\frac{1}{x}$


Is there a website like Stack Overflow that specializes in code review?


How to solve the "io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: no further information" error on Minecraft?


NullReferenceException: Object reference not set to an instance of an object on boolean variable from separate class


The roots of $X^2-1$ in the ring $(\mathbb{Z}/n\mathbb{Z})[X]$

$x^2 = 1$ in the ring $\mathbb{Z}/n \mathbb{Z}$


How to make "Theorem 1" and not "Theorem 0.1"

Resetting theorem counters: \section and (missing) \subsection


How to traverse a list in reverse order in Python (index-style: '... in range(...)' only)

Traverse a list in reverse order in Python


Solve $\cos x +\cos y - \cos(x+y)=\frac 3 2$


NEWS - not certain where this word is derived from


Why doesn't $\int_C \mathbf{F}\cdot d\mathbf{r}$ always vanish?


Display notification when the question you are answering is voted as dupe

Add an alert when answering a question that has at least a close vote as duplicate


iphone - is the hotspot isolated (can you see other devices)?


C++ - Do virtual methods cause overhead in non-virtual methods calls?


Why is Raghav Sood's accounts count showing zero in his profile-page?

Other Stack Exchange accounts are not shown in my profile


The Area51 ads produce an error on per-site community ads

Images for Area51 proposal community promotion on imgur.com?


LINQ PropertyInfo out of range Exception when using List[i] but fine when declared variable tagged

How to tell a lambda function to capture a copy instead of a reference in C#?


I am working in company name or at company name?


From Mavericks to Snow Lion: how to get back?

Roll back from OS X Mavericks ( or any newer OS) to Mountain Lion


How to find my Office for Mac key within the program?

How can I recover my MS Office 2011 product key?


Performance StringBuilder vs concatenation


"Social-approval seeker" or "social approval-seeker" or "social-approval-seeker"?

When should compound words be written as one word, with hyphens, or with spaces?


How to automatically fetch missing dependencies when installing software from .deb?


Bug in system information script 'inxi' - displaying folder content instead of info


How to get seventh number ''drop"from drop#drop#drop#drop#drop#drop#drop#drop value of a column in sql?

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


What are bitwise shift (bit-shift) operators and how do they work?


Why this proof $0=1$ is wrong?(breakfast joke)


Is there a 'mechanical' explanation for the right-hand rule?

In electromagnetism, why does nature prefer the right-hand rule over the left-hand rule?


Reading string in to float produces incorrect accuracy

Why are floating point numbers inaccurate?


MalformedURLException when deserializing URL

Commons VFS and Java.net.URL - Adding support for "sftp://" protocol


Why Blowing Up other player's Personal Vehicle consider as Bad Sport?

How do I become a 'Good Sport' and what rewards can I receive?


Will a key light, a back light, and white reflector as fill achieve a white background for portrait photography?

How can I get a pure white background in studio photography?


How to initialize a list of dictionaries

Can I use a collection initializer for Dictionary entries?


Which armor/weapon type is the strongest to forge?

What is the best obtainable gear in Heavy Armor, Light Armor and Clothing?


Redirect all output to file using Bash on Linux?

How to redirect and append both stdout and stderr to a file with Bash?


Are mixed geometry types allowed in shapefiles?


Getting all posts from an XMLRPC request

How to get all posts (in chunks) via XML-RPC?


Given fields $M/E/F$, why does $[M:F] = [M:E][E:F]$?


What is the name of the glyph that separates sections of a chapter?

Is there a proper name for the 3 asterisks that are used to suggest temporal discontinuity?


biblatex - how to romanize words in italic title and v.v


NullPointException on double getLatitude()

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


Complex integration Question - Contour Method


javax.faces.application.ViewExpiredException: View could not be restored


Can one license be used on a dual-boot machine?

Same Mathematica 9.1 Student License on both Ubuntu and Windows 7


Should a question with a significant negative score be automatically closed?

Place questions with X net downvotes on hold automatically


Short story from the 80s - Character has to read instead of having brain programed

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


How can I effectively manage a hobby game project?


Is there a way to set an "Adventure Mode Boundary" in Minecraft?


Missing '}' in Minecraft Bedrock 'can_destroy' command?

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


Why comment when it's practically a spot-on answer?


Produce an infinite collection of sets $A_1, A_2, A_3,...$ with the property that

Partition of N into infinite number of infinite disjoint sets?


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


Prove alternating sum of binomial coefficients squared by induction

Alternating sum of squares of binomial coefficients


Can you upgrade the RAM of an Android device?


Global dictionaries don't need keyword global to modify them?

Why is the global keyword not required in this case?


My Ubuntu is running fsck on every bootup


Using OpenJDK and JavaFX for self-contained, modular packaging


One day visit to Istanbul Turkey during International travel

I am American with passport having layover in Istanbul for 20 hours. Do I need Visa?


dbDelta using Foreign key not working on update


Do not allow edits on different posts within 5 minutes


Sum of the roots of unity, $z_{1}^p+...+z_{n}^p$

How to prove sum of powers property of roots of unity?


python mysqldb update where variable where in list


Why do some authors write dx after integral sign?

Notation: Why write the differential first?


Show that in a topological space $\partial\partial A \subset \partial A$

Is the boundary of a boundary a subset of the boundary?


Cannot install Ubuntu in VirtualBox due to "this kernel requires an x86-64 CPU, but only detects an i686 CPU, unable to boot" error


The Most Efficient Way To Find Top K Frequent Words In A Big Word Sequence


Add a navigationbar with a back button to the app

how to create back button in navigation bar


C program to round numbers, rounded to second position after the decimal place

How do I restrict a float value to only two places after the decimal point in C?


launch an exe/process with stdin stdout and stderr?


Make closing question users post a conscious explanation

Should a user be forced to add a comment when they vote to close?


Conditional Entropy is less than entropy


Can an electrolytic capacitor be charged reversed bias by a small voltage?

Does an electrolytic capacitor degrade each time it receives reverse voltage?


Dawnguard vampire lord and companions werewolf question

How often can I change my mind about vampirism or lycanthropy?


What do I do when my computer won't boot after a drop?

Computer doesn't boot up, shows PXE error and/or "operating system not found", "no bootable device", "insert boot media", or other similar error


Time/Datetime block of code isn't working


Find the set of elements in a list without sorting in Python

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


Should I use 'neither one', 'none of them' or 'neither one of them' in this question?

"Neither", "none", "no one" + [of them] + verb-s


Why does CTRL-ALT-F1 not send me to a terminal?

Switching between virtual console and GUI


Are terminating decimals dense in the reals?

Is $\{\frac{m}{10^n}\mid m,n\in\mathbb Z,\ n\geq 0\}$ dense in $\mathbb R$?


unable to solve a certain NullPointerException error

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


Getting the ID of button from an onclick function

How to pass arguments to addEventListener listener function?


What is the relationship between bash and xterm?


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


Seeking a layman's guide to Measure Theory


No matter what desktop environment, how do I get a permanent global application menu?

Unity's "File Edit View" menus in Gnome Fallback in Ubuntu 12.04?


Why do we not reinvent the journal system?

Why do universities have to spend money on journals?


El Capitan froze and rebooted (Macbook Pro Retina Mid 2012)


Late Schengen exit visa declined experience

Fined €110 for Schengen overstay: impact on future visas?


What's the difference between an argument and a parameter?


Relation of this antisymmetric matrix $r = \left(\begin{smallmatrix}0 &1\\-1&0\end{smallmatrix}\right)$ to $i$


PDO - passing a field name as a variable


How can I display host name on windows desktop


Providing command key-value arguments with commas in value


Why do compact cameras keep using 4:3 and not 3:2 like DSLRs?

What historic reasons are there for common aspect ratios?


Correct way to import an RSS feed and display it in a view?


Which method called when app killed from background.

Delete data when app is killed in the background.


How can I change the margins for only part of the text?


How do I programmatically determine operating system in Java?


How does one set a logarithmic scale in a ContourPlot?


show that $(p \to q) \vee (p \to r) \to (q \vee r)$ and $p\vee q\vee r$ are logically equivalent

Prove $\;\big((p\rightarrow q) \lor (p \rightarrow r)\big) \rightarrow (q\lor r)\equiv p \lor q \lor r$ without use of a truth table.


How to download entire Youtube channel using commands or application


How do I get all 3 characters together for the "Three man army" trophy?


How to change bibliography numbering to squared brackets?


Can iMac 2017 5K 27' support 3 external monitors?

MacBook [Pro] - how many displays, what resolution/frequency?


What determines whether multiple highlighted files in Finder show in the same Get Info window?

How can I decrease the maximum number of files where Get Info will open multiple windows?


Proving $L_{p}$ Norm When $p\to \infty (or \|x\|_{\infty})$

The $ l^{\infty} $-norm is equal to the limit of the $ l^{p} $-norms.


How to execute a program or call a system command from Python


Keep program running after logging out SSH -X, and reopening it later

Transfer X from monitor to remote machine


Referencing tables when they are inside `onlyenv` (beamer)

Beamer ignoring a \label when used inside certain \only's


The binomial formula. how to show: $\Sigma_{k=0}^n k \binom{n}{k} = n2^{n-1}$

How to prove this binomial identity $\sum_{r=0}^n {r {n \choose r}} = n2^{n-1}$?


MetadataException: Schema specified is not valid

MySQL Entity Framework Error - The specified store provider cannot be found in the configuration, or is not valid


Calculate elevation change in point feature class

Referencing other points(rows) in field calculator


simple class inheritance in c++ compiler errors


How to download and install Utorrent for Ubuntu 14.04


Can't log in after resume from sleep mode

Can't login after suspend on Ubuntu 17.10


"I'm not as good as him." versus "I'm not as good as he is."

Is it "as wonderful as them" or "as wonderful as they"?


How to change the form $A\cos \omega t + B\sin \omega t$ into the form $\sqrt{A^2+B^2}\cos(\omega t-\phi)$

Combining cosine or sine terms into a single cosine or sine


Testing for normality in SPSS: Procedure for two or more independent variables WITHOUT levels/groups

What have to be normally distributed: groups or whole sample?


Would immunity to non magical fire damage protect me from an Azers fire damage?

Would the fire damage from a burning bush lit by Burning Hands still be magical fire damage?


Does an Obj important contain UV mapped textures?

.fbx export why there are no materials or textures?


Identify unique records on CSV based on specific columns

Remove lines based on duplicates within one column without sort


Can't change owner of folders/files on thumb drive


what does "you have broken package." mean?

How do I resolve unmet dependencies after adding a PPA?


Why does the map in my controller always returns a nullpointerexception?

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


Given (p ∧ q), use the Fitch system to prove (q ∨ r).


What situations exist where Bash variables should not be double quoted?


Why are the largest land/air animals today smaller than in the Mesozoic?

What was the reason for some plant and animals to become giant in course of evolution?


Deleting an element from an array in PHP


MySQL prepared statements can't insert UTF-8 letters


How can I add custom '.desktop' application launchers to Ubuntu Dock?


Unable to use or open Notepad++ after installation


Centering in \begin{aligned} enivronment

Gather vs aligned - centered equation with one number


How can I detect common substrings in a list of strings


How to get back to scene view after opening python console?


Aphorisms that use two words in reverse order

"We must eat to live, not live to eat." — What kind of rhetorical figure is that?


how can i know the number of elements in array

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


How is the Box-Cox transformation valid?


C# regular expression for sentence that may be encompassed with any non-alphabetic chrachter


Easy way to use variables of enum types as string in C?


Why isn't Ubuntu using HTTPS by default when accessing software repositories?

Are repository lists secure? Is there an HTTPS version?


Easy way to sectioning with a leading zero

How to output a counter with leading zeros?


Methods for avoiding bash history logging?

How do I close a terminal without saving the history?


error.log file in public_html which is publically viewable?


Find the number of trailing zeros of $ 100! - 101! + ... - 109! + 110!$

What are the trailing number of the zeroes in the given integer


What is meant by the term "Instrumentation"?


Is it OK to catch Throwable for performing cleanup?

Is it a bad practice to catch Throwable?


How to solve null pointer exception when working with Firebase

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


Convergence of $\sum_{n=1}^\infty \frac{n^2}{2^n}$


How to combine multiple commands in terminal?


Why is %eax zeroed before a call to printf?


List of lists changes reflected across sublists unexpectedly


How do I take pictures of a mat from the top?

What is the best techniques to photograph large rugs?


Did Ariana Dumbledore's portrait dig the tunnel to Hogwarts?

Who created the tunnel between the Room of Requirement and Hogsmeade?


Getting axes range from plot (of the plot)

How to get the real PlotRange using AbsoluteOptions?


Ubuntu 1904 does not boot from LiveCD on Hyper-V in AMD Ryzen. No problems in 1804

Installation failure on AMD Ryzen 3900X and Gigabyte Auros Master X570 motherboard


How to map right windows key to backspace?


Why does ltablex skip a number in captions?


Simplest known solution to "World's Hardest Easy Geometry Problem"?


multi line equation with full left brace, small right brace and text at right bottom of right brace


how to reduce DC voltage using resistors?


Why can’t the Doctor’s companions understand babies and horses?


How To Prove That The Rijndael Polynomial Is Irreducible?


Is it possible to hook up a MySQL database with python

How do I connect to a MySQL Database in Python?


PHP: do an ORDER BY using external data?


Expected number of steps till a random walk hits a or -b.


Login screen not appearing after removing KDE

How to return the login screen to the default


Linq : filter duplicated line without taking account a column

LINQ's Distinct() on a particular property


What is the Economic system of the Potterverse?


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


Null object reference even though i declared the checkbox

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


What is \null and when do we need to use it?


Can you convert Minecraft: Education Edition worlds to Bedrock Edition or Java Edition?

How can I import worlds from Minecraft Bedrock into Minecraft Java?


Windows 8 turns program sound volume down randomly


NoClassDefFoundError when getting BackEnd projet to my FrontEnd

Why am I getting a NoClassDefFoundError in Java?


Why isn't the center of the galaxy "younger" than the outer parts?


Any faster approach than Outer for my computation

Fastest way to calculate matrix of pairwise distances


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


$\frac{f(t)}{t}\rightarrow b$ as $t\rightarrow\infty$

if $f'(x)\rightarrow L$ as $ x \rightarrow \infty$, $-\infty \leq L \leq \infty $ then $ f(x)/x \rightarrow L $ as $x \rightarrow \infty$


How to represent dimension-$(0,n)$ matrices


Attempt To De-reference a Null Object on a Before Trigger

Attempt to de-reference a null object: Trigger


Find all the integer solutions for: $3x^2+18x+95\equiv 0\pmod {143}$

Solve $x^2+5x+6 \equiv 0 \pmod{\!11\cdot 17}$


Why my hot water goes out in less than 2 mins?

71 gallon water heater doesn't maintain hot water


How to auto close LWC quick action from JavaScript?


How to increase ping time/network connection latency on Windows?


How to install pgfplots in Ubuntu 12.04.3 LTS?

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


Can the Mavericks install binary be shared between two different apple accounts?


Interior of the boundary of an open set is empty

Prove that the Interior of the Boundary is Empty


Proof for a general integer solution of the equation 𝑎𝑥+𝑏𝑦=𝑁

General solution of linear equation = particular + general homogeneous solution


Why does my computer beep when I turn it on? What are these beep codes?


How to override text-editor's encoding with php

PHP: Convert any string to UTF-8 without knowing the original character set, or at least try


Error installing nvidia driver on 18.04 server

Install Nvidia driver instead of nouveau


Chi Square Tests throws varying p-value results

Why are p-values uniformly distributed under the null hypothesis?


OV-chipkaart or GVB day pass for within Amsterdam travel?


How do I make hair particles appear on top of the emitter and not through it?


How random function inside random class generates an integer?

Random number generator only generating one random number


How can I make my application have a 30 day trial period

Create an application that will expire after a trial period


Find out which app is making notification sounds?

How can I know which app is giving me notification sounds?


\includegraphics renders my pdf at the right side of the page (exceeds page bounds)

Centering with \includegraphics not with \begin{figure}?


Terminal stopped working [Ubuntu 18.4LTS]

Terminal not opening up after upgrading python to 3.7


In Java sometimes method parameters act like passed by reference, even though they are not. what method are they passed by?

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


Without the Axiom of Choice, must two nonempty sets have a surjection between them?

The dual version of trichotomy of cardinality without AC


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


Is schengen visa required for two layovers in Germany

Lufthansa connecting flight at Munich, only 45 minutes in between. Will I be able to make it?


Fastest way to add a constant column into a array


Difference between "idiom" and "proverb"?

What's the difference between a proverb and an idiom?


Hurdles in creating (close to) infinite images


counting the lines in the text file having different types

line count with in the text files having multiple lines and single lines


Number of bitstrings with $000$ as substring


Trying to assert role = Button when using a dyanmic span id

How to handle dynamic changing ID's In XPath?


How can I find online playtesting groups to playtest my game?


Update to latest version of java after ppa is discontinued


On a plane there are two identical circles that do not intersect. One straight line intersects circle 1 at...


Where should I post a question about finding free-to-use OS icons?

Where should looking-for-resources questions go?


Is it only writting to a HDD which causes failure?

Is it only wittting to a HDD which causes failure


Using `With[...]` with a list specification as a variable

Put local variables for Block in a variable


GGPLOT facet grid : How can I sort combined plot on value


What nouns can be used to mean someone who is angrily inciting hatred in a public area against innocent people?

Word for someone who loves to create and organise noisy, lively, chaotic events


Windows 10 Disable Win + Tab Task View Window Animation

Turn off Windows 10 Task View sliding animation


Probability of two uniform random numbers being more than $\frac{1}{2}$ apart


Bezier Circle looks flattened like Tapeworm

Distorted mesh when I use a bevel object on Nurbs curve vs. Bezier curve


How do I properly change the debian default python 2.7.9 to python3 or another version?


How to combine bold and "code sample" in Markdown?


Quick - Maybe Question on changing gears

Which gears combinations shouldn't be used?


Php mysqi bind_param Number of variables doesn't match number of parameters in prepared statement

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


Dividing a deck in four stacks, aces must be in different piles (Conditional Prob.)

Probability of deck of cards such that each person receives one ace


How to suspend from the command line in gnome 3.14

How can I suspend/hibernate from command line?


Python zip - Why do we need to unpack the argument?

Transpose/Unzip Function (inverse of zip)?


How to Create SQLite Database Outside an Android Application?


Show that for a $2\times 2$ matrix $A^2=0$


Use of '? extends ' and '? super ' in Collection generics


Linux bash nohup + background in a for loop hang

Getting ssh to execute a command in the background on target machine


What's MAC address ? What is a unique ID for a PC?

How to get a unique computer identifier in Java (like disk ID or motherboard ID)?


Windows 7 task bar at autohide, make it totally disapear?


No Indian (and Bengali) keyboard layout in Ubuntu 17.04?


Top bar scrunched/smooshed Ubuntu 20.04 (GNOME)

Ubuntu 20.04 interface font too small after restart, even with high scaling factor


Scan multiple pages using WIA automation

Using C#/WIA version 2.0 on Vista to Scan


Standard @gmail.com and separate domain user alias?


$(a,n)=1\Rightarrow \exists [b]\in J_n $ such that $[a][b]=1$

$ a\in \Bbb Z_n$ is invertible $\,\Rightarrow\gcd (a,n) =1$


css - vertical space being added on elements with display:inline-block

Why aren't these elements with display:inline-block properly aligned?


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


Any line intersect with $bd(S)$ at at most two points. Then $S$ or $S^c$ must be convex.

$\forall x,y\in\partial S$, the line connecting $\{x,y\}$, $L\{x,y\}\cap\partial S=\{x,y\}$, then $S$ must be either convex or concave?


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


Adding title and alignment of adress, moderncv

Add the field "Subject" to moderncv letter


Azimuth and Distance, NumericalDigitize, Numerical Vertex Edit, XY tools and other plugins are not on QGIS Plugin Manager version 2.0.1


Can high power USB destroy older devices?

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


Polymorphism not always working when using reference


How to build a hand out of a UV circle and Cylinder?


How to identify linux swap partition on windows 10?


$K[X,Y]/(XY-1)$ not isomorphic to $K[T]$

Show that quotient rings are not isomorphic


How do I add a file to the last local commit?

How to modify existing, unpushed commit messages?


Using a list of tuples in a pure function


More detail please on exactly why the Hausdorff measure is monotone decreasing?

Why is $H_\delta^d$ monotone decreasing in $\delta$ in the definition of Hausdorff measure?


Why am I getting 'Data tag parsing failed: Unbalanced quotation' for this command?

I need help with this Minecraft Tellraw command, Issue at column 89


setters/getters and getName() and application error


Is Christmas equally Likely to fall on any day of the week?

Distribution of days in a week on Christmas


Uses of the definite article (the) in generic noun phrases


Can't purge old kernels (dependency problems), but /boot is out of space

Boot partition full, failing to delete old kernels. Broken packages


convert Python list to ordered unique values

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


JavaScript: parseInt's radix mystery with Array.map

Why does parseInt yield NaN with Array#map?


libpng warning: Application jmp_buf size changed Segmentation fault when try to run xampp installation file


Coefficient of $x^{-2}$ in expression $(x-1/x)^{12}$

Find the coefficient of the term $x^2$ in $\left(x+\frac 2x\right)^{4}$


Is there an easy way to add a hide password type feature in python code?

Getting command-line password input in Python


How to create and send an email to multiple clients

Can Outlook send multiple simultaneous emails to different people without doing a bcc?


Probability of selecting q red balls from m red balls and n blue balls


(solved) Mysterious and frequent activity on secondary disk, event when offline in Disk Management

Why is Windows constantly spinning up my secondary HDD?


Counterexample to $g \circ f$ one-to-one $\implies$ $g$, $f$ one-to-one

Example where $f\circ g$ is bijective, but neither $f$ nor $g$ is bijective


Why are Weapon XI and Deadpool totally different?


How do I get the application exit code from a Windows command line?


Application crash due to SharedPreferences error

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


Taking Back Up Of SharePoint Sub site and Restoring in to another Sub site

Copy site with content to another site collection


Show that $(0,1]$ ~ $(0,1)$ by constructing a one-to-one correspondence between the two sets.

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


Is $x\sin\left(\frac{1}{x}\right)$ uniformly continuous in $\mathbb{R}$?

Uniform continuity of $f(x) = x \sin{\frac{1}{x}}$ for $x \neq 0$ and $f(0) = 0.$


How to show with an Epsilon-Delta proof that the limit does not exist?

How to prove that a limit does not exist?


Proving that a sequence does not converge?

Find if the sequence $\left((-1)^n + \frac1n\right)_{n\geq 1}$ converges or diverges


input(): "NameError: name 'n' is not defined"

input() error - NameError: name '...' is not defined


Anime in which the hero is a kid and his ace monster is a lion who becomes a giant when the hero throws a gemstone in its head

Anime about a red haired boy suddenly being transported into another world


What are the advantages of top 20 universities over top 70s for CS PhD in USA?

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


awk misbehaving , where some have long strings (up to 45 characters)?


Are the hats available on per-site metas?

Why didn't (or did) I or some other user get a hat although the requirements were (or weren't) fulfilled?


Synchronizing "token" between players(multiplayer)

How to synchronise the acceleration, velocity and position of the monsters on the server with the players?


Transit VISA for US from India via London

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


How do I book flights Boston area to St. Thomas to Seattle to Boston area?

How can I do a "broad" search for flights?


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


If the order of a number (mod n) equals n-1 then n is prime?

How to prove Lucas's Converse of Fermat's Little Theorem without using primitive root?


Why is $\infty \cdot 0$ not clearly equal to $0$?


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


How to use another laptop as extended monitor?

Can I use my laptop as a second monitor?


Why can't I post answers to questions on Stack Overflow?

How was this answer posted after this question was closed?


How can I get out of an answer ban - FAQ inadequate


How do I get rid of the white space around included graphics?


Bug: Edit Profile settings CSS issue for Privileges and Edit Developer CV

The ::after selector for external links is positioned with the text


Why am I getting a blank page on mobile after adding a comment?

Screen goes white when posting a comment


How to add points to points in polygon function

Joining non-spatial CSV file to spatial data (shapefile) using QGIS?


Achievement list in Android app doesn't show fully

Today Achievements only showing in Stack Exchange Android app


Can I use spam and RA flags interchangeably?

What are the “spam” and “rude or abusive” (offensive) flags, and how do they work?


Short story about robots and a statue of a child

Short story about robots wearing out and 'dying'


Getting nullpointer when hide androic activity control form fragment class

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


search a particular string and remove all the remaining after that string


Remove CSS class from element with JavaScript (no jQuery)


When and will it be another ubuntu version soon?

Where can I find the status of the released versions of Ubuntu?


Proof of the inequality $(x+y)^n\leq 2^{n-1}(x^n+y^n)$


store data in database in background using multi-threading for iPhone


Change folder icon of multiple folders, Music albums

How to set the first picture of every folder as its folder icon?


Why does subsurf modifier cause weird deformation at the end of a cylinder?


Force Framework to use Enum Entity Name instead of its Value

JavaScriptSerializer - JSON serialization of enum as string


JavaScript closure inside loops – simple practical example


Constrain movement of a locator inside Manipulate


Javascript and Jquery mixing, what happens first?

How do I return the response from an asynchronous call?


Add "Eq." to Equation numeration but not to reference

How can I change the labelling of an equation?


If Ax = 0 for every x in $R^n$, A is a zero matrix

Prove that if for every $x \in \mathbb{R}^N$ $Ax=Bx$ then $A=B$


Rewriting List of Matrix Equation in Terms of Individual Equations?

Equating matrices (or higher order tensors) element-wise


How to expose opportunity object in a community

Opportunity Access for customer community and customer community licenses


Should I upgrade to the latest Linux Kernel?

How do I map Linux Kernels to Ubuntu Kernels?


Get day difference between 2 strings using javascript

How do I get the number of days between two dates in JavaScript?


Boot partition is 100% full. Cant remove old packages to make space

My /boot partition hit 100% and now I can't upgrade. Can't remove old kernels to make room


How to clone all remote branches in Git?


I have a JSON Object in JavaScript and want to access a key from a String variable

Dynamically access object property using variable


Conditionally heteroskedastic linear regression: How can I model variance from given predictors?


Is “Paul’s and my ideas” *really* the correct possessive?

"My wife and I's seafood collaboration dinner"


BlockingQueue can't read String from JTextField

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


How can I find the difference between a folder and a folder link in Ubuntu?

What do the different colors mean in ls?


In Pong, how do you calculate the ball's direction when it bounces off the paddle?


Circuit component controlling charging current


'boolean android.database.Cursor.moveToFirst()' on a null object reference


Aperture, Canon Eos 1200D, Am a beginner

What is aperture, and how does it affect my photographs?


What kinds of quotes to use with mysqli_real_escape_string?


Another way to say the max and min number


What's the difference between regression and analysis of variance?


Suppose $n$ divides $3^n + 4^n$. Show that $7$ divides $n$.

Prove: if $n\mid 7^n+6^n$ and $n>1$, then $13\mid n$


How to iterate the installed fonts using javascript?

list every font a user's browser can display


"hash sum mismatch" error when doing update

Trouble downloading packages list due to a "Hash sum mismatch" error


How can we move an object with zero velocity?


Difference between reflexive pronouns and by + reflexive pronouns


In a set of 10 billion possible items, if I have X items what is the probability of two being the same?


On Cesàro convergence: If $ x_n \to x $ then $ z_n = \frac{x_1 + \dots +x_n}{n} \to x $


Installing ubuntu in a lenovo thinkpad 490s?


Managing Multiple Connections in Windows 10

Bind application to a specific network interface


$\mathrm{Hom}$ and $^*\mathrm{Hom}$ for graded modules: Exercise 1.5.19(f) of Bruns-Herzog


Unexpected problem with a simple code that creates nested lists

List of lists changes reflected across sublists unexpectedly


How to have a yeast bread dough rise in a cool space

How do you raise your dough in cold seasons?


Binary XML file line#0: error inflating class android.widget.imageview

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


Rules about using that to describe people?

Can the word "that" be used to refer to people?


What is this S icon inside white square?

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


Why swap1 method gives false swap & swap2 method gives real swap?

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


Showing remaining review count while reviewing

Let me know how many reviews I've done inside the queue.


Why is the dynamic pressure not a vector quantity?

Define Pressure at A point. Why is it a Scalar?


Is it possible to overwrite ubuntu from windows?

How do I remove my Ubuntu partition from Windows 7 and reuse the space?


Where can I write a temp file from ASP.NET?


Why won't the program run into the 0.01 section?


How to redirect mail from Gmail account to Google group mail

Gmail, how to forward email to group using a filter


Do people normally own more than one wand?


Why is "$A$ unless $B$" equivalent to $A \lor B$?


A stop job is running for Session c2 of user


A "fast" way for  computing $ \prod \limits_{i=1}^{45}(1+\tan i^\circ) $?


Operations research - summation notation


What if we suppose continuum hypothesis is false?

Statement that is provable in $ZFC+CH$ yet unprovable in $ZFC+\lnot CH$


Why "sudo perl" and "perl" execute different perl version?


Find all multiplicative continuous functions on $(0,\infty)$

If $f(xy)=f(x)f(y)$ then show that $f(x) = x^t$ for some t


grub2-common : Breaks: shim (< 13) but 0.9+1474479173.6c180c6-1ubuntu1 is installed

dpkg-deb: error: archive ... has premature member 'control.tar.xz' before 'control.tar.gz', giving up


How to display a number in indian rupees format using java

Displaying Currency in Indian Numbering Format


FIrefox - Why does ALT+A select all text and not CTRL+A?


Way to force merge/rebase conflict on a specific file

Git - how to force merge conflict and manual merge on selected file


What's at the other end of the Forbidden Forest?

Is the Forbidden Forest surrounded by a wall?


How to fix the NullPointerException error?

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


Apparent contradiction on ideal OpAmp equations


Best practice in versioning / backing up work?

Archiving papers, simulation and experimental data, etc?


Encoding unicode path with filesystem encoding breaks it

Unicode filename to python subprocess.call()


Attempting to get my terminal to play a specific ogg file while I type

Is there a program that will emulate typewriter sounds?


How do use elytra wings in minecraft java edition. I’m in1.14.30


Show $\tan(x)+\tan(y)+\tan(z) = \tan(x) \tan(y) \tan(z)$

Prove that $\tan A + \tan B + \tan C = \tan A\tan B\tan C,$ $A+B+C = 180^\circ$


Tilted rectangle in residuals vs fitted plot

Interpreting the residuals vs. fitted values plot for verifying the assumptions of a linear model


Remove spot on sensor Olympus OM-D E-M10

What is the best way to clean the sensor on a interchangeable lens camera (mirrorless or digital SLR)?


Using CookieContainer with WebClient class


How can I roll back xserver-xorg-core and xserver-common?


"Install VMware Tools" greyed out after installing ubuntu 15.04 on vmware player 7.1


Are there ready made Java classes for the MtGox/PubNub JSON API?

Convenient way to extract data from the MtGox/PubNub JSON API?


Swap on SSD - will it decrease life sizeably?

Why are swap partitions discouraged on SSD drives, are they harmful?


Topology on the real numbers such that all polynomials are continuous but cosine is not continuous


Possible bug while plotting homographic function with stylled axes (?!)

Why do Arrowheads interfere with ImagePadding?


Is lookaround always executed after the character expansion in Regex?

Regular expression to match a line that doesn't contain a word


Python reading of a file stops before it should in Windows 7


Will using a mailto link on your web site still get that address spammed in 2018?

Way to list "Contact Us" email address on web site, yet reduce likelihood of spam?


Visual Studio 2008 IDE freezes/crashes when opening .aspx file with css included

Visual Studio 2008 hangs while opening aspx/ascx file


Help with solving trascendental equations involving Bessel's equations

Labeling solutions of an Eigenvalue equation involving Bessel functions


How to load classes from jar file at runtime?

How to load JAR files dynamically at Runtime?


How to automatically bring an activated window to the foreground?


A word or term to describe someone who likes to make people look stupid

What is the term for accusing a person of mischief through invented, twisting and changeable terminology?


jQuery onclick not firing on dynamically inserted HTML elements?

Event binding on dynamically created elements?


How did I just downvote and then upvote an answer?

Downvoting should cancel an upvote before attempting to apply the downvote


How to create a desktop shortcut in Unity?


How to change the chapter number to display as text (One, Two, ...)?


What happened to the old files if we mount a drive to the directory?

Where do the files go if you mount a drive to a folder that already contains files?


Given a short exact sequence, is the following true?

Example of a finitely generated module with submodules that are not finitely generated


How do you synchronize enums in DB with your PHP code?


Which package can easily write a graph, as an arbitrary curve or area, just for indication


$g\circ f$ bijective iff $f$ and $g$ bijective?

Example where $f\circ g$ is bijective, but neither $f$ nor $g$ is bijective


Relation between surface area and volume; and perimeter and area.

Why is the derivative of a circle's area its perimeter (and similarly for spheres)?


How is it possible the universe expanded faster than the speed of light during inflation?


How do download a file from url in Python


Is it valid to conduct t-tests with just 20 students?

Why is the t-test designed for small samples?


Why can templates only be implemented in the header file?


Android Error: Only the original thread that created a view hierarchy can touch its views

Android "Only the original thread that created a view hierarchy can touch its views."


After $t$ hours, the hour hand was where the minute hand had been, and vice versa

Clock hands moving to take each others places.


How to record webcam and audio using webRTC and a server-based Peer connection


How to query 4 level parent-child in SOQL

Multiple Sub Query using child parent relationship


How to understand python list references

List of lists changes reflected across sublists unexpectedly


What do you call a Q&A user who posts a question but never checks back?

Asks a question; never responds to answers/comments


In Android How to setvalue according to edittext fields


NullPointerException error when attempting to iterate through an ArrayList

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


How to resolve Unmet dependencies error?


Is there a fix or workaround for the this platformResourceLoader error

Unable to load styles and script from static resource in LWC after summer'19 release


Sort ArrayList of custom Objects by property


C++ lambda with captures as a function pointer


Java array , print what is stored in the array

What's the simplest way to print a Java array?


Is "burning" metals in the Mistborn series the same as digesting?


How to space letters according to a specific number?

What is the most "pythonic" way to iterate over a list in chunks?


What does "options = options || {}" mean in Javascript?


Why is <? used for and which is the difference with <?php

Reference — What does this symbol mean in PHP?


Add and remove tag buttons are vertically oblungated

Alignment issue in the Edit Profile & Settings -> Preferences page


How do I make a 3 dimensional character out of flat picture?


Horizontal centering for an absolutely positioned image

Center an element with "absolute" position and undefined width in CSS?


What special characters must be escaped in regular expressions?


How to remove whitespace around equation when \abovedisplayskip, \adobedisplayshortskip, ... don't work


What is effect of increasing number of hidden layers in a Feed Forward NN?

Why are neural networks becoming deeper, but not wider?


What is the point of assigning by reference?

How does the "&" operator work in a PHP function?


When is "EDIT"/"UPDATE" appropriate in a post?


Google Chrome Address Bar Font has gone too large, how can we reduce it


Best Resource to learn about internal working of ML algorithms for an absolute beginner?


I've just installed Ubuntu 16.04 LTS and Nothing shown after logging in

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


Prove by induction $\frac{a_{1} + a_{2} + a_{3} +...+ a_{n}}{n} \geq \sqrt[n]{a_1 \cdot a_2 \cdot a_3 \cdot ....a_n}$.


Variable being passed with single quotes using PHP and MYSQL

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


Can an opponent bolt a mana-generating creature to stop me from generating mana?

Does an ability resolve if the source of the ability leaves the battlefield?


How to prove theorem using Euler's formula?

$\sum \cos$ when angles are in arithmetic progression


How should I collapse elements in Python?

Creating a dict from list of key, value tuples while maintaining duplicate keys


How to get JSON HTTP request body from error report with elmah?

Elmah: How to get JSON HTTP request body from error report


How to have an existing Ubuntu installation overwrite a Windows partition?

Using GParted to remove windows partition


How to prove $\lim_{n\to\infty}\frac{a^n}{n!}=0$

Prove that $\lim \limits_{n \to \infty} \frac{x^n}{n!} = 0$, $x \in \Bbb R$.


Prove: If $\gcd(a,b,c)=1$ then there exists $z$ such that $\gcd(az+b,c) = 1$


Why I do get error 101? How is my DNS involved?


Add xinput to the start up secuence of LXDE


contains method of String is not working properly


Can a pronoun and its referent have different plurality?


Why there is time limitation/condition to accept our own answer?

Why must I wait two days before accepting my own answer?


1,5,9,13,17...Is a sequence with inf many primes. How to show using Gaussian integers?

Infinitely number of primes in the form $4n+1$ proof


Serial numbers generated copy to clip board button

How do I copy to the clipboard in JavaScript?


Proving a logical implication using modus ponens and metatheorems


How does the SO voter fraud detection mechanism work?


After breaking my GRUB installation, wiping the drive and reinstalling, Xubuntu launches but there is no GRUB

How to install the Boot-Repair tool in an Ubuntu live disc?


ConcurrentModificationException thrown without directly looping through collection

Iterating through a Collection, avoiding ConcurrentModificationException when removing objects in a loop


NullPointerException while setting adapter to the gridView in onPostExecute()

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


Excel dll for Microsoft.Office.Interop.Excel


Error in SQL Syntax when trying to insert

Syntax error due to using a reserved word as a table or column name in MySQL


cat a file containing "?" in command substitution

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


how to make junit test run methods in order

How to run test methods in specific order in JUnit4?


Snape muttering his little counter curse

How can Voldemort trust Snape after the events of the first book?


Text annotating process, quality vs quantity?


Is there a tool to help find where the best place to ask a question is?

Search for "similar questions" across multiple sites?


Why is a predictive distribution wider than mean response distribution?

Difference between confidence intervals and prediction intervals


Lack of available storage on my Samsung Galaxy Tablet

How disk space is used on Android device?


How to prove $b=c$ if $ab=ac$ (cancellation law in groups)?


Review of my question ban on Stack Overflow

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


Failed to build EVDI installink displaylink drivers (even though already in 16.04)

Failed to build EVDI installing DisplayLink driver


Eliminate desktop switching transition/delay

How can I disable animation when switching desktops in Lion?


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


Electric field near a uniformly charged ring using gauss law

Electric field at a point on axis of uniformly charged ring using Gauss law


How to describe the use of 'them' with nouns?

Use of "them" as an article, not a pronoun


Crontab -e with Debian Buster not working


Summarizing multiple columns with dplyr?

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


MOSFETs: Gate-to-Source resistor and Gate resistor value calculation


What is an elegant way of finding the max value produced by a running sum?

How to find the cumulative sum of numbers in a list?


Is this the right way to protect database from injections?


How do I identify a dataset with no observations? For an IF statement

How to detect how many observations in a dataset (or if it is empty), in SAS?


How can I read a file even when getting an "in use by another process" exception?


Why implementing an interface method private is accepted?

C# Interfaces. Implicit implementation versus Explicit implementation


Re-Posting this - Terminal Server - Group Policy prevent command line [2]


TypeError: 'str' does not support the buffer interface 4

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IP address storing in MySQL database using PHP

What is the most appropriate data type for storing an IP address in SQL server?


how to calculate number of days between two dates excluding weekend java

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I restored to default in the BIOS, now I can't install Ubuntu

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


Is it possible to figure out what Apple ID is now associated with my MacBook Pro using its serial number?

Can you what Apple ID is now associated with my MacBook Air using its serial number?


Error trying to install wine in Ubuntu 14.10: missing or conflicting packages


ubuntu 17.10 automatic suspend while playing videos

How to prevent the screen lock while watching video (Netflix, Youtube, Amazon Prime) in Ubuntu 17.10


Why does R-Squared change with a no-intercept model?

Removal of statistically significant intercept term increases $R^2$ in linear model


PHP sort array with names: 1.1.10 after 1.1.2

PHP - sorting an array of filenames with numbers?


Convergence of improper integral $\int_0^{\infty} 1/(1+x^4 \sin^2(x)) \,dx$


"Unexpected token o" when using $.parseJSON


Why do harmonics occur when you pluck a string?


using reduce for an equation and an inequality. what does the # in my outcome mean?


I can't share Wi-Fi from my macbook air 2017


Minimal polynomials and characteristic polynomials

When are minimal and characteristic polynomials the same?


Does ‘do’s and ‘don't’s look correctly punctuated, i.e., curly single quotes around each word and a single straight quote in ‘don'ts’?

What is the best way to mention a word: italics, quotes, or single-quotes (apostrophes)?


How can I write SQL for a table that shares the same name as a protected keyword in MySql?

Syntax error due to using a reserved word as a table or column name in MySQL


Arguable ("susceptible to doubt") vs arguable ("susceptible to being supported")


Differences in jQuery's callback approaches

jQuery.ajax handling continue responses: "success:" vs ".done"?


Question marks showing up while trying to reference equation

Cross-referenced equation never becomes defined


Adjoin inverse element to $\mathbb{Z}/12\mathbb{Z}$


i am having problems with the java double data type

Why do I see a double variable initialized to some value like 21.4 as 21.399999618530273?


download windows 7 and windows 8 free and create a dvd with autorun

Where can I download Windows 8 legally, from Microsoft?


How to make the SELECT statement work with UTF-8


How to clear a zombie process whose parent is init (PID 1)?


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


Does the LaTeX $\eqslantless$ symbol, or the comparable Unicode ⋜, have a well defined meaning for binary numerical relationships?

Meaning of $\geqslant$, $\leqslant$, $\eqslantgtr$, $\eqslantless$


Proof of derivative of convolution $(h * f)' = h' * f$


Why I am getting different $R^2$ from R LM and manual calculation?


What does this construction mean in java?

How are Anonymous inner classes used in Java?


Dedicated-purpose, single application linux boxes

How to create a custom Linux distro that runs just one program and nothing else?


Left Shift/Control/Option keys don't work

Keyboard key stuck or not being recognized; how to fix


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Why do my LED lights stay on, even when the switch is off?


Css force div to fill the space left between it and footer

Make a div fill the height of the remaining screen space


Drush crashes after "command dispatch complete"


How to add Android Studio to the launcher?


Why won't the first door in Saarthal open?


With arrays, why is it the case that a[5] == 5[a]?


ObjC/Cocoa class for converting size to human-readable string?


"England (have/has) been the weaker side..."?


Recurrence for $\int \left(\frac{\sin x}{x}\right)^n \, \mathrm{d}x$

Closed form for integral of integer powers of Sinc function


How to refer to a range of items on a list on python?


How can I find out what app is running (actual name, not published name)?

How do I determine an application's process name?


Connecting point to another through 'road' node using Routing and OpenLayers?


Problems with screen in Windows 7? Graphics gets stuck

Menu select item stuck on screen after context or command menu has closed


What's the difference between if(!$variable) and if(isset($variable))?


Necessary and sufficient condition for $x^n - y^m$ to be irreducible in $\Bbb C[x,y]$

$X^n-Y^m$ is irreducible in $\Bbb{C}[X,Y]$ iff $\gcd(n,m)=1$


What does the phrase "Underfull \hbox (badness 10000) in paragraph" actually mean?


Can Griphook plea against Gryffindor's magic to have it removed?

Who was the rightful owner of the Sword of Gryffindor?


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What determines a creature's native plane for the Banishment spell?


Calling a space a set - abuse of terminology?


How to show that a polynomial has real root between two given values?


Do I need a comma when I want to write "Good morning John"?

Do you always have to put a comma before someone's name?


What is the difference between "citizen" and "denizen"


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Is it possible to have two Win 10 user accounts running simultaneously, with one used locally and one used via RDP?


Should I keep my laptop plugged in as much as possible?

Is it better to use a laptop on battery or on AC power?


Why can't i delete file when i have the file's ownership?


Why is my python 2D list being created with duplicated rows

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


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Is it possible to change the default style used by CAST/CONVERT when converting DATETIME?


Proving that $K\otimes_{\mathbb{Q}}\mathbb{C}\simeq \prod_{\tau}\mathbb{C}$

Neukirch’s Number Theory – why is $ℂ \otimes_ℚ K → K_ℂ,~z \otimes a ↦ (j(z)a)_τ$ an isomorphism?


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Ubuntu 14.04, Intel Chromebook, no sound


How to convert a scientific manuscript from LaTeX to Word using Pandoc?


Are "there is" and "there are" with a compound subject, both correct?

"There Is"/"There are" depends on plurality of the first list element or not?


How do I properly access Windows software RAID 0?


What moves an object? Momentum or Kinetic Energy?

Newton's third law does not apply to the kinetic energy formula?


Using IN clause with variable scalar in SQL Server


Call to undefined function openssl_random_pseudo_bytes() XAMPP


EM Fields Transmitted from an antenna and photons

How can we interpret polarization and frequency when we are dealing with one single photon?


Why does the C++ compiler create an object heap instead of pushing the class object in stack?


Reprojecting lyr file of Tiled Internet Layer created in ArcGIS Online?

Converting ArcGIS Online Basemap to new coordinate system for ArcMap?


When post a question the side bar's position is not fixed while scrolling the page


Stack Exchange chat page is the same as Stack Overflow Chat?

List of chat rooms with host stackoverflow.com is not the same as the actual list of rooms on stackoverflow.com chat itself


Is it possible to browse folders in a jar and if no, why?

Can I list the resources in a given package?


How does gravitational attraction relate to weight?

Is there a difference between Weight and Force of Gravity?


Integrate $ \int \frac{x^2 + x}{(e^x + x +1)^2}dx $

Evaluating the integral $\int \frac{x^2+x}{(e^x+x+1)^2}dx$


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Ships use ice shields to prevent damage from interstellar dust


What are the methods for multivariate outlier detection?

What is the best way to identify outliers in multivariate data?


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Trying to use Threads to fill an array. Program seems to skip a lot of elements


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Is 50 minutes of transit time ample in Amsterdam airport?


How to optimize performance of cluster model without any ground truth?

How to select a clustering method? How to validate a cluster solution (to warrant the method choice)?


Passing an Array to Different Class...Netbeans Java

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


When having a question URL in clipboard, let me navigate to it when opening the app

How to navigate to a specific post in the mobile app?


Command to print the number of *.pdf files in a chosen directory

What's the best way to count the number of files in a directory?


Expandable/collapsible paragraphs in the compiled PDF file


Execute batch & .exe files with Python Code

How to execute a program or call a system command from Python


Unabe to install windows on a ubuntu only machine

How to remove Ubuntu and put Windows back on?


Java PriorityQueue NPE even if the added element is not null?


cannot get logged in username on calling API from javascript


Transfer float values between view controllers


Will there always be integer solutions for $x$ and $y$ in $3^y = 2^x - 1$?

$|2^x-3^y|=1$ has only three natural pairs as solutions


Transposing data from single column list to multi-columns

How to Split one column in Excel into multiple columns of 55 rows


How to tell if Microsoft Works is 32 or 64 bit? Please Help!

Quick way to tell if an installed application is 64-bit or 32-bit


Empty for a group instance is far away from the group

Local anchor for group master (move/translate/offset of group master moves group instances)?


JQuery $.post in a function. Wait for callback to define the return.

How do I return the response from an asynchronous call?


Generate random data based on correlation matrix for multiple timesteps in R


Ajax POST to MVC4 with special characters '&#' does not work

A potentially dangerous Request.Form value was detected from the client - ASP.NET MVC


How to prove that $\lfloor a\rfloor+\lfloor b\rfloor\leq \lfloor a+b\rfloor$

$\lfloor x\rfloor + \lfloor y\rfloor \leq \lfloor x+y\rfloor$ for every pair of numbers of $x$ and $y$


All philosophers are nerds. So, no squares are circles

Can there be a valid argument which has a tautology as a conclusion?


Render looks way different from viewport render mode. How can I fix this?


Get rid of un-realizable space in hard disk Linux

df says I have 20G more disk space used than du. Why?


Why can't I use a variable in Jquery Selector?


How to XZ a directory with TAR using maximum compression?


Null pointer exception on button inside fragment layout android 9

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


php with mysql connection, securing script


What is the canonicity of the new "Lego Star Wars: Droid Tales" TV show?

How is canonicity of derivative works determined for Star Wars?


Collections.sort for multiple conditions

How to compare objects by multiple fields


How to make a form visible or invisible in C#

Why is there a default instance of every form in VB.Net but not in C#?


C++ Error: Multiple definitions of class functions

multiple definition error including c++ header file with inline code from multiple sources


Commercial Dedicated vs Shared Residential Internet

What are some pitfalls of hosting a website from home?


ALERT! /dev/disk/by-uuid/xxxxxxxxx does not exist. Dropping to a shell


Is airline obliged to refund cost of flight if the passenger is unable to fly because his travel visa has been rejected?

Are there any airlines which refund fare (including economy class) fully in case you don't get visa?


installing linguex into a main tex thesis file


How to change IP address using script on Windows?


How to get duplicate items from a list using LINQ?


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Seeking English term for relationship between two members of extended family?


Is it possible to filter/blacklist SE sites?

Filter "Hot Network Questions" by excluding sites


JavaFX Calling a Method Error Between Controllers

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The best way of creating .CSV files in java


What is the standard/recommended font to use in papers?


How to use Class.forName() method in Java with primitive type (int , float, double, char ...)

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Do values attached to integers have implicit parentheses?


A Basic Question about Gravity, Inertia or Momentum or something along those lines


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bash: syntax error near unexpected token `}'


General conditions for a continuous bijection to be a homeomorphism

Continuous bijections and their inverses


CSS stylesheet: style for one button specifically

Which characters are valid in CSS class names/selectors?


MySQL pagination without double-querying?


Why isn't dark matter just ordinary matter?


Motivation to write the dreaded dissertation

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


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reCaptcha v1 is shutting down on March 31, but SEDE still uses it


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how to get a client's MAC address from HttpServlet?


If $R/I \times R/J$ is isomorphic to $R/(I\cap J)$ as $ R $-modules, then $I + J = R$.


Splitting a string in the format domain\alias

How do i split a String into multiple values?


How to follow activity on favorite questions from Android app?


T sql select int value as casting varchar


How do I prove this statement about greatest common divider?

Let $a,k,m$ be integers. Prove that $\gcd(ka,km) = k\gcd(a,m)$.


Allow users with lots of rep (3500?) to promote “comments” to “answers"

What should be done with questions that have been resolved as a comment instead of an answer?


An example of a measure space and a decreasing sequence satisfying this?

Limit of a decreasing sequence of measurable sets.


What is the difference between delegated authentication and single sign-on (SSO)?

How does Delegated Authentication and Federated authentication work in parallel?


Providing Limit condition on Stream generation


How to pass base parameters from an overloaded constructor into the derived class


sum of perfect cubes formula proof without induction

Compilation of proofs for the summation of natural squares and cubes


How to know whether its a tablet or phone in android programmatically?


Number of arrangements of the letters of the word "MISSISSIPPI" if all the S's and P's are separated.

Arrangements of MISSISSIPPI with all S's and P's separated


If $f: \mathbb{R}^2 \to \mathbb{R}$ is polynomial in each argument, $f$ is polynomial

Is a bivariate function that is a polynomial function with respect to each variable necessarily a bivariate polynomial?


If something is halfway in a bag of holding... what happens to it?

Can an item be partially contained in a bag of holding?


passing argument to addEventListener gives 'undefined'

What is the scope of variables in JavaScript?


Can you download Android applications with Ubuntu?


Cannot get Atheros AR9285 to work on 12.10


Javascript date function for monthly subscription


Is there any Ubuntu command video course?

Video introduction to linux command line


Let $G$ be a group. Prove that IF $x^2 = e$ for all $x \in G$, then $G$ is abelian.

Prove that if $g^2=e$ for all $g$ in $G$ then $G$ is Abelian.


Where does Eleven's mind go when she is in the sensory-deprivation tank?


Inner product of two continuous maps is continuous


Can we say say something is going somewhere if it was delivered?

"going to" definition, does it imply intent?


How do you make a kosher substitute for Beurre manié to serve with meat?

Kosher alternative for butter as emulsifier


Prove that $G$ is isomorphic to $\text{Inn}(G)$ if $G$ has trivial center $Z(G)$.

Detail in bijection between Inn(G) and G/Z(G)?


Date Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM OverFlow error SqlBulkCopy

Error - SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM


Literature on Quantum Field Theory/Standard Model Physics?

Books for particle physics and the Standard Model


Where can I find Dogmeat after dismissing him to Sanctuary Hills?


How to evaluate formula passed as string in PHP?


Counts of Votes Cast on Profile page not matching under IMPACT and on votes tab?

"Votes cast" should include votes on deleted contributions


Can't find the result of $ \sum_{n=0}^{\infty} \frac 1 {n(n+1)(n+2)}$

Find the sum of the series $\sum \frac{1}{n(n+1)(n+2)}$


Why is flash TTL metering independent from ambient light metering?

How do TTL flash metering systems calculate how much power is needed?


Why ldap user on ldap client must have root ldap password in his config?


Wouldn't be cool to have desktop notification?

Add desktop notifications for Chrome or Firefox


Cannot parse bibliography items in biber

LaTeX doesn't recognize "et al." in the Bibliography


no space in disk : sudo apt-get clean not working


What is the equivalent of reciprocal but for the sum instead of the product?

1 minus percentage: What is this called?


Does the username need whitespace after for the notification to work?


My ssh key doesn't work, permissions look good

Why am I still getting a password prompt with ssh with public key authentication?


Ubuntu is stuck at a blinking cursor while starting in Oracle VM

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


What is the purpose of a zero length array in a struct?

What's the need of array with zero elements?


How to get an enum value from a string value in Java?


How to find total number of questions closed by each reason?


EXE files. How to run exe files in ubuntu?

Running an exe without calling "wine" cmd


Is a Java array of primitives stored in stack or heap?


Measure the size of a PostgreSQL table row


Apache shows index of/ instead of default index html

Where to place my local website starting with the 2.4.7 version of apache2?


java .getText() doesnt work in IF statement


Can someone provide more details about deleting?

How does deleting work? What can cause a post to be deleted, and what does that actually mean? What are the criteria for deletion?


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


Error occurs while running Eclipse Emulator

Android error: Failed to install *.apk on device *: timeout


Why 0.33... is the only expression of 1/3?

Rigorous proof that $\frac{1}{3} = 0.333\ldots$


Has George Lucas ever explained why Obi-Wan doesn't remember R2?

Why didn't Obi-Wan remember R2-D2 and C-3PO in A New Hope?


Reliable way for a Bash script to get the full path to itself

How can I get the source directory of a Bash script from within the script itself?


Pipe command output, but keep the error code

Pipe output and capture exit status in Bash


Better query to select multiple columns into a single output column?

Can I combine the results from multiple columns into a single column without UNION?


How to calculate $276^{246} \mod 323$ without a calculator?


Can three dots be used for context menu?

What is the significance of the three dots "..." on menus and buttons and how to use them right?


Cannot flag as duplicate if there is a bounty

How can we close questions with bounties?


Does the Flaming Sphere spell come with or as a bonus action as a default?

Does an ability or spell grant me the bonus action with which to use it?


Run Executable In Jar With ProcessBuilder

Is it possible to jar up an executable so that it can be run from Java?


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


Python: call to self function not working correctly

What is the difference between class and instance attributes?


Show that $A = \{p\in\mathbb{ Q}^+\mid p^22\}$ contains no smallest number

Choice of $q$ in Baby Rudin's Example 1.1


How can i ignore a space in file name using if condition

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


Finding frequency of oscillation of an particle by Fourier analysis of the trajectory

Fourier Transform to help guess with NonLinearModelFit


Java: LinkedList Insertion returns 'list is empty'

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


Generating / viweing XML content in bar,pie charts : Java


How do I remove the OneDrive folder from my File Explorer folder tree in Windows 10?


Paradox of weight increasing with relative velocity


What is the "time" mean in the command line arguement "time node app.js"?


"cannot access archive: No such file or directory" when installing a package using dpkg


Fan fiction where Harry Potter is wrongly sent to Azkaban


Iterating through a Collection, avoiding ConcurrentModificationException when removing objects in a loop


Group of order 35 must have a normal subgroup of order 5 or 7 or both without using Sylow’s theorems

Groups of order $pq$ without using Sylow theorems


Show that the ideal generated by a polynomial and a prime is maximal

Show that $x^2+x+4$ is irreducible over $\mathbb Z_{11}$.


What are these symbols called in the English language?


JavaScript: Global variables after Ajax requests

How do I return the response from an asynchronous call?


Program will not execute unless using System.out.println()

Java code needs a system.out.println statement to run


Performance Counter - Rate per minute type?

Why is the graph spiky when using average?


How do I remove duplicate records in a join table in PostgreSQL?


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


Associatively sorting a table by value in Lua


How do I navigate between directories in terminal?


Should I write "a n-tuple" or "an n-tuple"


File exists but not visible from other programs

Why different processes see different instances of the System32 folder?


How do I pass a variable from JSON to the originating Javascript?


What's the meaning of using Bootstrap? Why should resampling from sample set have any difference?

Explaining to laypeople why bootstrapping works


How to create a composite Primary Key on a Table

How do I specify unique constraint for multiple columns in MySQL?


Why do buttons with ChoiceDialog freeze the front end?


Troubleshooting XCode 12.4 Installation (MacBook Pro, Big Sur 11.1)


How to prove A→B is equivalent to ¬B→¬A?

$(A \implies B) \implies (\neg B \implies \neg A)$?


ModelMapper TypeMap duplicating integer matches in DTO and causing exception


IndentationError: unindent does not match any outer indentation level (duplicate)


Is there a log for sshd where I can see who has used ssh to access my PC?


how to judge client's network off-line or online use JavaScript?

Detect the Internet connection is offline?


Is there a way to fix the Invalid Session error?

Failed to Login : Invalid session (Try restarting your game) Minecraft Error


How to join first letter of a list with all the letters of another and print it

Get the cartesian product of a series of lists?


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How can I vertically align elements in a div?


Should we balance the data set if the data is intrinsically unbalanced?

Does an unbalanced sample matter when doing logistic regression?


kill Ubuntu 13.10 then install 14.04 fresh


Do technical indicators actually work while analyzing stocks?

Effectiveness of technical analysis techniques: Any supporting studies?


Does moving a grappler away from its target break the grapple?

Does shoving a creature break its grapple on another?


Marking someone elses question as answered

Allow users to mark "accepted" answer on someone else's question?


Prove $\exp(x+y) = \exp(x) \exp(y)$ for $\exp(x) = \sum_{n=0}^\infty \frac {x^n}{n!}$


Tool to determine what has locked a file

How can I identify what application is using a given file?


Stop async dispatched queue on button clicked iphone

Objective-C, cancel a dispatch queue using UI event


Creating table names that are reserved words/keywords in MS SQL Server


How do you reindex an array in PHP but with indexes starting from 1?


When would I use a voltage regulator vs voltage divider?


What about this code introduces an SQL injection vulnerability?


How many shuttles does Voyager have, not including The Delta Flyer


How to get a part of string with regular expression


Target Packages (main/binary-amd64/Packages) is configured multiple times with Ubuntu 16.04

How can I fix apt error "W: Target Packages ... is configured multiple times"?


Can a large file be hashed down to 32 bytes, and then reconstructed from the hash?

Would it be possible to generate the original data from a SHA-512 checksum?


PHP - New numbered var for every object in array


Send an invitation and let the user create their own password

Is there a correct gender-neutral singular pronoun ("his" vs. "her" vs. "their")?


I'm trying to get a toString to print out in a group together after a loop is cancelled


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While-loop ignores scanf the second time


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tikz cd: ! I can't find file `librarycd.code.tex'


For how long have I been banned by Singapore immigration?

Does being refused entry to Singapore mean I am now blacklisted?


Error LNK2001 in Visual Studio 2017 when using static int

How to initialize private static members in C++?


Induction proof dealing with geometric series

Proving the geometric sum formula by induction


I can't see any faces of any object at all. Can someone explain why?

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


Mint 18 will boot only to a black screen

I messed up bashrc codes and reboot the Linux mint to black screen


Choosing between std::map and std::unordered_map

Is there any advantage of using map over unordered_map in case of trivial keys?


The existence of orthonormal basis in the dense subspace

A complete orthonormal system contained in a dense sub-space.


Can object pronouns and possessive pronouns be used side by side without a preposition?


What is the probability that there is at least one head and at least one tail?


I overstayed for 1 day in South Africa and got 'undesirable' but I have to transit through the Johannesburg airport

Transit Visas for South Africa Undesirable-Overstay Tourists


How do you determine if the series $\sum\limits_{k=1}^\infty \left(1-\frac1k\right)^{k^2}$ converges?

Convergence of $\sum _{k=1}^\infty (1-\frac{1}{k})^{k^2}$


unable to find a medium with a live file system in ubuntu 14.04 using wubi Windows installer

Error when installing: "unable to find a medium containing a live file system"


NullPointer during unit testing method responsible for retrieving data from file

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


How could I figure out the shortest way to turn, and whats the angle?

How can I calculate the angle and proper turn direction between two 2D vectors?


LINQ to Entities does not recognize the method 'Boolean Contains(Int32)' method

'Contains()' workaround using Linq to Entities?


If $Y| \mu \sim N(\mu, A)$ and $\mu \sim N(\mu_0, B)$, showing the marginal of $Y$ is $Y \sim N(\mu_0, A+B)$

completing the square for Gaussian multivariate estimation


Prove that $n<2^n$ for every positive integer $n$

Basic mathematical induction regarding inequalities


Does there always exists an injective homomorphism from $G$ into $S_m$ for $m<n$

Group homomorphisms and which of the following statements are true (NBHM-$2014$)


Is there a way to know how long is left until I can post another question?

Tell rate-limited users how long they have to wait before asking a new question


Does a photon in vacuum have a rest frame?


CSS content generation before or after 'input' elements

Can I use a :before or :after pseudo-element on an input field?


Show that $\mathcal{O}_{\mathbb{P^1}}(-1)$ has no nonzero global sections.

Global sections of $\mathcal{O}(-1)$ and $\mathcal{O}(1)$, understanding structure sheaves and twisting.


why is the output of the following code coming to be zero?

printf specify integer format string for float


Find all $f:\mathbb{R}\rightarrow\mathbb{R}$ for which $f(x^3)+f(y^3)=(x+y)(f(x^2)+f(y^2)-f(xy))$

Strategies to find the set of functions $f:\mathbb R\to\mathbb R$ satisfing the functional equation: $f(x^3)+f(y^3)=(x+y)(f(x^2)+f(y^2)-f(xy))$


Aero - Windows 7 aero themes are greyed out

Windows 7 Aero theme's "greyed out" - no found fix


Text editor to handle extremely large files

Text editor to edit large (4.3 GB) plain text file


I can not use regex to replace text contain "\" character

How to escape text for regular expression in Java


How do I force implementations of a method to be inside a try-catch block in Java?

Why can't overriding methods throw exceptions broader than the overridden method?


Convergence of series with $\sin(\sqrt{n})/n$

Convergence of $\sum _{k=1}^\infty \sin \left(\sqrt{k}\right)/k$


Is there a tool similar to spotlight search in OS X for Ubuntu? (specifically Ubuntu 12.04)

What are the alternatives to OS X's Spotlight?


Writing an instance(s) of a class in a file in json or xml

Scala 2.10 + Json serialization and deserialization


Getting different results with `Abort` run in the documentation window vs a notebook (probably newlines)

stop notebook evaluation when Assert fails


Elementary set theory - are these sets empty?

How to prove or disprove statements about sets


'In the Fox Theater' or 'In the Fox theater' or 'In The Fox Theater'

"Holmby hall" or "The Holmby Hall", does the hall have to be capital in either of them?


Why is this statement not changin the array?

Why are these constructs using pre and post-increment undefined behavior?


Find the kernel of a ring homomorphism $f(x)\to f(\sqrt 2)$


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


PHP - how can i access this atribute data ($t)?

How to access youtube data api json response $t variable in php?


How to select JSF components using jQuery?


How can a Python script detect if it is being run in Virtualbox or some other VM?

How to identify that you're running under a VM?


What is the chronological order of the Demigods and Magicians books?

What order should the books in the Percy Jackson universe be read in?


Plot colored spectral lines using spectral line data?


Which is correct: "__ is different from __" or "__ is different than __"?


VBA List databases on specific SQL Server


Asynchronous evaluation of a button's action


Book set on an alien planet with a symbiotic plantlife

90s sci-fi novel with two worlds, one grim another pastoral with the war-cry "Ire, Iron and 'voorstrod'"


Using Chrome's Element Inspector in Print Preview Mode?


Difference between the derivative and differential

What is the practical difference between a differential and a derivative?


Reading and displaying correct utf-8 on windows-python

How to use unicode characters in Windows command line?


Table positioning problem between two paragraph


Fonts and Template File for Journal "Mathematical Notes" by Springer

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


Why does the division of two integers return 0.0 in Java?


How to check whether the image from the specified URL loaded or not

How to create a JavaScript callback for knowing when an image is loaded?


Is there any practical or mathematical difference between player rolling vs. DM rolling?

Is "Unearthed Arcana: Players Make All Rolls" Correct?


SQL Server 2012 mirror setup - how to reduce transaction log files

Why Does the Transaction Log Keep Growing or Run Out of Space?


Removing space created inside my container


Is the curvature of spacetime in General Relativity instantaneous?


Bitwise operation on enum which is not marked by [Flags] attribute

What does the [Flags] Enum Attribute mean in C#?


java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'user' available as request attribute

What causes "java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'command' available as request attribute"?


Strange string appended to typeName in DataContractResolver.ResolveName for generic type

How can I control the name of generic WCF return types?


Does the rank-nullity theorem hold for infinite dimensional $V$?


List all extension-only files and folders

Why does "ls .*" show the contents of hidden directories?


Unable to install Realtek rtl8723de drivers? (networking)


How to make beveled 90 degree corners on a curve better?


Can't access wireless network in ubuntu 12.04

Wireless card Realtek RTL8723AE-BT is not recognized


$ax\equiv b\pmod{\! n}$ has a unique solution if $\gcd(a,n) = 1$


How to find out client ID of component for ajax update/render? Cannot find component with expression "foo" referenced from "bar"


Converting a string into date format in the code behind


How to fix array returning null in one method when values where set in previous method?

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


How do I remove an input language that appears after restart and doesn't show up in settings?

How do I remove automatically added keyboard layouts?


Crossthread operation not valid... - VB.NET


How can I copy or move images from thousands of folders into one folder?

Moving all files of a certain type or extension


Printing very large - can I use my photo from my Fuji XT2?

Is there a general formula for image size vs. print size?


When I use "cout<<setprecision(2)<<fixed<<90.005;" output: 90.00. I expect the answer is 90.01. Can someone tell how to solve that?


still having trouble New Code trying to make rectangle move across screen

Making rectangle move across screen with graphics file


Why are there two of the same program in my applications?

How to remove duplicate entries in dash?


Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException for a string variable


Get the cartesian product of a series of lists?


$\displaystyle \int e^{-2x^2-5x-3} \mathrm dx$ with seemingly inescapable trap

Proving $\int_{0}^{\infty} \mathrm{e}^{-x^2} dx = \frac{\sqrt \pi}{2}$


How to get items between elements from a list?


What's the proper ArcPy usage of 'TemplateExtent' in CreateFishnet_3d?

Creating fishnet from template feature class using ArcPy?


How do I prevent objects in a collection at the same position from sticking together?

Why can't I transform faces, edges, or vertices without transforming the whole object?


Do I need a visa to transfer flight in Seoul (Incheon Airport)?

Chinese Passport Holder Transit in South Korea


I am getting the black screen in startup

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


Proving Modified Taylor expansion of $e^x$ (negative sign for odd powers) is always positive when n is EVEN.

$P_n(x):=1+ \sum_{m=1}^n\dfrac{x^m}{m!}$ has no real root for even $n$ and exactly one real root for odd $n$


Python - Create constant array of unique elements

List of lists changes reflected across sublists unexpectedly


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


Split string into array of character strings


MySQLSyntaxErrorException when trying to execute PreparedStatement

MySQLSyntaxErrorException near "?" when trying to execute PreparedStatement


Regression Analysis with String values in column of DataFrame

which predictive model should I use if column is having string values?


How to find difference between values in two rows in an R dataframe using dplyr

Beginner tips on using plyr to calculate year-over-year change across groups


To find all $n$ such that $(n-1)!+1$ is a perfect power of $n$


Warning: Expected ‘int **’ but argument is of type ‘int (*)[(sizetype)(n)]’

How is memory allocated for an implicitly defined multidimensional array in C99?


the best practice for performance bettween using parameter in url ?p=2 and Managed bean

ViewParam vs @ManagedProperty(value = "#{param.id}")


How to avoid the hyperlink on a particular \ref


Did Harry Potter buy a new wand after the war?

Why did Harry not repair his wand in the movie?


Getting attributes from arrays of objects in NumPy


What's the difference between => , ()=>, and Unit=>