Refusal of Tourist Schengen VISA - Twice - Italy Embassy

Schengen visa refused from German embassy


Accidentally ran non-recursive chmod 754 at root directory level

What if I accidentally run command "chmod -R" on system directories (/, /etc, ...)


why can't electromagnetic waves make through holes that are smaller than the waves wavelength


How do I use variables in a sed command?


notebook or desktop PC for datamining projects

What is the current 'standard' for modern statistical computing hardware?


Understanding use of string function count()


Change color of shadow for an ImageView on Android


xdg-open tries to open URLs as files on LXDE

xdg-open on debian 9 fails to open browser


Creating a leaf material that shows transparency from UV image (Blender Internal)

How to use an alpha map in Blender Render?


Proving that matrix is similar to its transpose

Matrix is conjugate to its own transpose


Confusing about passing by refrenece in js object

Is JavaScript a pass-by-reference or pass-by-value language?


How can I round to two decimal places in Java?

How to round a number to n decimal places in Java


Whats the difference bw baggage and luggage


Markov chain on an $n$-dimensional hypercube?

Expected hitting times for simple random walk on a hypercube


arabic echoing substr it gives me ? mark on end of my data been echoed

php substr() function with utf-8 leaves � marks at the end


How do I stop the ticking noise coming from my furnace duct?

How can I stop our duct work "pinging" at night?


Holomorphic $f$ and $g$ such that $e^{f(z)}+e^{g(z)}=1$ on $\mathbb C$

Entire $f$ and $g$ constant if $e^{f(z)}+e^{g(z)}=1$


Why variables are not behaving as same as method while Overriding.?

why java polymorphism not work in my example


"Value was fetched successfully" or "Value is fetched successfully"?

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


Question from pathfinder for Olympiad mathematics 2

If $a$, $b$, $c$ are the roots of $x^3-6x^2+3x+1=0$, find all possible values of $a^2b+b^2c+c^2a$


How do I disable Aero Shake in Windows 7?


Deleting a comment (mine) shouldn't count as a comment vote


How to install OpenLayers plugin on QGIS 2.4?

How to access QGIS Plugin Repositories from behind a proxy?


FillBetween library sometimes works and sometimes does not

Fillbetween library has different effect based on plot contents


How to know which radio button is selected in jquery?

How can I know which radio button is selected via jQuery?


Make a POST request with parameters and an attached file

Flex HTTPservice and POST, Sending Files?


What is the bounty expires message trying to tell me, when it shows up on a question with no answers?

Disable bounty-related notifications, if there is no answer to award bounty


Unable to install Anaconda on Ubuntu 16.04

I want to deinstall and clean up after a partial Anaconda install


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


javascript click function doesn't work for ID and Class?

Event binding on dynamically created elements?


How do you determine how much to ask for when someone wants you to photograph a wedding?


New comment notification should be skipped if I'm known to have seen it

"add/show comments" should dismiss notification


Let $X$ be a metric space $\mathcal{G}$ an open subset of $X$ and $F \subset \mathcal{G}$ finite. Show that $\mathcal{G} \setminus F$ is open.


A formula for the power sums: $1^n+2^n+\dotsc +k^n=\,$?


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


How much is a sim card at heathrow, and what network should i use

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


What does $t_0$ mean in constant acceleration equations?


Passing an object from JSP page back to Servlet


If $K$ is closed and bounded, then it is compact.

$K \subset \mathbb{R}^n$ is compact iff it is closed and bounded


Add a non-breaking space to "reopen (1)" and its ilk


How come def processes *args in the call is alway a tuple?

What does ** (double star/asterisk) and * (star/asterisk) do for parameters?


Styling lines depending on several attributes

Using two fields to control display format on map in QGIS


Reload Functions Without Restarting Server

How to build Twisted servers which are able to do hot code swap in Python?


How do I use Proportional Edit Correctly?


How to restrict the use of variables to the notebook?

Is there a way to separate variables between multiple notebooks?


Bolzano-Weistrass theorem true in any vector space?

In what spaces does the Bolzano-Weierstrass theorem hold?


Refusal of UK visitor visa - what went wrong and how to avoid reoccurrence?

UK Standard Visitor visa refusal: what went wrong?


What is the difference between these ways of declaring an array in Java? Is one of them better over the others?

Difference between int[] array and int array[]


How to prevent storing domain name in href = $('a#myId').attr('href'); in IE7

Wrong extraction of .attr("href") in IE7 vs all other browsers?


How to upgrade to a point release from the same base release (12.04 to 12.04.03)


NullPointerException when getting values from config file BukkitMC

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


How to keep clean corners after giving bevel to a curve

How to make beveled 90 degree corners on a curve better?


How can I handle two separate file part as one (mount, virtual join, etc)?

A virtual file containing the concatenation of other files


Selecting features with NULL attributes in QGIS?


define variable with/without var prefix in javascript

What is the purpose of the var keyword and when should I use it (or omit it)?


How do I manage combat situations without a physical map?

D&D 5e and "Theatre of the Mind" in combat


PInvoke vs CLI wrapper, C++ functionality to C#


Why you can't connect two power supplies of different voltage and/or current ratings in parallel nor series?


Shimano A520 SPD Touring Pedals cant clip out :-(


My website title shows up slightly different from what's in my title tag, only in Google search

Title tag different from title appearing in Google?


How can I double the newlines in an output stream

How do I add newlines between lines printed on the command line?


Short story of an animated dead man in a world with no fear of death

What Ray Bradbury story contains a line about autumn burning the land?


Will an Ubuntu "daily build" version automatically become a fully functional stable version when it's officialy released?

I installed an alpha or beta, am I up to date with the final release if I keep upgrading?


Cortana Search is not finding applications on Windows 10


How do you change your screen's color temperature?


Can I keep home-made salad dressing un-refrigerated?

How long will homemade salad dressing stay good in the fridge?


How to make special new folder in right click?

How do I customize the context menu in Nautilus?


How to set the current working directory?

Equivalent of shell 'cd' command to change the working directory?


"Unable to Process Request Concurrent requests limit exceeded". Is there a way how can I overcome this error?

Concurrent requests limit exceeded - how to find the problematic code


When i use texture paint, it doesn't show when i render it

Edited texture not replacing old texture in render


Algorithm optimization to find possible aminoacid sequences with total mass m

Finding Combinations to the provided Sum value


Writing test case for class that has a process flow

Method defined as testMethod do not support web service callouts, test skipped


How to calculate force on impact after free fall in water

How to calculate impulse force of body hitting water?


When I import an OBJ it won't show up, does anybody know how to fix it?

Why when importing an obj file nothing appears even when zooming?


Java org.testng.TestNGException: Cannot instantiate class

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


Finding A Function For The Harmonic series

Is there any formula for the series $1 + \frac12 + \frac13 + \cdots + \frac 1 n = ?$


Possibility of mass update using Salesforce Rest api

What to use for performing operations on multiple records at once, Apex REST class or Bulk API?


Division error in python, result is incorrectly rounded

How can I force division to be floating point? Division keeps rounding down to 0?


How to echo runnable app path, registered in Windows environment variable

Is there an equivalent of 'which' on the Windows command line?


Why does cin need newline to be entered?

Capture characters from standard input without waiting for enter to be pressed


A verb meaning "Answering question in a way that doesn't answer it"


Anybody knows if exists an open-source SQL parser?


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


Physic simulation hitting non existing face

Rigid body physics problem even a torus acts like it had no hole in it


Is there any way to convert a .py file to .bin file

Is it feasible to compile Python to machine code?


How to concatenate a std::string and an int?


java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.search.cfg.Environment

Why am I getting a NoClassDefFoundError in Java?


Why does Stack Overflow use two trackers unlike other Stack Exchange sites and for what purposes?

Are some SE web tracking beacons more important than others?


Converting a string to a numerical value

How to extract a floating number from a string


Swift UIColor initializer - compiler error only when targeting iPhone5s


JavaFX : NullPointerException when clicking Button

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


How to count the number of occurrences of an element in a List


How to make a script wait for another script to finish reading a file


Given that $p(x)$ is a polynomial of the form $x^n + a_{n-1}x^{n-1}+ ... + a_1 x + a_0$, where $a_1, a_2, ... , a_n$ are integers

Proving Gauss' polynomial theorem (Rational Root Test)


after rendering why I'm getting fuzzy, unclear image, even though I kept 100% resolution and sample 128 , mipmaps is uncheck


prove $\int_a^\infty xf(x) \, dx \ge\int_a^\infty af(x) \, dx\,, \quad a>0, \, f\ge0$

In Markov inequality proof, why is $\int_a^\infty xp(x) \, dx \ge \int_a^\infty ap(x) \, dx$


Can't stop eggs from sticking to stainless steel pan

Trouble frying an egg on a stainless steel pan


How create a conditional function based on the current folder that I am accessing in vim?

Vim: apply settings on files in directory


Placing lever on specific stained clay colors?

How do I give myself an item that can only be placed on a block with a certain damage value?


Converting point layer to raster grid that shows frequency of points per cell uisng QGIS


Why not consider rate of change of acceleration?

Is it possible to have a rate of change of acceleration?


No section number and title be printed in PDF output in LaTex


Where do we draw the line on esoteric tag additions?

tags of mundanity that are gratuitously applied to posts


C++ delete - It deletes my objects but I can still access the data?


How to get the length of a json returned data and run a for loop

How do I loop through or enumerate a JavaScript object?


YouTube crashing Shockwave Flash in Chrome


How to get intuitive understanding of common fundamental distributions

Real-life examples of common distributions


How to safely upgrade from an older Ubuntu version to a newer one?


Continuous function and induced homomorphism

3-manifold examples of homomorphisms between fundamental groups that are not induced by continuous maps


Groups of order 12 that aren't isomorphic


Is the definite article 'the' necessary in front of seasons?

Where is "the" used? Is there a rule? Why no definite article in "Shops are open late in summer"?


Convert CSV to Shapefile using GDAL_translate


Where does the energy when a photon hits an electron but the electron doesn't doesn't gain enough energy to change level?

photon electron interaction such that the photon energy does not correspond to any state change


jQuery animate({left:"+=10"}) not working


I am not using nor with neither is that fine or it is grammatically incorrect?


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


How to log in to Stack Overflow if I lose my Facebook account?

How will someone be able to log in if they removed their Facebook account and ...?


Get Opportunity Line Items with Opportunity


Hit rep cap, but didn't get the R-E-S-P-E-C-T hat


How can I define more than one spawn point?

How do I make multiple spawn points in minecraft vanilla?


Review window (without edit privs) silently fails on attempts to edit when another is pending

Editing a post during review doesn't show an "edit not possible" message


OS X Internet Recovery doesn't see SSD drive


Remove the x-axis ticks while keeping the grids (matplotlib)


Should I use PDO to sanitize my Sql queries or is "mysql_real_escape_string" enough?

Why is PDO better for escaping MySQL queries/querystrings than mysql_real_escape_string?


Allow UILabel to truncate text, but at word boundary

UILabel truncate tail and skip not complete word


Create new lists from elements of a list

How can I create lists from a list of strings?


Prove $Aut(G) \cong \mathbb{Z}_n^{\times}$ where $G=(\mathbb{Z}_n , +)$.

$\operatorname{Aut}(\mathbb Z_n)$ is isomorphic to $U_n$.


How do you extrude a shape without outer faces and edges?


Could a man float in a large enough magnetic field to simulate zero gravity?

How strong of magnetic field would noticibly attract a person?


Convert specific columns to rows with some other columns


Downgrade Nexus 9 running lollipop to KitKat

Can I downgrade to an earlier version of Android after installing an OTA update?


Workaround for lack of 'nameof' operator in C# for type-safe databinding?


Would installing a solid state drive improve my load time in Rainbow 6: Siege?

Rainbow Six Siege Insane Load times? Computer or Internet?


What would be a Philosophical Implications of Relativity Theory?

What are some philosophical implications of relativity?


Find the second focus of an ellipse given one focus, the point furthest from it, an arbitrary other point on the ellipse


Use network reputation rather than site reputation for reminding users to accept answers

Don't Remind Me to "Consider Accept Answers" on StackExchange


Multiple Child domain under a single Forest

How to hide a trusted domain in the logon screen?


Mutlivariable integral, How to compute it?

Multivariable Integral, How to compute it?


Any way to automatically delete files created in a folder once any file is 30 days old?

Auto deleting files older than given minutes on Windows


CentOS web server move hdd to another computer


Every Vector Space is Regarded as a Vector Space Over a Given Field.

Why do we call a vector space in terms of vector space over some field?


can't modify global 2-D matrix in python properly

List of lists changes reflected across sublists unexpectedly


How to refer to a cell's content from a query in Google Spreadsheets?


Is it usual to ask for several references for postdoc positions?

Who to cite as referees for a post doc position?


What is the best way to parse html in C#?


Prove that $\sum_{k\ge 1}\frac{kg(x^2)}{1+k^3[g(x^2)]^2}$ does not converge uniformly on the real line

Uniform convergence of $\sum\limits_{k=1}^{\infty}\dfrac{kf(x^2)}{1+k^3f(x^2)^2}$


sudo apt-get --install-suggests install git fails

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


Black window covers almost the entire desktop / screen

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


In-depth explanation of the difference between "will" and "going to"?


Notify me when a bounty is placed on one of my questions

Can there be a notification for bounties started on questions you've asked or answered?


is this the reason why current doesn't flow over a resistance if there is another path without resistance?

Why doesn't current pass through a resistance if there is another path without resistance?


If $F_n$ is the Fibonacci sequence, show that $F_n < \left(\frac 74\right)^n$ for $n\geq 1.$

Prove that for all $n\geqslant 1$ we have $F_n<{\left(\frac 74\right)}^n$.


Why does ps output show a process even if it is not running?


How does "dragon branch ads" get installed on a PC?

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


How to install Canon 2525 on Ubuntu 18.04?

How can I install a Canon printer or scanner driver?


ConTeXt: Flush right formula numbers in cases environment


Custom WebApp not appearing in Unity Launcher

How can I edit/create new launcher items in Unity by hand?


Tikz double line core color transparency


Package natbib Error: Bibliography not compatible with author-year citations


Run Tests not available in Force.com menu in force.com IDE

Force.com IDE 35.0.0.201510211056 in Eclipse missing run test class option


Short story where criminals were imprisoned in a mountain with a huge spinning wheel

Looking for story about huge underground revolving prison


How to put Black as the background colour, and text as white in Mathematica?


LD_LIBRARY_PATH is unset somewhere, but where?


What can I do if the reviewers' comments on my manuscript are not correct?

Referee says the proof is wrong, but it is not, what to do?


How can I change my code to accept user inputs

How do I parse command line arguments in Java?


Why there isn't a way to raise a spam flag on SE blogs?

Is there a way to report spam, or OT comments on Stack Exchange blogs?


Can Jon be released from his vow to the Knights Watch?


Convert a string with date and time to a date


Lagrangian formulation compared to the Newtonian formulation: connection high schools with the universities

Advantages of Lagrangian Mechanics over Newtonian Mechanics


How To Convert a Terminal Command into an ".app" file?

How to create an OSX Application to wrap a call to a shell script?


preseasoned pan - now blackened and chipping


How to model effectively using exact measurements?


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


Failed to save undefined: No COMPONENT named markup://svg found :


Regex matching URL with www and no consecutive dots


Do I need a license to create a PDF and send it over e-mail?

Do I need a license to create pdf files?


Prove that $b_n$ converges if $a_n$ converges and $a_n+b_n$ converges

Prove: Assume $\lim_{n\to\infty}(a_n)=a, \lim_{n\to\infty}(b_n)=b$ then $\lim_{n\to\infty}(a_n+b_n)=a+b$


Non-EEA family member visiting UK for work?

Can a US Citizen work whilst travelling in UK?


Why will two bubbles floating on water surface attract each other?


How to prove the expression is not a square in the following question

Let $d$ be any positive integer not equal to $2, 5,$ or $ 13$ , then $\exists a, b \in \{2, 5, 13, d\}$ such that $ab − 1$ is not a perfect square?


How to set auto-replies for certain days in Microsoft Outlook?


MATLAB error: Undefined function or method X for input arguments of type 'double'

"Undefined function 'function_name' for input arguments of type 'double'."


Why do some community wiki posts say "unknown"?


How to select appropriate ferrite beads for power supply rails

How do I choose a ferite bead for power supply filtering?


How to pass values from one page to another in jQuery


How do I add myself back as a sudo user?


preview windows from dock for switching between PDF documents

Switching between windows with scroll wheel on Ubuntu Dock


create a .deb Package from scripts or binaries


Add values from a list, at positions from a list, to a matrix


How to fix the width/length of ytick label in pgfplots?

pgfplots: colorbar: align y ticklables to the right


How could a non-convex volume joining the outer points of a 3D anatomical model be created?

How do I create a triangulated surface from points?


Why am I unable to save my output to a file from a command that takes input as the file itself?

Can I read and write to the same file in Linux without overwriting it?


How can (easily) superimpose different text over odd/even pages of an included PDF file?

How can I superimpose LaTeX / TeX output over a PDF file?


how to determine if a div has become taller than the viewport

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


Views changefilter/argument when no results occur

Conditionally run a view if another view has no results


What oil to use when cooking steak, and what difference does it make?


How can I format a var_dump's output for use as a variable?

How can I capture the result of var_dump to a string?


The relationship between $\psi$ and $\bar{\psi}$ in QFT

Can we treat $\psi^{c}$ as a field independent from $\psi$?


Prove that $\limsup(a+b) \leq \limsup(a) + \limsup(b)$ and $\liminf(a+b) \geq \liminf(a) + \liminf(b)$

Prove $\limsup\limits_{n \to \infty} (a_n+b_n) \le \limsup\limits_{n \to \infty} a_n + \limsup\limits_{n \to \infty} b_n$


How did Harry Potter treat his Aunt Petunia in her old age after he became successful given that he was mistreated as a boy?

Did Harry ever visit the Dursleys in adulthood?


'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]:

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


How to access JSF application-scoped managed beans from an HttpSessionListener?

Get JSF managed bean by name in any Servlet related class


Why cannot add an ArrayList into an ArrayList?

Is List a subclass of List? Why are Java generics not implicitly polymorphic?


After changeing source.list file from web site http://repogen.simplylinux.ch/ sudo apt-get update is not working, earlier also it was not working

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


Uploading a document manually to a SharePoint document library using Jquery

jQuery & SP2010 : Upload document to library using jQuery?


Weird variable scope in Python when using try/except

Reason for unintuitive UnboundLocalError behaviour


Proving that $(\sup_{x\in R}|f'(x)|)^2\leq 4\sup_{x\in R}|f(x)|\cdot\sup_{x\in R}|f''(x)|$.

Inequality involving the sup of a function and its first and second derivatives


Do the ranged effects of districts or the Colosseum depend on the actual district location or on the city center?


Eeek! Homepage view user details no longer float to the right

Alignment issue for the last modified information in the "Top Questions" page


Is there a way to print this once every minute? I'm not to sure and I'd rather not search it up to get me confused

What is the best way to repeatedly execute a function every x seconds?


Is there a special restriction on commands executed by cron?


Should I submit bank statements when applying for a UK Visa? What do they say about me?


Could light find itself in orbit around an object?


What does $\rightarrow$ mean in $p \rightarrow q$


find the trace and the determinant of an nxn diagonizable matrix

Determining $\mbox{tr}(A)$ and $\det(A)$ as functions of the eigenvalues of a matrix


When/if sensitive people fall in love, they become totally mad

What is the difference between "If" and "When" in a conditional clause?


class ClassName versus class ClassName(object)


How can I change the date and time on Ubuntu?


Python, Unicode, and the Windows console


"E: Syntax error /etc/apt/apt.conf.d/10periodic:7: Extra junk at end of file" how to trouble shoot this?

How to solve "Extra junk at end of file" when using apt?


is paleohacks.com a stack exchange site?


Similarity of real matrices over $\mathbb{C}$


What is so special about speed of light in vacuum?


Does Python have a ternary conditional operator?


What does the @ do before $_POST and $_GET PHP

Reference — What does this symbol mean in PHP?


Trying to boot from USB, but the screen stays on gnu grub version 2.02

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


Hovering over election vote button shows irrelevant information


Restricting speech recognition results on Android


what is the behaviour abstract class and interface in c#?

What is the difference between an interface and abstract class?


Show that for each $n \geq 2$, $\left(1 - \frac{1}{4}\right)\left(1 - \frac{1}{9}\right) \cdots \left(1 - \frac{1}{n^2}\right) = \frac{n + 1}{2n}$


Why do my Tkinter widgets get stored as None?

Tkinter: AttributeError: NoneType object has no attribute


Can Mylan stockholder claim capital loss on Ciatris merger?

What is Mylan stockholder tax responsibility in Viatris merger?


$f(\mathbb{R}\setminus \mathbb{Q}) \subseteq \mathbb{Q}$ and $f(\mathbb{Q}) \subseteq \mathbb{R}\setminus \mathbb{Q}$ imply that $f$ is not continuous


Converting VB.NET's DateTime.TryParse(string, Nothing) to C#

How to explicitly discard an out argument?


Why not make a dark theme instead of time travel joke


Chi-squared Test and Data Representation


Why can't our cognitive sense or five senses sense or fathom hyper-dimensional spaces?

Why are we not able to visualize Dimensions beyond 3 (or maximum 4 including time)?


How do I print out the contents of a vector?


Flagging a comment doesn't count as a review

Why is the [I'm Done] button unavailable after only flagging comments in the First Posts review queue?


Using running time distributions to determine ordering probabilities in horse racing

$P(X_1 < \min(X_i,\ldots, X_n))$ across different normal random variables


Disable all splash graphics/texts on startup and shutdown?

How can I disable the purple splash screen at boot?


From a particle's point of view is his temperature absolute zero

Is temperature a Lorentz invariant in relativity?


"A manual written to help students to understand the module"

What is the correct way to use infinitive after the verb "help": with or without "to"?


Getting a list of locally-defined functions in python

Find functions explicitly defined in a module (python)


How to show the existence, or lack thereof, for $\lim_{x \to 0} \frac{1}{x}\sin\left(\frac{1}{x}\right)$

Evaluating $\lim_{x \to 0} x\sin\left(\frac{1}{x}\right)$ or showing it does not exist


How to read ubuntu installed on the hard drive from the USB device (no recover GRUB)

How can I repair grub? (How to get Ubuntu back after installing Windows?)


Is there any way to tell a difference between a Squib and a Muggle?


Training Neural Network with Highly Correlated Inputs

What should I do when my neural network doesn't learn?


How to generate a pem certificate? in an easy way, for testing

Generate self signed SSL certificate for apache


Javascript - replace pattern but keep alphabets

How can I get at the matches when using preg_replace in PHP?


Any TEX / LATEX Tutorial Specifically Covering MikTeX & WinEdit on a Microsoft Windows PC?

What are good learning resources for a LaTeX beginner?


Coloring $\mathbb R^3$ with 3 colors always gives us a color with all distances.

Coloring $\mathbb R^n$ with $n$ colors always gives us a color with all distances.


How can I join a list of characters into strings of 8?

How do you split a list into evenly sized chunks?


At the beginning of an Ubuntu installation, what means the ”keyboard = human“ symbol?


Can anyone explain what are this numbers `echo -ne "\033]0;Title\007"`

How do I choose what shows up in PuTTY title bar from Linux?


Seeking QGIS tutorials and web resources?


Does GUID (Uniqueidentifier) in ASP .Net ever conflict?


Android app: Editing tags is not supported

Android app should send edits to edit queue if necessary rather than rejecting them


Science fiction story about a "smart house" that made breakfast for the owner

Identify a short story about post-apocalyptic household robots


Which creatures in Tolkien's literature can be female?


Short story, “Seven Century Summer”, where man has an accident and time travels to a future post apocalyptic world

Person falls into radiotelescope and his mind gets transported to the far future


Type 'Debb' is not known on line 1 in source list

"Type 'debo' is not known on line 1 in source list /etc/apt/sources.list.d/spotify.list"


Connect A 3 way swotch to an existing three way switch


When I launch my macOS there running so many interfaces

Surprisingly many network interfaces on macOS: are these legitimate?


Prime Order $\Rightarrow$ Cyclic $\Rightarrow$ Abelian

Show that every group of prime order is cyclic


Find the value of: $\lim_{n \to \infty}\left(\frac{1}{n+1}+\cdots+\frac{1}{2n}\right)$

The limit of truncated sums of harmonic series, $\lim\limits_{k\to\infty}\sum_{n=k+1}^{2k}{\frac{1}{n}}$


In photographing the moon, it appears hazy, Why?

How can I achieve more clarity in my photos of the moon?


What should I write in the "National identity number" field of the Schengen visa application form?

What “National Identification Number” to enter in an ESTA application, for a German?


Why do starships 'fall' when they blow up?


Update app with firebase database android


How to escape ampersand in \acro command?


How can I play and stop an audio file in my iPhone application?


Static Templated Class Method unresolved

Why can templates only be implemented in the header file?


Why doesn't controlled impedance depend on track length?

How can PCB trace have 50 ohm impedance regardless of length and signal frequency?


How to get a single operator from the stmaryrd package?

Importing a Single Symbol From a Different Font


A parabola with focus $(-1,-1)$ is tangent to $y=3x-8$ at $(7,13)$. Find the latus rectum.


How do I prevent apt-get from upgrading packages built from source with apt pinning?

How to prevent updating of a specific package?


Can someone become immune to the Death Note by using plastic surgery?

Can an adult be killed using the Death Note, by remembering their childhood face while writing the name?


How to sort an array of objects with jquery or javascript


If two functions are defined by the same formula, but have different codomains, are they equal?


Ubuntu GUI crash when LightDM enters, unable to login

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


How to change a marker color based on a rule in Qgis

Assign multiple colors to features within a single vector layer


Name of next tag badge and progress for it are jammed together if name is too long

The Next tag badge block overlaps other block on user's Profile Activity page


Java Maven ClassNotFoundException in command line

How can I create an executable JAR with dependencies using Maven?


Why does, when opening certain websites, text appears to load after all the graphics?

Why don't websites immediately display their text these days?


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


Unable to update apps due to (unknown) payment issue

Billing Information Required for App Updates


Add a complex image in the panel, with buttons around it in one customized user interface


How come a function in a var is not hoisted?

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


How to change font size for specific lstlisting


How to integrate $\int \frac{1}{\sin^4x + \cos^4 x} \,dx$?


Reference to a entry in bibliography without generating it

LaTeX/BibTex not arranging citations by order of appearance


Looping through JSON results with jQuery

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


How can I stamp a texture on top of a material?

Add a transparent image on top of a material


Can't Access Windows 10 Update Orchestrator Service

Stopping all automatic updates Windows 10


How to check in python that a file in a folder has changed?


The exchange of photons gives rise to the electromagnetic force

Deriving the Coulomb force equation from the idea of photon exchange?


issue when promoting a second server as domain on r2 2008

Issue when promoting a second server as domain on R2 2008


Is This An Example Of Recursion (Python)

How can I build a recursive function in python?


Can I measure a journey time < 100 years on a 100 light year voyage?

How long would it take me to travel to a distant star?


System directly booting to Windows without showing GRUB menu

System boots straight into Windows without showing GRUB


how to create a global app bar in windows 8 app?


Traffic jams driving on the D1 from Praha to Brno

How busy is the E50/D1 motorway in Czech Republic?


How do I FORCE restart a iPhone 4s with a broken sleep/wake button AND notification area stuck midway!

How to force restart an iPhone with broken home button


How to calculate distance of an object from camera or size of an object in an image? Have to utilise already generated camera parameters to find these

How do I calculate the distance of an object in a photo?


I can find time complexity for 'for' loop but when the condition is changed I get stuck. Is there any mathematical way to calculate time complexity?

Big O, how do you calculate/approximate it?


Substitute multiple whitespace with single whitespace in Python

Is there a simple way to remove multiple spaces in a string?


Clipping MrSID raster image, without decompressing clipped raster, in ArcGIS Desktop?


Probability of getting heads on an even numbered flip

Probability of getting first head on even coin flip


Can I use the names or logos of real football teams in my game?

Legal issues around using real players names and team emblems in an open source game


Syntax error: Invalid statement python-pygame

Python print statement “Syntax Error: invalid syntax”


How can I install downloaded 'netbeans' in Ubuntu 12.04?


CSS: Centered, fluid left, fixed right, source ordered layout with min/max width

2 column div layout: right column with fixed width, left fluid


Guess I have still not got the hang of it?


Center absolute div inside relative parent with dynamic width


Back up not only games, but also game progress before flashing ROMS

New phone: How to transfer game progress?


Proof Assistance: Pinter Chapter 10 Exercise G5

Order of an element in a finite cyclic group


Do Windows Vista programs work on Ubuntu?

How can I install Windows software or games?


How to download a driver on Windows, install on Ubuntu?

How can I install software or packages without Internet (offline)?


Saving .txt with JFileChooser and business class

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


error with java.lang.NullPointerException when trying to create table programically


Simple regular expression not matching number in Python3

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


Simulating group_concat MySQL function in Microsoft SQL Server 2005?


Add a way to highlight/emphasize changes in code


How to create a rounded beamer block with the title starting a bit forward than the left margin?


VisualForce - If(CONTAINS) assistance in user form

Rendering PageBlockSections based on picklist


Whether 127.0.0.1 traffic hits the physical network or not


Create new file with spaces from argument BASH

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


simple paranoid question about sudo and passwd

What happens if you do sudo passwd without specifying a user?


ASP.NET web application I Can’t Access after IIS hosting


How to calculate Beta and coefficient of determination ($R^2$) from unstandardized coefficients in OLS regression?

Converting standardized betas back to original variables


Kullback-Leibler divergence with sample data likelihood

Intuition on the Kullback-Leibler (KL) Divergence


Generate "using" directive from fully-qualified class name without having to go to the top of the code file in Visual Studio 2017

Visual Studio keyboard shortcut to automatically add the needed 'using' statement


Declare variable to hold job name and if job running kill it


Plot that draws a dashed/solid curve depending on the y-value of the curve


Anything similar in javascript to ruby's #{value} (string interpolation)

How can I do string interpolation in JavaScript?


Can't create fields of type Time on shapefile layers

Storing datetime values in Shapefiles using QGIS?


Moderator messages not showing on Pets site

Per-site Meta post didn't populate Moderator Inbox


Is it dangerous to keep my phone plugged in indefinitely?

Does constant charging harm my Android cellphone?


How come I'm getting a null pointer exception

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


Dominoes and induction, or how does induction work?


Ruby - dynamically add property to class (at runtime)

adding attributes to a Ruby object dynamically


CRS not lining up with base maps from OSM plugin in QGIS

Misplaced Google Maps with OpenLayers plugin in QGIS?


Vue/JS: why does editor throw error if constant defined within if/else and returned outside?

What is the scope of variables in JavaScript?


Prove or disprove that the ring $\mathbb{Z}[x]/(x^2-1)$ is an integral domain


How to solve double limit $\lim_{m\to\infty}[\lim_{n\to\infty}(\cos(m!\cdot \pi\cdot x))^{2n}]$

Double limit of $\cos^{2n}(m! \pi x)$ at rationals and irrationals


Why is the Gamma function $\Gamma$ used for interpolating factorials? Is it wrong to say that $(4.3)! = \Gamma(3.3)$?

Why is Euler's Gamma function the "best" extension of the factorial function to the reals?


Number of views for Booster and Publicist

View progress towards Announcer, Booster, and Publicist badges


Can "meet her" be pronounced [miːdər] in American English?

Are "traitor" and "trader" pronounced the same?


Classicthesis, remove [date, time - version #]

Date on the bottom of the page without drafting option in ClassicThesis


Why appears .log.fls etc when using TeX in the Atom editor?


Thread-safety of bool flag crossing an async boundary


What is the process that leads to the volume expansion of the outer layers of a star when it becomes a red giant?

What causes the dimensions of a star increase when its hydrogen fuel is exhausted?


How to expand array content from its name?

Indirect return of all elements in an array


Application to transfer music, photos, data to android phone?

How to transfer files from/to an Android device with ADB via GUI?


'==' does not work while checking string values, but '.equals()'does. Can anyone tell me why?


unable to install .deb file through terminal


Spreading out text vertically inside a parbox or minipage automatically

Use of optional argument stretch in \parbox


Lg G4 email verification bypass cant do anything

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


How can I add a visible column line in notepad++ so that it will let me know if I wrote a line which has more than x characters

Vertical line for the the right margin in Notepad++


can I make apacite citation always use et al. for more than two authors?


Multiple axis and filling between curves

fillbetween from pgfplots does not work inside groupplots


Is the wave-particle duality a real duality?


Using python to open cmd and automatically enter a password


bash - get 1st argument of current command I am editing via history, or similar?

How to repeat currently typed in parameter on bash console?


How do I start my own taint infestation in Minecraft?

How do I spread taint to a certain area in Thaumcraft?


Can a class derive from more than one abstract class?


How to install D-link DWA-131 B1 on Ubuntu 14.04?


Separating two huge images into two pages


Difference between Lineage OS and Cyanogenmod : how does it affect current users?

So what does Cyanogen Inc shutting down mean for CyanogenMod and similar ROMs?


Set the max width of the image and does not stretch if smaller


Assign random team out of 16 teams to a random person out of 8 people

How to randomly select an item from a list?


try/catch with InputMismatchException creates infinite loop


When a ranged attack deals multiple damage types, can I choose what damage type my Sharpshooter bonus gives?

Can I choose which damage type my Sneak Attack does if my weapon does multiple types?


Using PyQGIS to transform layer of polygons into layer of holes inside bbox?


Clear pattern in the residual vs fitted values plot

Apparent correlation between standardized residuals and predicted in regression


Why do parasites sometimes kill their hosts?


32536 bus error ./program, due to my use recv?


What Kept Gollum Alive After Losing the Ring?

Why didn't Gollum grow old and die after he lost the One Ring to Bilbo?


get strings between 2 delimiter in python

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


How to connect php variable into javascript for loop

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


What would I use a MATCH SIMPLE foreign key for?

Differences between MATCH FULL, MATCH SIMPLE, and MATCH PARTIAL?


create latex symbol from vector graphics


Different "Preferred Networks" for different Network "Location"

Can't I use different Wi-Fi networks for different Locations?


Single word to denote "immunity from scrutiny"

Idiom for a person who is above any question


Declare variable within Javascript functions

How do I return the response from an asynchronous call?


How can you test what color different people perceive?

What really is color and how do we perceive it?


How to validate an email address in JavaScript


How can i remove none alphabet chars from a string[]?

How do I remove all non alphanumeric characters from a string except dash?


Enter academia with no undergraduate degree (only professional experience)

How can I transition from industry to academia without having a college degree?


shellscript is having trouble finding a file

Why do we use "./" (dot slash) to execute a file in Linux/UNIX?


Show some sort of popup if a user uses code in their post and does not format it correctly

Give a warning instead of silently deleting


How do i convert this string into an array?

Safely turning a JSON string into an object


Java: Avoid inserting duplicate in arraylist


How to get host server CPU info from SSMS

How can I tell how many Cores SQL Server is actually using?


Block networks from appearing in the 'Hot Network Questions' list

Filter "Hot Network Questions" by excluding sites


What's the difference between "dir" and "ls"?


How To Change OS From Windows 7 to Ubuntu 16.04 (Xenial)


Is economics worthy of a Stack Exchange site?

Is there any Stack Exchange site for economics questions?


I can use more memory than how much I've allocated with malloc(), why?


Java - Issue with Comparing Strings for Sentinel Values


Showing $\prod_{n < \omega} n = 2^{\aleph_0}$

What is the product of all nonzero, finite cardinals?


How do I find the longitude of the subsolar point?

Is there a simple yet accurate formula for where on Earth the Sun and Moon are directly overhead?


What is the SCIFI book about some species of moon beings and their interactions and it could be allegorical to modern race and ethnic relations?

Short story or novel from the 1970s or before about two warring alien tribes


Book on structural equation modelling/ confirmatory factor analysis


How can I fix screen tearing in google chrome?

Chrome/ium rendering problems with Intel Graphics


Landscape topography from grayscale image


How can I remove the `qbqjralptr..vbs` worm?

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


Prove/Disprove $\sum a_n$ and $\sum b_n$ converge together iff $\underset{n\to \infty }{\mathop{\lim }}\,{{a}_{n}/b_n } = 1$

True/False: $\mathop {\lim }\limits_{n \to \infty } {{{a_n}} \over {{b_n}}} = 1$ implies $\sum {{a_n},\sum {{b_n}} } $ converge or diverge together.


Python script running fine only 120 times. Any Ideas


Can a Bard use Glyph of Warding even though they do not "prepare" spells?

Can a Bard use the Spell Glyph option of the Glyph of Warding spell and cast a known spell into the glyph?


Caption titles in List of tables and List of figures overlapping subsection number


How can I simplify expressions with custom-symmetric tensors?

Recognizing special cases of a defined function for permuted arguments


Why does jQuery or a DOM method such as getElementById not find the element?


/usr/bin/env python runs on cmdline, fails in #! line


Rails 3: How to "redirect_to" in Ajax call?


Replacing a 1963 GE 125 Amp, 240V service panel

What options do I have to replace a failed service panel?


How to select the nth row in a SQL database table?


Shakespeare chose Hoist, why not be more grammatically correct with foist?

Why "hoist" in "Hoist with one's own petard"?


International transit through Istanbul, and passport validity

Do I need a Turkey transit visa for a layover?


Can't Install or FInd AMD Graphic Driver. (Ubuntu 17.10, Intel i3 6006u, AMD Radeon M330)

Ubuntu 14.04.5/16.04 and newer on AMD graphics


Are more mobile app review or moderation features coming?

How can I report bugs with or request features for the Stack Exchange mobile apps?


Screen locks automatically after certain amount of time

How to configure idle period for auto locking screen


Flat quads (or, why is my mesh so funky?)


Query not going through due to PDO prepare converting my int into string (I think)

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


How to use regex to replace a sentence that has a question mark


What does a double colon do inside a module?


How can lab equipment be transfered when the PI changes universities?

What happens to equipment purchased using a startup package after an academic leaves the university?


Is this formula for the $n^{th}$ prime number useful?


At what age should parents stop showering/bathing with children?

When should parents stop changing clothes in front of children?


Bash for windows 10 not opening a program

npm commands not working on WSL with zsh


Solution of square root of the square of (-1)


How to take effect `usermod` command without logout and login

How to allow to run su instantly after I added the user to the appropriate group


The articles. A sentence about introduction of something

Are there any simple rules for choosing the definite vs. indefinite (vs. none) article?


Single server for multiple web-apps (same domain)

How to handle relative urls correctly with a nginx reverse proxy


i have question i got error like this [[Ljava.lang.Integer;@26f0a63f]

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


What is the reason for the exponential speed-up of quantum computers?

What exactly makes quantum computers faster than classical computers?


undefined reference to operator<< overload

Why can templates only be implemented in the header file?


Heisenberg's uncertainty principle derivation in a ring

How can I solve this quantum mechanical "paradox"?


Strange result when removing item from a list while iterating over it

How to remove items from a list while iterating?


Blender is saving as a blend1 file, not blend


Using UNC pathname with Calculate Field tool in ArcPy?

Using Calculate Field to fix hyperlinks in ArcPy gives Cannot use VB for services?


Does the Ancestral Guardian barbarian's Ancestral Protectors feature grant resistance against spells such as fireball and toll the dead?


How can Lazy provide thread safe lazy loading when it's .value property does not lock?

Is accessing a variable in C# an atomic operation?


Equation of a Line of Intersection of Two planes

Equation for the line of intersection between two planes


does there exist example of this paticular type of function?

No continuous function switches $\mathbb{Q}$ and the irrationals


Material preview not working, just shows glitch moveable look texture

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


Having issues trying to center an image using tailwinds containers - invisible padding to the right of the image


.DS_Store Removal permanent way of stopping it's creation on Mojave

Is there a way to prevent those pesky .DS_Store files from being ever created?


resume: Present Perfect or Past Perfect?

"I have been 'verb-ing'" vs. "I had been 'verb-ing'"


Aliens plan to invade Earth but hero, scientist, and girl friend stop them


How to return a result from a SQLite SELECT?


Simple proof of oscillation/nodal theorem in quantum mechanics

When does the $n$th bound state of a 1D quantum potential have $n$ maxima/minima?


Is 110 degrees fahrenheit on average bad on a 2019 MacBook Air? (And other problems)

CPU Die temperatures reaches 90° C, is that normal?


What is the difference between closure function and normal function in javascript?


Nexus 7 tablet not displaying on "Android Device Chooser" in eclipse

Android device chooser - My device seems offline


First post audit test using the answer of a 4 year old user with over 150k reputation

First Post suggests an answer from a "new user" who is 3+ years old with 1800 rep


Does Improved Divine Smite work in an Antimagic Field?


Character with byte sequence 0xe2 0x80 0xa6 in encoding utf8 has no equivalent in encoding latin1


Why was Kylo Ren unable to stop the bowcaster shot from Chewbacca?

How Does Kylo Ren not stop Chewbacca's blaster?


Is the non-open port response [RST, ACK] normal?

Why are some ports reported by nmap filtered and not the others?


Is it possible/sensible to add a suspension fork to an old mountain bike?


pgfgantt errors when compiling in overleaf

\ganttvrule from pgfgantt not working in Overleaf?


Windows.old folder reappears everytime in windows 10 consuming even more space.

How to force the deletion of a locked file that has no locking handle on Windows?


Which object does `this` refer to inside an event handler?


How can I automatically download lyrics in iTunes?


trying to install Node js, but it seems like in the source files or package there in an extra space so error are there

How to install the latest versions of NodeJS and NPM?


How to insert a edit command button for output field?


Should it be 'an' or 'a' in front of an abbreviation?


How can I install a tar.gz package in the terminal?

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


Generating a random number with specified bit length?

How do I generate random integers within a specific range in Java?


Why does setTimeout in a while loop increment in order?


Google shows old domain and wrong meta-description

What are the best ways to improve a site's position in Google?


How to prove connecting 3 dots to three squares without overlap is impossible?


How to validate an email address in JavaScript


Using regex for email input validation C++

How to validate an email address using a regular expression?


How do I convert a MTL file to a OBJ file?


How to append a smaller list of object in another main list in javaScript

Union of Array of Objects in JavaScript?


Can rotating disk clocked at its center at the speed of light have an outer edge that travels faster than the speed of light?

Rotate a long bar in space and get close to (or even beyond) the speed of light $c$


Mac M1 won't boot from USB - option key does nothing

How to install Ubuntu on a Mac with M1 processor?


What is the name of the perspective style of games like Final Fantasy 6, Chrono Trigger or Alundra?


Changed DOM element tag, script no longer works

Event binding on dynamically created elements?


Will overstaying a Schengen visa be entered in SIS II?

What are the consequences of a US citizen overstaying a Schengen visa?


Please help I have this and I didn't get it well

What does $\lim_{x\to4} \frac{1}{x-4}$ equal?


First error: You have uncommitted work pending. Please commit or rollback before calling out

System.CalloutException: You have uncommitted work pending


2.9x Why can't I see my scripted print function results in the console?


Show that $I^{(n)}$ is a primary ideal belonging to $P$

Symbolic power of a prime ideal is primary


How do I recreate this color overlay layer effect in Photoshop?


Is there a preferred frame size calculator?


How is it possible to override a property with a new type?

C# - Keyword usage virtual+override vs. new


Is there a GraphicsPrimitiveQ (or a complete list of Heads of graphics primitives)?


Global variable in main with concatenation?

How do I concatenate const/literal strings in C?


How to downgrade php version in ubuntu 15.04


What is the procedure for taking down Titans?


Zombies - Why do they need to feed on living animals/humans?


Allow linking to specific revision of revision history showing diff


Way to automatically replace original file with output?

How can I make iconv replace the input file with the converted output?


Nginx throttle download speed based on filesize


Does it seem odd to say "I'm in love WITH you?"


Should I refrain from posting the same question on different websites?

Is cross-posting a question on multiple Stack Exchange sites permitted if the question is on-topic for each site?


Prove $(n!) ^2 > n^n$ for all $n > 3$ using Induction


graph from a text file containing range of values


Why don't gksu/gksudo or launching a graphical application with sudo work with Wayland?


What does "Package  has no installation candidate" mean?


Biblatex only reverses first author's name

Citing two authors gets displayed incorrectly


How to specify a temporary folder with more disk space via terminal?


Does this quote in Deathly Hallows imply that Dumbledore had used the Killing Curse before?

What exactly happened to Ariana when Dumbledore and Grindelwald fought?


How to use manual partitioning during installation?


Android: Want to set custom fonts for whole application not runtime


How confident is my model? Is there a way to know?


Mac OS X: how to open vim in terminal when double click on a file


Not able to access protected method from other package

What is the difference between public, protected, package-private and private in Java?


Proof that if $\mathrm{tr}\,A^k=0$ for all $k=1,\ldots, n$, then $A^n = 0$

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


Does a particle annihilate only with its antiparticle? If yes, why?


How to edit my bibliography (Reference) style so no "In" appear before name of journal,


Prove in a combinatorial way (for example using an argument with committees) for the Identity

Give a combinatorial proof to show the following for all integers $n \geq 2$.


is this derailleur short cage or long cage?


Question mark or bold citation key instead of citation number


How did the guy in the 1st episode of Westworld not get hurt when he was shot?

Have guns in Westworld started operating differently?


Prove that if A is a square matrix with linearly indep columns, then $A^+$ = $A^{-1}$

If $A$ is a non-square matrix with orthonormal columns, what is $A^+$?


If $X$ is not Hausdorff, then does $X$ have a compact subset that is not closed?

If every compact set is closed, then is the space Hausdorff?


Can you help me with my software licensing issue?


Declaring self-referencing pointers in Swift

Adding observer for KVO without pointers using Swift


Should I include details about extracurricular art projects on a grad program application?

Should seemingly arbitrary things like "play piano for Church" or "intramural badminton" go on M.S. or PhD applications in sciences/engineering?


ArrayList returns last item for all entries

Why does my ArrayList contain N copies of the last item added to the list?


Compute $\phi^{-1}(k)$, $\phi$ Euler's totient function?

How to solve the equation $\phi(n) = k$?


What's the proper way to punctuate inches when recording the dimensions of something?


Using Dynamic to import the chronologically newest file in a directory


Are all the youtube animations of EM waves wrong?

Popular depictions of electromagnetic wave: is there an error?


PlayOnLinux error in 32bit OpenGL on Ubuntu 16.04. with cuda-8.0

playonlinux is unable to find 32bits / 64bits OpenGL library


Why is this causing a segmentation fault?


Why geometry package cause margin overflow with Babel finnish?

Why doesn't LaTeX hyphenate words containing accents, e.g. "développement"?


How do I put text over a squiggly arrow?


C: pointer to struct in the struct definition


When I run the app, the build is successful but the app is crashing. Please help me with that. Below is the error I'm receiving in the run tab

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


How busy is the Roman Colosseum throughout the year?


How long can I run a portable washing machine which requires 220V and 300W from a 12V, 120AH, 800A auxiliary battery?

How long will a battery last based on these numbers


How to do custom bokeh on Nikon D3200 with 18-55mm lens (f3.5)?

Can I make custom bokeh shape using a 18-55mm Nikkor lens?


List of lists changes reflected across sublists unexpectedly


Can a two-sided lightsaber have two different colored blades?

Is it possible to construct a multi-colored double-bladed lightsaber?


Scope and wording of "minimal understanding of the problem" close category


Ring Inside an Algebraic Field Extension

Intermediate ring between a field and an algebraic extension.


Area of intersection between two circles


Find $f(x)$ such that $f(f(x)) = x^2 - 2$


Can't recover the Gmail username to access my Android phone

How do I recover my Google account (or Gmail) password or username?


Why does the current directory not change after executing script?

Why doesn't "cd" work in a shell script?


A query regarding constant $\frac{1}{4\pi \epsilon_{0}}$ in Coulomb's Law

Physical dimensions for the Coulomb force in SI and CGS


get number files and folders under a given folder

How to use wc and piping to find how many files and directories are in a certain directory?


How can I get a exFAT drive to (auto) mount?

How do I install and mount an exFAT partition?


What is the effect of marking as duplicate?

Stop generating "possible duplicate" comments


Android : Thread OnFinish() --> Call another function

How to know if other threads have finished?


Are we really moving at the speed of light in the time dimension?

Why are objects at rest in motion through spacetime at the speed of light?


Splitting multiple multi-line cells into new rows

Google sheets split multi-line cell into new rows (+ duplicate surrounding row entries)


How can I setup a Material in Cycles for Z-Transparency?


We know that the protons in a nucleus are positively charged. So why does the nucleus stay intact?


how $2x=x$ , related to differential calculus

Where is the flaw in this "proof" that 1=2? (Derivative of repeated addition)


Exception while retrieving all available Site-Columns Sharepoint Client Model

Requested value 'CheckBoxes' was not found


How to eliminate group of observations under conditions

How to select rows according to column value conditions


Deal with negative predicted values in a linear model

Getting negative predicted values after linear regression


Formula for sum of all binomial coefficients $\binom{n}{k}$ where $k$ is divisible by 4

Sum of binomial coefficients with index divisible by 4


Annoying display truncation of numerical results


Convert from MySQL datetime to another format with PHP


Finding and using a single (best) decision tree from random forest to evalute a sample

Making a single decision tree from a random forest


Writing equals() and hashcode() method in the real application

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


increasing numbers $x_n\to\infty$ such that $\sum_{n=1}^\infty(1-x_n/x_{n+1})<\infty$


Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result


Button text for 'Are you sure you want to cancel this order' alert?

Should "Yes, delete it" be red, or green?


What does  signify when using Vim LatexSuite?


In what order should you do linear regression diagnostics?


Show a stretch of numbers are composite/ not prime

What is the maximum number of consecutive composite numbers possible?


What are SPF records, and how do I configure them?


Any alternative in C# similar to Java's nextInt() to extract int from string, without using Split()?

Is there an equivalent to the Scanner class in C# for strings?


reference object with key containing brackets


Pinged Person in a Comment Deleted within Seconds: How does notification work?

If I leave a comment, then delete it, does a person still get notified?


Do I need a Turkey transit visa for a layover?


How to change the login procedure on Ubuntu14.04

How do I get and modify the source code of packages installed through apt-get?


Total Score of TopTags in AndroidApp does not match

Tag score calculation wrong in Android App


After installing Ubuntu 13.10 I get this message "the disk drive for /dev/mapper/cryptswap1 is not ready yet or not present"

What to do about "the disk drive for /dev/mapper/cryptswap1 is not ready yet or not present"?


My linux has changed into command mode. How to change it back to GUI mode?

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


Why didn't Hagrid go in the first place?

Why were Harry's Hogwarts Acceptance Letters Not Sent Directly To Him?


Remove tikz blank space at end of arrow edges


How to break/exit from a each() function in JQuery?


How to get this in decimal value instead of null in this case


Differential of the inversion of Lie group

Pushforward of inverse map at the identity?


Does lcm of multiple numbers also divide any common multiple of these numbers?

Beginner: How to complete the induction case in a proof that all multiples are a product of the least common multiple


Why is this div margin-top not working as expected?

Why does this CSS margin-top style not work?


Not able to write the message into excel file in console showing java.lang.NullPointerException

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


how to disable Application Menu in top bar in 20.04?

Gnome Tweak Tool is no longer allowing to move the Gnome Application Menu out of the Top Bar on Ubuntu 20.04


Where to find complex test scripts using Selenium/WebDriver?

How to find real world Selenium projects


Write a function to parse data from XML file

SimpleXML: Selecting Elements Which Have A Certain Attribute Value


Something wrong with spaces in zenity trying in a script

Quoting / escaping / expansion issue in "command in a variable"


Can I have accounts on different SE sites that are not linked?

Is it possible to separate professional Stack Exchange accounts from personal ones?


Chrome extensions concatenate async calls

Chrome Extension Message passing: response not sent


Is it possible to left-align the Beamer "Berlin" theme heading?

Reduce horizontal width of miniframe in beamer


Wi-Fi not working on Lenovo ThinkPad E570 (Realtek RTL8821CE)


How to create a desktop shortcut in Unity?


Solve $y^3=x^{3}+8x^{2}-6x+8$ for positive integers $x, y $


impossible installation : "packages have unmet dependencies" and "broken packages"

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


Removing White spaces from string is not working in c#

How do I replace multiple spaces with a single space in C#?


Dictionary for TeXstudio: “No dictionary Available”


data.table group by with a filter condition


Proper/elegant way of implementing C++ exception chaining?


A question about magnets, energy, and forces

From where do the permanent magnets get energy from?


A Way to Create Blender Materials in Text or Script? (Included: Script to Retexture SFM Models in Blender!)

Control Cycles/Eevee material nodes and material properties using python?


Which badminton speak is better in US `ba~d~min` or `ba~men~ton`

Does `That's very sweet of you` in the US sound like `That's very sweef you`?


How to get time in milliseconds in Android Shell?

How to measure time from adb shell with milliseconds resolution?


When did "two and thirty" construction fall out of common usage?

19th century English texts occasionally use Germanic-style number words, such as "four-and-twenty". When did this fall out of use?


javascript executing function after full image load

How to create a JavaScript callback for knowing when an image is loaded?


Initializing 2d list in Python provides links between values (same address)

List of lists changes reflected across sublists unexpectedly


CSS required to make lightning:checkboxGroup items display horizontally


Timeline vote summary shows votes for the 24 hours following the timestamp, which is confusing


Adjectives after nouns in descriptions of persons or animals

“Will we be able to talk?” I asked, my eyes red and swollen from crying, a balled up tissue squeezed tightly between my sweaty palms


Bug when clicking through closing options


Seeking German Naval records for Reinhard Flohr

Finding information on German soldiers from World War I and World War II?


Find Without primary key Table in SQL Server 2008 R2?

How do I find all tables in a DB that have no explicit primary key?


Please help me to identify this song so that I can find similar songs

What is the genre of the song used in this Chinese lightshow video


Is it possible to recursively instance object particles?


Prove that $\frac{\binom{p}{k}}{p}$ is integral for $k\in \{1,..,p-1\}$ with $p$ a prime number with a particular method

Proof: if $p$ is prime, and $0<k<p$ then $p$ divides $\binom pk$


How To Make A Board Game Piece With Vector Displacement


Domain Name has hyphens and exact match, should I change it?

Is it better to put hyphens in a domain name?


How can I assign the json response from query.ajax to a variable?

How do I return the response from an asynchronous call?


Recursive Alegbraic Equation for binary trees?

Possible distinct binary tree structures at depth d


transforming numbers from words to digits

Is there a way to convert number words to Integers?


use cols/rows or style-width/height to specify dimensions of textarea?

Should I size a textarea with CSS width / height or HTML cols / rows attributes?


maximum value of $6$ variable expression.

If $a,b,c,d,e,f$ are non negative real numbers such that $a+b+c+d+e+f=1$, then find maximum value of $ab+bc+cd+de+ef$


How to insert a symbol like θ, α, Γ, Δ or anything in the MySQL database using php?


Proof that $n!\leq {(\frac{n+1}{2})}^{n}$

How can I show that $n! \leqslant \left(\frac{n+1}{2}\right)^n$?


Microsoft Outlook hiding text after pressing enter

How do I fix Outlook only showing the first line of every message?


how to update fields of a nested object in mongodb?

How to Update Multiple Array Elements in mongodb


Overlying images while tracking motion and adjusting angles

Is it possible to take a mask clip and 'connect' it to a specific point on a moving object?


How are parameters evaluated for a Plot in Manipulate


How to fix external hard disk NTFS READ ONLY?


Worker threads issue: How to read this crash dump, and what to do about it?


Disallow command usage for a specific user

Can I allow a standard user to execute only certain sets of command in terminal?


We added thousands of pages at once to our website, and we have lost our SEO ranking, what should I do?

What are the best ways to improve a site's position in Google?


How do I add CSS (transition) to an item from a SVG file?

CSS Transitions and transforms on SVG elements


What happens when you enter an incorrect password in an os?

passwd pauses after bad password has been entered


Why is a projective module called "projective"?

Origin of the terminology projective module


Why does Ask Ubuntu have a special Top Bar?

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


What is the time format string for this date: Sat, 26 Jul 2014 11:55:55 GMT


How may I eliminate a gap appearing in a surface drawn with ParametricPlot3D?

Why does Plot3D omit parts of the surface at kinks?


Share a variable between workers with Python multiprocessing

Python multiprocessing and a shared counter


rand() function in c++ generate even and odd number with a periodic of 3276800 ,who know why?

How to generate different random numbers in a loop in C++?


Does well-ordering of the proper class of cardinal numbers imply choice?


Function with same name but different signature in derived class


C++ template class and operator overloading

What are the basic rules and idioms for operator overloading?


Can you help me with my capacity planning?


Ubuntu files on different drives and disk space requirements?

How to use manual partitioning during installation?


character "5" repeated in text fields, and system freezes


Why can not upgrade texlive2016 to texlive2017 on windows


Is there a "canonical" probabilistic version of the step function?

Why sigmoid function instead of anything else?


Apex batch class :System.CalloutException: You have uncommitted work pending. Please commit or rollback before calling out

Getting System.CalloutException: You have uncommitted work pending


automate saving screenshot (already in clipboard) to a file in bash

What's the quickest way to get a graphic on the clipboard saved to disk?


how $\pi$ is irrational if it is a ratio

Why is $\pi$ irrational if it is represented as $C/D$?


Agreement after disjunctive compound subject_"My brother or one of my sisters" — singular or plural?


Pop-up window for a related layer doesn't show the right values in ArcGIS online

ArcGIS Online related table not displaying correctly in popup


Unable to mount NTFS partition (no hibernation)

Unable to mount Windows (NTFS) filesystem due to hibernation


Missing ~/.Xauthority file in Ubuntu 17.10

Why don't gksu/gksudo or launching a graphical application with sudo work with Wayland?


What are the balance implications of allowing players to use their action to make a bonus action?

What overpowered combinations would be available if I allow a bonus action to be used in place of a standard action?


Should I pay off my student loans or keep it in the bank?

Why might it be advisable to keep student debt vs. paying it off quickly?


How do I install MS Office 2016 on PlayOnLinux


Is this an unnecessary "that"?? I'm confused whether or not to add a "that" in specific sentences

Why is 'that' sometimes optional before dependent clauses?


Can I run Ubuntu/Kubuntu on a Blade server with no graphics card?

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


How can I find the PID for software where the name of the software is different from the executable?


Why does a stable orbit of $H$ atom contain an integer number of de Broglie wavelengths?

Why can't an energy level exist containing 0.9 electron wave wavelengths? Why must it be a whole number?


Difference of two positive definite matrices


Increasing RAM size on Ubuntu 16.04 running in VMware Workstation


How to detect destroyed blocks in Minecraft

How can I detect when a player breaks a mob spawner?


Do US Universities commonly offer admission without funding?

Should I mention about my governmental-funded PhD scholarship which I don't want to use


Vigenere ciphertext encrypted with another vigenere cipher


Why is the node editor showing different kinds of nodes?


Let people accept a 100% correct answer without delay

Allow me to accept an answer immediately


Inverse of a particular matrix: $A = D + aJ$, all entries of $J$ are equal to $1$

Inverse of a diagonal matrix plus a constant


What are some ways to graphically display non-normal distributions in Excel?


What is the smallest number of elements necessary to generate S(5)?

How do i prove how $S_5$ is generated by a two cycle and a five cycle?


Converting Base64 string to file and saving locally using vbscript


Why do we think Spin is angular momentum as opposed to some other quantity?

Spin, orbital angular momentum and total angular momentum


Preventing SQL injection with PDO or MySQLi

mysqli or PDO - what are the pros and cons?


Can Log4Net Delete Log Files Automatically?

Log4Net: set Max backup files on RollingFileAppender with rolling Date


TikZ: how to draw arrows from the y axis to a curve?


TclTk library issue while install Rcmdr package on MacBookPro

Error ".onLoad failed in loadNamespace() for 'tcltk'"


What is the sum this series involving sum of reciprocals of natural numbers?

A finite sum involving the binomial coefficients and the harmonic numbers


Extracing IP addresses as whole words with POSIX BRE/ERE regex

How do you extract IP addresses from files using a regex in a linux shell?


Where do the bipolar jets of black holes come from?


Attempting to get better code coverage on fairly simple trigger

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


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


How can one prove that $\lim_{n\to\infty}(1 +\frac k n)^n = e^k$?

Is it trivial to say $\mathop {\lim }\limits_{n \to \infty } {(1 + {k \over n})^n} = e^{k}$


What are typical use cases of git-reset's --merge and --keep flags?


How to start For-Loop from beginn if the If-Condition is True


poll() failed, context incorrect? - Example: bpy.ops.view3d.background_image_add()


How can I know the function which represented by the Ordinals sign specified in the EntryPoint


Why using RMSE as loss function in logistic regression takes non convex form but doesn't in linear regression?

Logistic regression cost surface not convex


How do I apply URL normalization rules in PHP?


Was there any international response to Voldemort, ever?

Why did international wizards not come to help against Voldemort?


how to make it to start up like this 'john@john:~/Desktop$ blah blah blah

How to start a terminal with certain text already input on the command-line?


How to force any program to run with no admin privileges in Windows 7?

Run a program without administrative privileges in Windows 7


Automatic forwarding of Google Apps mail


g++ undefined reference with a shared library

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


Is Java's default value for Boolean 'true'?


Trim subsections length in table of contents

LaTeX - Different section names in TOC from body


How do I iterate over the words of a string?


How can I take a picture of code like this

What's the best way to take a picture of an LCD or CRT screen?


LAPTOP battery draining faster without overheating issue

Tips to extend battery life for laptops and notebooks


Is there a way to save selection by faces


Internet access not working in Windows Subsystem for Linux


Can level 1 characters survive a fall of several miles?

How can 16th-level characters mitigate damage from a lethal (long) fall?


Is there something wrong with df output?

ext4: How to account for the filesystem space?


Finding length of array inside a function


get all unix timestamps in current month and last month

Get the beginning and ending unix timestamp for a given month and year in php


why Spring security getPrincipal is giving NullPointer

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


How do I transfer my Google Chrome profile to a new PC?


Unable to mount Windows (NTFS) filesystem due to hibernation


Left a 10 pound cryovac wrapped frozen ribeye in garage for 3 hours - is it safe to eat?

Is there a problem with defrosting meat on the counter?


How to get actual values of colour theme colours in beamer?


proof that the sum of digits of natural number are divisible by 3 iff the number is

Why $9$ & $11$ are special in divisibility tests using decimal digit sums? (casting out nines & elevens)


How to toggle scroll lock in an HP laptop without a scroll lock key

How to toggle Scroll Lock in Excel 2010 without a Scroll Lock key in the keyboard


Splitting point shapefile in ArcGIS Desktop?

Exporting feature class into multiple feature classes based on field values using ArcGIS Desktop?


After the upgrade to 17.10 I only get a black screen. How do I fix this?

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


How to handle 1M websocket connections (Nginx/HAProxy/Amazon/Google)

Can you help me with my capacity planning?


How do I install a .deb file via the command line?


How can I find my Teamviewer ID via SSH?


Is it a bad idea to keep laptop suspended most of the time?

Are there specific technical considerations that would make it detrimental to put your computer in sleep mode every time?


Identify novel where gamers enter RPG theme park environment to play game

Identify story about gaming in a future with augmented reality


Getting Basic Authentication to work with ColdFusion


How can I delete an answer of mine through the Android app?

Allow us to vote to delete from the Android app


White space above display:inline-block divs

My inline-block elements are not lining up properly


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


How do I reenable Quack Overflow if I disabled it?


Virtualbox kernel driver on 14.04 not installed


TV programme similar to "Harrison Bergeron"

Episode of TV show where nobody was allowed to be smart


Reading JSON file in Python and converting to PST zone

need to convert UTC (aws ec2) to PST in python


Add Button listener with delegate to stop updating method argument


Ubuntu boots up Kali after using Katoolin

How to stop Katoolin from crashing Ubuntu?


W: Target package multiple times Ubuntu 18.04

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


Is a comma required after the word "then" and "now"?


Recursive __iter__ method implementation with generators


value of $ \sum_{k=1}^{\infty} \frac{1}{k!}$

Why does the sum of the reciprocals of factorials converge to $e$?


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


Where is the appropriate place to ask a question about career development?


Prepend 0s to string (to specific length)

Formatting Numbers by padding with leading zeros in SQL Server


Pokemon keep running away and Pokestops don't drop anything when spinning. What is going on?


Where can I get a Canon 7D / 7D Mark II card slot cover replacement part?

Where can I get replacement parts for Canon cameras?


Why is my nsuserdefaults text not showing up instantly?

NSUserDefaults Lose Newly Saved Data if App Killed Within 10 Seconds


Prove "Any open subset of $\Bbb R$ is an at most countable union of pairwise disjoint open intervals”.

An open subset of $\mathbb{R}$ is an at-most-countable union of disjoint open intervals


Best practice for saving Persistent Settings in C#

How can I save application settings in a Windows Forms application?


A division program the enters numerator twice and doesn't enter the denominator


iOS Safari Repeatedly Opens "Virus Detected" Emails

My iPad has a popup saying I have a virus


Can gravity be shielded, like electromagnetism?


Most efficient way to randomly "sort" (Shuffle) a list of integers in C#


Invalid parameter number: number of bound variables does not match number of tokens using pdo

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


Problem about LFT carries one pair of concentric circles into another pair of concentric circles

Möbius transformations and concentric circles


Differences between doublequotes " ", singlequotes ' ' and backticks ` ` on commandline?


Proving that the set of limit points of a set is closed


When is a continuous harmonic function holomorphic?

Proving an integral formula containing the Poisson kernel


Why do living fossils like crocodiles remain so constant and not evolve?


Failed to build in android studio. Can't find why it's not working

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


openssl TLS key exchange on IPv4 works, but on IPv6 does not

Ubuntu SSH connection hangs when I run ifconfig with IPv6 enabled


Accepting an answer should automatically upvote it as well


I am not allowed to view Ubuntu Forums. Restricted from viewing any page on http://ubuntuforums.org


Android-How can I know if it is the first time the application launched?

Determine if Android app is being used for the first time


the meaning of 'waiting on Beyonce' part in this sentence


How do I expire a PHP session after 30 minutes?


How do you prevent mod_rewrite from decoding a string in the path?

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


How can I specify the arrowhead size in printers points?


DGS-1005A switch question - which site to go?

What questions belong on Super User vs Server Fault?


Consider the following figure. A man sits in a pan and tries to raise himself by pullingthe rope downwards

Why are there two tensions on my free body diagram?


How would one implement a 4-qubit CCCNOT gate (equivalent to controlled-Toffoli)?

How can I implement an n-bit Toffoli gate?


Reference — What does this symbol mean in PHP?


A problem involving complex numbers and polynomials to prove that $f(z) + f(−z) = 0$ for all $z ∈ C$.

A function such that $f:\mathbb C \to \mathbb C$ such that $f(z)f(iz)=z^2$ satisfies $f(z)+f(-z)=0$.(MADHAVA-2020)


I have bike tires that read 26 x 1.95. Does that mean I need a 26-inch tube?

Complete beginner's question: inner tube too big?


I want to install Ubuntu without losng data on other partitions

How to use manual partitioning during installation?


udev rules to identify a USB storage media?

Triggering an action when a specific volume is connected


running periodic task at server side for servlet JSP MVC website

How to run a background task in a servlet based web application?


How could someone calculate the coulomb barrier transparency in 3 dimensions

With what probability does nuclear fusion occur at energies far below the Coulomb barrier?


Rescuing a possibly corrupt PDF in Acrobat

How can I fix/repair a corrupted PDF file?


How to add shell script to launcher in Ubuntu 17.04?

How can I edit/create new launcher items in Unity by hand?


Enumerate with lowercase letters not starting at "a. "

How can I make an enumerate list start at something other than 1?


Does running away from pokemon while chaining stop the chain?


Allow extra details for standard flag types

When flagging a post or comment, provide a freeform text entry field for all reasons, not just "other"


Do $\sqrt{A}BA^*B\sqrt{A}$ and $ABA^*B$ have the same eigenvalues?

Do matrices $ AB $ and $ BA $ have the same minimal and characteristic polynomials?


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


Different Generics T in the same collection


"0 more votes are needed to undelete this post"

Negative number of votes needed to undelete an answer


how to remove this [Bash], everytime I open Terminal?


I want a divorce! What's the most painless way of obtaining one?


How to specifically send either a chat message to all players or only allies?


How can I install .exe files of Windows 7 or more in Ubuntu?


Natural transformation induced by adjoint functors.

Proving that the transformation obtained from an adjoint pair is natural


Converting float to double loses precision C#


How to separate out a long list of verbs that then merges in with long list of objects?

Including a comma at the end of a list before a dependent clause


Handle button click event inside table that loaded using ajax

Event binding on dynamically created elements?


Question name changes to "undefined" when canceling answer edit

Question titles showing up as "undefined"


Javascript scope issues within an anonymous function

Closure needed for binding event handlers within a loop?


PCA and proportion of variance explained


Trying to identify story of a girl who teleports through rings/portals

Looking for a Pre-1975, young adult, sci-fi, colored circle dimension crossing


How do I convert numeric month number to name of month using PHP


Is there any performance difference between #include  and #include "filename"?

What is the difference between #include  and #include "filename"?


Should we `enable` the Systemd User service `pulseaudio.service`?

Should we `enable` the User Systemd service `pulseaudio.service`?


Finding the "triangular root" of a number.


I stumble on an integral of which "Mathematica" gives the value

Help me evaluate $\int_0^1 \frac{\log(x+1)}{1+x^2} dx$


Do I need to manually install AMD GPU driver updates on Ubuntu 20.04?

Ubuntu 14.04.5/16.04 and newer on AMD graphics


Why is the equal volume sufficient to solve the puzzle without any calculations?

Is there a clever solution to Arnold's "merchant problem"?


Output to stdout and at the same time grep into a file


Why does find -mtime +1 only return files older than 2 days?


Python: How to decipher a Caesar Cipher by multipling each item in a list by all the items in another list?


C# System.NullReferenceException {"Object reference not set to an instance of an object."}

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


What is a good book for self learning in geometry and topology and physics?

Book covering differential geometry and topology for physics


Solve a differential equation and evaluate the solution at a particular value of independent variable


Postgres 10 - Query slows down with order by


Is the class rating of my MicroSD card relevant?


java.lang.NullPointerException when invoking onLoadFinished()

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


What are the differences between Ridge regression using R's glmnet and Python's scikit-learn?


Segmentation fault while taking string from user


Create Generic method constraining T to an Enum


Grid ColumnDefinition Width : difference between * and

What's the meaning of * (asterisk) in XAML ColumnDefinition?


How to explain degrees of freedom term to a layman?


Passing arguments to a function from a bound button

How to pass an argument to event handler in tkinter?


python exec unix command - What is the error?

Wildcard not working in subprocess call using shlex


Error "was not declared in this scope" in function

'foo' was not declared in this scope c++


Android decoder->decode returned false for Bitmap download


Can $s_n=1+x+x^2+x^4+x^8+\ldots+x^{2^n}$ be simplified?

What is the Riemann surface of $y=\sqrt{z+z^2+z^4+\cdots +z^{2^n}+\cdots}$?


MYSQL - Why does my foreign key accept any value?

Foreign key not working in MySQL: Why can I INSERT a value that's not in the foreign column?


Is there something like show create database in postgres?


I can't join any servers and it says the authentication servers are currently offline

Is there a list of error codes for Minecraft?


Showing that a function is continuous for $x$

Proof of continuity $f(x+y) = f(x) + f(y)$


What is the package name for "ls" command?

How do I find the package that provides a file?


How do I solve a problem with term $a^{n} + b^{n}$?


python - sort strings in list by skipping first 4 lines


How do I split template defintion and instantiation into hpp and ipp files

Why can templates only be implemented in the header file?


I have multiple Schengen visa from Italy, can I transit in Holland for 2 hours before going to Italy?

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


How to print a brochure on Photoshop CS6 without white borders?

Print Preview showing bottom gap when set to scale to fit. Why?


javax.faces.FacesException: java.lang.ClassCastException: java.lang.String cannot be cast to javax.faces.component.UIComponent


Explain sufficient statistic for Poisson distribution

If $Y_1, \ldots, Y_n$ are iid from $Pois(\lambda)$, how to show that the sample mean is a complete sufficient statistic?


Java String array changes within a helper method, but reverts within the main method. Why is this?

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


How to escape @ characters in Subversion managed file names?


Extraction of data from a simple XML file


Should one pronounce THE [in this case, THEE] when the following word begins with a vowel and THA when the following words begin with a consonant


Getting 404 when closing a deleted question


Plot intersection (elliptic curve) of two quadrics

Plotting implicitly-defined space curves


How to get the name of a variable in a string

How can you print a variable name in python?


Examine whether $\sum_{n=1}^\infty{\sin^2\left(\frac{1}{n}\right)}$ converges or not

convergence of $ \sum_{k=1}^\infty \sin^2(\frac 1 k)$


How to synchronize the database upon team work on Drupal 8 project?


iOS 7 UI help needed - move elements based on screen size

How to develop or migrate apps for iPhone 5 screen resolution?


How do I remove old kernel files from /boot and fix a potential error listed in ?

How do I remove old kernel versions to clean up the boot menu?


The formula for covariance in terms of joint cdf

Prove that $ \mathbb{E}[XY] - \mathbb{E}[X] \mathbb{E}[Y] = \int_{- \infty}^\infty \int_{- \infty}^\infty (F(x,y)-F_X(x) F_Y(y)) \,dx\,dy,$


Dereferencing 64 bit register after using lower half in add

Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?


$\chi_A(\lambda)=\lambda^n -Tr(A)\lambda^{n-1}+...+(-1)^ndet(A) \implies \chi_{A^{-1}}? $


Deriving buoyant force from first principles


How can I show that $\int_{0}^1\int_{0}^1 \frac{1}{1-xy}dxdy=\frac{\pi^2}{6}$ through substitution?

How to evaluate $\int_0^1\int_0^1 \frac{1}{1-xy} \, dy \, dx$ to prove $\sum_{n=1}^{\infty} \frac{1}{n^2}=\frac{\pi^2}{6}$.


Create quaternion based on where a unit is hit (shield effect as in Starcraft 2)


What is a function which differs when differentiated with respect to x and then with y to function differentiated with respect to y and then x?

When is partial differentiation commutitive


Can't set Alt+Shift as a keyboard shortcut on ubuntu 20.04


Pulley system: how can tensions be equal throughout a entire rope if the weights on opposite ends are different?

Tension in an Atwoods machine conceptual?


Quick way to see how many people helped across all SE sites

Is there a way to get "people reached" sum across entire network for a user?


Print constructors at package level in Java

Can you find all classes in a package using reflection?


It is about Gerunds and present participle

Pure verbal nouns/deverbal nouns vs. gerunds


Dropping Internet connection on Realtek Semiconductor Co., Ltd. RTL8821AE


Was something changed in rep calculation?


How to calculate $\lim_{n \to \infty } \left( {\sqrt[n]{{{3^n} + {4^n}}}} \right)$?

Convergence of $\sqrt[n]{x^n+y^n}$ (for $x, y > 0$)


Does combining a plot and a region with Show override the region's options?

Why does the order of arguments in Show influence the result?


What are the rules and limits of Accio spell?


I can't create a clear picture, why and when to use RESTful services?


Elegant operations on matrix rows and columns


How can I find all the subsets of a set, with exactly n elements?


java.sql.SQLException: Can not issue data manipulation statements with executeQuery()

Cannot issue data manipulation statements with executeQuery()


Fermat's Combinatorial Identity: How to prove combinatorially?

Prove $\sum\limits_{i=0}^n\binom{i+k-1}{k-1}=\binom{n+k}{k}$ (a.k.a. Hockey-Stick Identity)


HtmlAgilityPack Drops Paragraph End Tags


Why doesn't chmod work in my bash script? Error is something about the directory...?


Normals seem to be correct but dark spots still appear

Strange black shading. Cannot fully light mesh. (Cycles)


Google Forms - Responses Chronological Order

Auto-sort column Google Spreadsheet on incoming Google Form response


what changes when you install a package in linux

What does apt-get install do under the hood?


Does a photon instantaneously gain $c$ speed when emitted from an electron?


If $f$ is injective and $g$ is not injective, $g\circ f$ is not injective?

Show that if $g \circ f$ is injective, then so is $f$.


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


Should column labels for numbers be aligned right?


Good way to pull new lines from (non indexed/non sequential) huge file

How to import CSV file data into a PostgreSQL table?


Why do many equations need squared powers?

Why do most formulas in physics have integer and rational exponents?


What part of speech is "mountain" in the sentence "Avalanches are dangerous to mountain climbers."?


Is there a word or phrase for someone who is repeatedly told NOT to do something, does it anyway, and gets hostile when it's mentioned?

When someone accuses you of wrong doing after you had accused them of something what do you call that or them?


Java - Compare Strings that may contain numbers, without the number of digits interfering

Sort on a string that may contain a number


How to fix Shellshock vulnerability on Debian Squeeze?

Can not update Bash on Debian 6.0 (Squeeze)


In what countries does 911 work as an emergency number?

What is the emergency phone number in different countries?


Transact-SQL using variable for table name


Read the value of an attribute of a method


Run length control of 2 on a binary variable with python list

How to generate all permutations of a list?


Minecraft piston door is only shut when lever is on, but how do I turn it off with another lever?

Is it possible to create an iron door which responds to levers on both sides


"Submit is not a function" error in JavaScript


Ubuntu 18.04.3 LTS Permanently disable on screen keyboard

On-screen keyboard popping up whenever I touch screen


fisher.exact test not returning expected p-value

One-sided Fisher's exact test and its complement


Which partition should I install the bootloader on?


How can I change the user directory name in Windows 10?

In Windows 10 how can we change the name of this folder under C:\Users?


The evaluation of $\lim_{x\to0}\left(\frac{\tan x}{x}\right)^{1/x^2} = e^{1/3}$

How to Find $ \lim\limits_{x\to 0} \left(\frac {\tan x }{x} \right)^{\frac{1}{x^2}}$.


Count the number of occurrences between markers in a python list

find length of sequences of identical values in a numpy array (run length encoding)


Xcode console empty after attaching to process

Xcode attach to process doesn't display NSLog


JQuery/Javascript - Append not working for "a" tag

Event binding on dynamically created elements?


Making a string out of a string and an integer in Python

How can I concatenate str and int objects?


Any way to send a personal message to another user?


That icon to the top left of most windows

How can I customize the system menu of a Windows Form?


How to give Ubuntu 14.04 more disk space


An error with libGDX, window opens and closes immediately

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


Can a local variable's memory be accessed outside its scope?


How to select the ID that's before another ID


Defining bijective function $f:\mathbb{N}\times\mathbb N\to\mathbb N$

The cartesian product $\mathbb{N} \times \mathbb{N}$ is countable


Some apps won't run after upgrade to iOS 7.1, how to fix?

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


The view through my canon 100D viewfinder is blurry

How do I calibrate the diopter correction on my DSLR's viewfinder?


Difference between string.concat and the + operator in string concatenation

String concatenation: concat() vs "+" operator


Should users be penalized for rejected suggested edits?

Too many of your edits were rejected, try again in 7 days


What's $-\frac{1}{27}$ in the p-adic ring $\Bbb Z_2$?

Relating the base-p periodic expansion of a rational to its p-adic representation


Prove that (0,1) ⊆ R and (4,10) ⊆ R have the same cardinality

Prove that $(0,1) \subseteq\mathbb R$ and $(4,10) \subseteq\mathbb R$ have the same cardinality.


Add duplicate tab or remove duplicate test from Close Vote audits

Filtering to Duplicates makes Close-Votes Queue a Haven for Robo-Reviewers


Is there a better way to iterate over two lists, getting one element from each list for each iteration?

How to iterate through two lists in parallel?


By induction, show that for ∀n∈N, it is true that:


Are there rules how 'g' is pronounced as /j/ or /g/?

Should 'g' followed by 'e' and 'i' be pronounced with a soft or hard g?


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


Sorting multidimensional array (repeating numbers)

How to Sort Multi-dimensional Array by Value?


xcode 5.0.2 Code Signing Entitlements Issue

Xcode 5: Code signing entitlement errors


Is having done research a must when applying to a graduate program in CS?

How does the admissions process work for Ph.D. programs in the US, particularly for weak or borderline students?


What's the difference between may and can in the context?


pyqgis - Load a PostgreSQL/PostGIS layer from a SQL query


Is it okay for a PhD student to go on holidays in breaks?

Taking break/vacation during graduate studies/PhD


Does current 64-bit Unity 2020 still support 32-bit (x86) native DLLs?

Can I load a 32 bit DLL into a 64 bit process on Windows?


How can I fix the error "GUI framework cannot be initialized" with TeXnicCenter and MiKTeX?


Suggested edit by OP in the review queue?


what version works with Opteron 180 Asus A8N motherboad?


$f: [a, b] \mapsto [a,b]$, $f$ is monotonically increasing $\Rightarrow \exists~ x \in (a, b)$ such that $x = f(x)$

Fixed point of a Function (monotonically increasing)


Why heroes of Tolkien novels didn't use birds to reach Mordor or Erebor?

Why didn't Gandalf or Frodo Fly to Mount Doom?


Retrieving subset of log using regex.... how to approach?


Does the term "home" also mean "family"?


Does the Armor of Agathys spell still damage attackers if you have temp HP from another source, such as the Dark One's Blessing feature?

How does Armor of Agathys interact with getting temporary hit points?


Can't empty all my database in SQL Server

Why dropping all foreign keys from a script is not working?


biblatex: omit initials, display only lastname when citing single author

biblatex, authoryear style: In-text citations display first name initials for certain bibliography entries


Multiple Functions as Arguments in CoffeeScript

How to pass two anonymous functions as arguments in CoffeScript?


java.lang.NullPointerException while creating BinaryTree from preorder and inorder

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


What happens if only one runner reaches base on a double steal?

Does a run count if it's made after an unforced out?


Show that $\lim \limits_{|P|\rightarrow 0} \sum \limits^n_{i=1}f(\zeta_i)g(\eta_i)(t_i-t_{i-1})=\int^{b}_{a}f(x)g(x)dx$

Riemann and Darboux Integral of a product of two functions


Is there anyway to transport completed levels on my computer over to my phone?


Understanding the weights of a neural network


what the difference between using synchronized keyword and lock

What's the difference between Synchronized and Lock in my example?


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