Should I capitalize the word "that" in a title?

Since the version of the word "that" might matter to the correct answer, I'll provide the actual title in question:  Title:  Existing Solutions that Didn't Work  If someone could explain the why of the answer, I would be appreciative.  EDIT:  It has been suggested that this is a duplicate, and that may be, in a sense.  However, the after reading the suggested prior question, I'm no closer to my answer.  I think it may have to do with my use of the word "that."  Perhaps it is incorrect?  Using these definitions of the word "that:" I'm having trouble figuring out which definition of that matches my title.  Am I even using it correctly?  Perhaps I should use which instead:  Possible Title:  Existing Solutions which Didn't Work  If my original usage is incorrect, and I should use which, then the answer is simple since which is always a pronoun or adjective, and those are both capitalized in a title.  However, I'm having difficulty understanding which part of speech that is in my original title.


Does my tax bracket change per pay period?

I'm in tax bracket A.  My employer takes out the appropriate taxes reach pay for my tax bracket.  During a special pay period, my pay is much higher than normal. If my pay was ALWAYS what it is in this particular pay period, I would be in a higher tax bracket (B).  The amount of "extra" alone does not actually push me into B.  My employer takes taxes out during this period as if my pay during that period was what I got paid every pay period, resulting in a much higher chunk of my pay going to taxes than it should.  Is my employer correct to do so?  This is in the USA, just to be clear.


Allow diamond moderators to create tag synonyms on their meta sites from the synonyms page?

Over on , I have just tried to create a tag synonym of  for † since there seems to be some confusion as to which to use, and people end up adding both.  † Although looking at the tag synonyms of  here, I should probably have done it the other way around.  Instead of just creating the synonym as I expected, it showed me  (which obviously I couldn't vote on myself) as if I were not a moderator. I guess I should have noticed that the button said "Suggest" rather than "Create", but elsewhere on the site, diamond moderator 'suggestions' are rather more binding. *8')  It was then suggested that I needed to do this via the moderation tools, so I had a hunt around and managed to find the moderator tool for tag synonyms and approve my own synonym from there. I now see however that just clicking on the  link would have taken me there anyway.  It seems odd that we can't just create the tag synonym directly from the tag synonym page, and the suggestion mechanism breaks the expectation of moderator suggestions being immediately binding (like flags), so it would be nice if this behaviour could be made more consistent.   Incidentally, I fully expect this to be , and rightly so since it only saves one click, but at least this post will serve as a searchable answer for future diamond moderators who are confused about this. *8')


$\lim_{x \rightarrow \infty} f(x) \not = 0$ $\implies$ $\int_0^{\infty} f(x)dx$ diverges?

What can I use to prove the following:  If $f:[0, \infty[ \rightarrow \mathbb{R}$ integrable in all $[0,c]$, $c>0$ and  if (limit exists and) $$\lim_{x \rightarrow \infty} f(x) \not = 0$$ then  $$\int_0^{\infty} f(x)dx$$ diverges.  I understand the idea that the integral must diverge, since the terms of the sequence never go to zero (i.e. the integral or the sum continues accumulating to infinity).  However I'm lost as to what kind of notation to use to display this. I think I don't need Riemann sums in this.


How can I delete a folder with lots of subfolders fast?

I have a folder with 266778 subfolders. How can I delete it?  I have tried  cd ~/.local/share/Trash/ sudo rm -rf *   but it takes much time. After 1 minute 25 seconds real time and 0.072 seconds user time it only deleted 2500 folders. This way, it will take over two hours to delete this folder.  Is there a faster way to delete this folder? Why is there such a big difference between user time and real time?  real    1m25.474s user    0m0.072s sys     0m28.142s   I use Linux 2.6.32 (Ubuntu 10.04.4 LTS).


Monitor HTTPS traffic on an ios device or maybe remotely on the Internet

I want to monitor HTTPS network traffic on the Internet and not Intranet.  I would use a tool like Charles or Fiddler and setup a proxy but I could only host through Intranet. Plus, I have the issue of decrypting https traffic.  Ideally, I would like to monitor all http requests on the ios device, log to a file and then I can monitor the full data in that file.  Also, I am working Cordova/Xcode ObjectiveC code to create webviews, so the application I want to monitor is not a full browser like Safari.  I would be monitoring webrequests through that webview.  Is there a way to do this?  What applications in iTunes/Store are available to print out decrypted https requests.  ...


How to rename theorem (or lemma) in Beamer to another language?

I'm Malay user. I want to rename the theorem tag in Beamer. Does anyone know how to do it? When the document class is article or book, I can simply modify the preamble as follows:  \newtheorem{theorem}{Teorem} \newtheorem{lemma}[theorem]{Lema} \newtheorem{corollary}[theorem]{Korolari} \newenvironment{proof}[1][Bukti]{\noindent\textbf{#1.} }{\ \rule{0.5em}{0.5em}}   However, the above things does not work in Beamer. So, does anyone know how to do it?


I have 3 servers.  Call them A, B, and C.  B and C are remote and only have A in their hosts.allow.  What I need to do is log into A, and then rsync over SSH the files from B to C.  I want to use rsync because many of the files are similarly present on both B and C.  I could try to rsync from B -> A and then from A -> C except I don't have nearly enough disk space on A, so I'd have to find some way of "chunking" the files and I don't see an obvious way of grouping them, and even if I did, I'd have to babysit it too much, with deleting files off A's disk, restarting the process with the next chunk etc.  So is it somehow possible for me to rsync between the two servers?  I don't think I will be able to get anyone to change the hosts.allow for me :(


How to create the outer nodes effect in Blender Cycles, including the lines? I know this is achieved using a particle system, but don't know how.   Also can anybody suggest any plugins for blender that does the same?


Throwing x dice, chance of getting sum of at least y

I found some answers to this question, but that was with only two dice, with 6 sides. What if I have 30 dice, with 10 sides each (from 1 to 10). I can't make a matrix and count as was suggested on the other post.  E.g. what is the probability of getting the sum of at least 100 with 30 dice that has 10 sides each?


May I improve the logic which is out of scope of the question?

Suppose a user posts a programming question in SO with 20 lines of code.  Sometimes, I can give a solution to what was asked with a single line change, but I know that the overall approach is not correct. The approach I am thinking may increase or decrease the lines of code but will be better. This would completely replace OP's code and make the question obsolete.  Other times, the OP's question was in the first 10 lines and in the remaining 10 I found a defect.   Can I suggest the changes that don't directly answer the question? Although my feedback will not answer the question it will be improve the coding standards.  I know that I can post it as a comment but formatting coding is not great in there.  I tried to find if someone already posted this question but I dont find any, May be I am not searching with correct terms/keywords.


I have a popup window and I have 2
 within a
 the div has padding-left & padding-right and I want to put the p tags in the center of the div. how should I do it?  here is the code:

 ' + sign + '

 ' + this.sender + '

   the style  '.sign{padding-left: ' + this.sign_padding_left + ';' +   'padding-right: ' + this.sign_padding_right + ' +; font-family: IRANSharp;}' +    '.sign_text{margin-bottom: 0px; text-align: center}</style>'


stl::multimap - how do i get groups of data?

Multimap essentially has groups of data sorted by the key. I want a method by which I could access these individual groups and get their aggregate values. For example, in a std::multimap< string, int > I store   {"Group1", 1},  {"Group1", 2},  {"Group1", 3},   {"Group2", 10},  {"Group2", 11},  {"Group2", 12}   Having stored these values, I should be able to iterate this multimap and get the aggregate values of each "group". Problem is there aren't any functions defined in STL to access MultiMaps in such a way. I could use lower_bound, upper_bound to manually iterate the multimap and total the group's contents, but I am hoping there could be better ways already defined in STL ? Can anyone propose a solution as to how I could get the aggregate values for a group in the above example.


Covariance of a variable and a linear combination of other variables

Let $X,A,B,C,D$ be time-series variables and the covariance between any two pairs of these are known.  Suppose we want to find $\textrm{cov}(X,aA + bB + cC + dD)$, where $a,b,c,d$ are constants.  Is there any way of doing this without expanding out $E[(X-E[X])(aA+......)]$?


What are the benefits of playing an alignment other than True Neutral?

Alignments of Good, Evil, Lawful & Chaotic seem to be hindrances. They affect your spell choice slightly, restrict certain equipment and worst of all, they make you weak to certain forms of weapons & magic. True Neutral alignments have none of these weaknesses, and can still seem use almost all spells/equipment with alignment restrictions. What am I missing?


How do I create app folders in the GNOME application menu?

Dose anyone know how to make application folders like the 'utilities' folder? It's because I have a lot of apps and want to group them by topic.


Electron shells in atoms: What causes them to exist as they do?

I have seen similar posts, but I haven't seen what seems to be a clear and direct answer.  Why do only a certain number of electrons occupy each shell? Why are the shells arranged in certain distances from the nucleus? Why don't electrons just collapse into the nucleus or fly away?  It seems there are lots of equations and theories that describe HOW electrons behave (pauli exclusion principle), predictions about WHERE they may be located (Schrödinger equation, uncertainty principle), etc. But hard to find the WHY and/or causality behind these descriptive properties.  What is it about the nucleus and the electrons that causes them to attract/repel in the form of these shells at regular intervals and numbers of electrons per shell?  Please be patient with me, new to this forum and just an amateur fan of physics.


UK Visa has been refused for false document

I applied for a marriage visitor visa, to get married to my boyfriend of 2 years.   We met while we were students in the UK and have had vacations together in the two years but not in the U.K.   With the application I had attached an offer letter from a company stating that I have a job offer open starting 3 months later.   This however has been tagged as non genuine, although the company is registered and is run by someone I know.  How can I appeal to this?


Trying to reverse a string using recursion

I've having trouble reversing a string using recursion - I'm pretty new at this concept. I'm testing my code with the word "hello". It is only printing out 'h' at the end and not the entire string I was trying to build up during the recursion. I know using strings to add is slow but I haven't thought about making it faster right now since it is not working. public class MyClass  {     public static void main(String[] args) {         System.out.println(reversedString("hello", 0, ""));     }          public static String reversedString(String str, int index, String sb) {                  if(index == str.length()) {             return null;         }                 reversedString(str, index + 1, sb);         sb = sb + str.charAt(index);         return sb;              } }


Can anyone give the LaTeX code for the unusual symbol <<<, and perhaps provide some good examples of its use?  Does it mean "much much less than"?


Can I use a new domain to send emails from for an Email Campaign

I am trying to use a separate domain name to send emails from. But when I using like mail@marketingwebsite.com , the email goes to spam folder. About the actual domain (mail@website.com) it working good , I need to be able to communicate to clients without emails going to spam with the new domain. Any Advice's would be appreciated.


how do you determine the growth rate in from the linear model?

I have a time series data like this:  structure(list(TimePeriod = structure(c(1464926400, 1464927300,  1464928200, 1464929100, 1464930000, 1464930900, 1464931800, 1464932700,  1464933600, 1464934500), class = c("POSIXct", "POSIXt"), tzone = ""),      cpubusy = c(35.66, 37.05, 36.9, 36.66, 37.51, 37.2, 35.26,      36.81, 36.14, 36.18)), .Names = c("TimePeriod", "cpubusy" ), row.names = c(NA, 10L), class = "data.frame")   linear model:  lin<-lm(data=df, cpubusy~TimePeriod)   I am trying to read the output of lm function to determine the growth rate:  summary(lin)  Call: lm(formula = cpubusy ~ TimePeriod, data = data1)  Residuals:     Min      1Q  Median      3Q     Max  -59.188 -17.771   0.182  18.622  86.633   Coefficients:               Estimate Std. Error t value Pr(>|t|)     (Intercept) -1.661e+04  5.930e+02  -28.01   <2e-16 *** TimePeriod   1.134e-05  4.041e-07   28.07   <2e-16 *** --- Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1  Residual standard error: 29.77 on 2514 degrees of freedom Multiple R-squared:  0.2386,    Adjusted R-squared:  0.2383  F-statistic:   788 on 1 and 2514 DF,  p-value: < 2.2e-16   Would it be fair to assume that growth rate of cpubusy is equal to R-squared: 0.2386?


Was there any privacy aboard ship in ST:TNG and beyond?

(Willfully omitting TOS and Enterprise due to the lack of ship's computer and sensor sophistication)  In the real world, lots of people are concerned about privacy and data collection policies of companies like Facebook and Google.  I can hazily recall the ship's computer in TNG being used several times to locate a crewman or passenger. Also, all crewman carry communicator pins on their chest. But what about the civilian crew aboard the Enterprise?   Was there any privacy aboard ship? Was this ever addressed in an episode? Obviously I'm looking for in-canon answers.


Fill in the right word. Bread is usually made ______ wheat. 1) of 2) from 3) with 4) by


Rule of thumb for manual setting of flash for daylight fill?

I have a number of systems but have TTL flash only on one system. On another system, I use a non-TTL flash (generic) flash in either auto or manual mode. Past experience tells me that using a generic flash in the auto mode is very cumbersome, what with the zoom, aperture and so on.   So I'm thinking if we could build an easier rule of thumb to use in the manual mode for daylight fill based on the guide number of the flash, similar to the sunny 16 for correct exposure on a sunny day. On a sunny day, the backlight or side light must have similar luminance (otherwise Sunny 16 wouldn't stand), and the fill to lift a shadow on the subject's face should be of similar output as well. So, for example, if you needed 50% of the output of a GN 20 flash to nicely lift shadow on a sunny day with the subject 5 meters away at f/4, for this exercise, the GN sufficient to lift shadow on a sunny day is 14. If I had a GN 28 flash, I can accordingly increase or decrease the flash compensation based on the distance and aperture. (So, for example, if the distance to subject is still 5 meters at f/2.8, I can knock down the flash level to 1/8.)  So the question is, what's the amount of light (in terms of GN) necessary to lift shadow on a sunny day at a given distance and given aperture?  If we have that number, we can build our own rule of thumb for our respective flash. Has anyone tried to come up with this kind of rule of thumb for manual daylight fill?


Let f,g be bounded measurable functions on a set E of finite measure. Show that:  If f=a.e.g then ∫f=∫g on E  I have this proof from Cupta book, but I can't understand how this step done, depends on what?


find mac address of all connected systems

How can I find out how many system are connected to the local network and how can I get all IP and mac address of these systems. Is their any command/package to show the IP details? Can I use this command/package in our Firewall(IP Corp onLinux OS) to block unauthorized systems?


I'm working through some basic algebra. I'm struggling with the following question:     Suppose $\beta$ is transcendental over $K$. Prove that $K(\beta)$ is not algebraically closed.   I thought that the Tower law might help, and seek a contraction based on the fact that if transcendental, degree is infinite.


French visa reapplication after refusal?

Is it advisable to reapply to the French Embassy for Schengen visa after refusal? I got my refusal two days ago, for these reasons:   The information submitted regarding the justification for the purpose and the conditions of the intended stay was not reliable Your intention to leave the territory of the Member State before the expiry of the visa cannot be ascertained   I am a Philippine passport holder and work as a freelance video editor with clients locally and a main one from Australia. Is it possible to reapply immediately?


While in vim I can write a range of lines from the file I'm viewing to another file.  For example,  :1,10 w outfile.txt   will write lines 1 through 10 to outfile.txt.  Can I do the same while I'm viewing a file using less?


Is the Lie algebra of $SL(2,C)$ isomorphic to the Lie algebra of Lorentz group?

The Lie algebra of $SL(2,C)$ is given by $[X_1,X_2]=2X_2$, $[X_1,X_3]=-2X_3$ , and $[X_2,X_3]=X_1$, while the Lie algebra of the Lorentz group is given by:  $\left[J_{i}, J_{j}\right]=\epsilon_{i j k} J_{k}, \quad\left[J_{i}, K_{j}\right]=\epsilon_{i j k} K_{k}, \quad\left[K_{i}, K_{j}\right]=-\epsilon_{i j k} J_{k}$ . Why are these two Lie algebras isomorphic?


When editing my user profile (name, date of birth, etc.), how can I tell which information can be seen by other users (publicly visible) and what is only used by the system (and how it's used)?


Is there anything stopping me from checking into my flight twice?

When I'm busy, checking in to my flights via the web is often convenient. I get my boarding passes sent right to my phone and I don't need to worry about printing them before arriving to the airport. However, I also like collecting physical copies of my boarding passes. They're cool momentos of my travels more than anything else, and when I get the chance to print them out, I typically do.  My question is, if I've already checked into my flight on my phone, can I print another set of boarding passes at the airport? I do like the official airport paper ones most.  To make this question more general, consider the unfortunate situation of your phone dying. Having a backup physical copy of your boarding pass could save the day.   In essence, is there anything stopping me from making another boarding pass at the kiosk after I've checked in beforehand?


Tension in a stone, string system undergoing uniform circular motion

I've recently read that a string can be assumed to be a spring with a really high spring constant, and it applies a force in the opposite direction to the force being applied  Like in this case, notice how the weights and the tensions of m1 and m3 are in the opposite directions. Now i look at a picture of a stone tied to string undergoing uniform circular motion   and i didn't really see anything pulling the ball away from the center of the cirle for the tension to act towards the center of the circle. Clearly i went wrong somewhere, any help would really be appreciated. I've been trying to figure this out all day.


Gnome(Metacity) panel dont show system menu or any other indicators

I have installed trusty (Ubuntu 14.4) with Gnome-metacity desktop but now, my desktop doesn't show any indicators like volume level, battery status, WiFi etc. Not even a system menu.   Can any one suggest on rectifying this issue?  I have attached the screenshot of my desktop.


Undefined symbols for architecture x86_64 error in c++, header apparently isn't linked

Hi I'm having some problems with c++, when I try to compile my 3 files, main.cpp, My_Stack.cpp and My_Stack.hpp I get the "Undefined symbols for architecture x86_64" error, as if I hadn't included the header file and if I add "#include "My_Stack.cpp"" instead of "#include "My_Steak.hpp"" in main.cpp it works fine.    //main.cpp #include <iostream> #include "My_Stack.hpp"  int main(int argc, const char * argv[]) {     My_Stack<int> s = My_Stack<int>();     s.push(1);     s.push(2);     cout << s.pop() << endl;     cout << s.pop() << endl;   }     //My_Stack.hpp #ifndef My_Stack_hpp #define My_Stack_hpp  #include <stdio.h>  #include <string>  using namespace std;  template<class T> class My_Stack {  public:     My_Stack();     void push(T v);     T pop();  private:     class My_Stack_Node {     public:         T data;         My_Stack_Node* next;         My_Stack_Node(T n) {             data = n;             next = NULL;         }     };     My_Stack_Node* head;  };   #endif /* My_Stack_hpp */     //My_Stack.cpp #include "My_Stack.hpp"  #include <string> #include <sstream>  using namespace std;  template<class T> My_Stack<T>::My_Stack() {     this->head = NULL; }  template<class T> void My_Stack<T>::push(T v) {     if (this->head == NULL) {         this->head = new My_Stack_Node(v);     }     else {         My_Stack_Node* aux = new My_Stack_Node(v);         aux->next = this->head;         this->head = aux;     } }  template<class T> T My_Stack<T>::pop() {     My_Stack_Node* aux = this->head;     this->head = this->head->next;     return aux->data; }


I can't see my name in close question tag

I flag questions that are duplicates, no real questions, not useful, etc. I got 90 helpful flags.  I can't see my name below the question I flag to be closed. Why?


What apps can view crash reports on iOS?

It's cumbersome to sync with iTunes to get a crash report. I'm looking for an app that can view and copy/paste or email crash reports from any other app on my iPhone. I want to see the full stack trace from the crash.  Is there an app for that?


Is there a point in collecting all the flags in Assassin's Creed?

There are many collectable flags throughout the game of Assassin's Creed and every time one is collected, you get a progress indicator (e.g., 33 of 100).  Is there any reason to collect these, other than bragging rights?  I recall getting all available flags in one particular town and never saw any special reward or secret revealed.


Area 51 topbar throws an error when trying to load the achievements

While trying to load the achievements dialog on any area51 page, it shows a dialog with the following error message:    Browser is Chrome 58.0.3029.96 on Windows 8.1, with HTTPS Everywhere (although disabling the Stack Exchange rule has no effect).


How to automatically rotate images based on EXIF data?

I know how to . Now I would like to automate that based on EXIF data. I already have exiftool installed, but looks like it can only read the data, but can not rotate the image.  There is . But I'm looking for possible solutions using OSX.


Optimal 5e warlock for DPR/AC with blade pact no multiclass

I'm looking for ideas on the best way to build a 5e blade warlock for melee dps/ac without multiclassing. Feats and variant human are options, point buy for stats up to 15 initial cap.   I'm not so interested in ranged capabilities or which patron (though probably fiend would be optimum) or which race( as long as they're from the PHB or the elemental evil player companion). Sustained DPR versus burst is preferred, and ideally it would survive through leveling.  As opposed to  I'll be using either a feat or ability score not both and the starting cap would be 15 not 16.


Short story identification: society partitioned off by high wall

Reading another question today reminded me of a short story I read in the early 90s (probably written in 60s or 70s though). A society is blocked off by a really high wall; the story follows a girl who tries to get over the wall. I think she manages it with a hot air balloon. When she reaches the other side she meets an older man who had managed to scale the wall in his youth - his solution had been to use a flock of birds to carry him.  UPDATE  I seem to recall that it splits off an elite group of people - getting over the wall is like a rite of passage. Most people don't even bother to get over it (or even be concerned by its existence at all), but a few try. There might be some magic involved (on the other / better side), or they might just be more advanced technologically.  FINAL UPDATE  As pointed out in the answer, and confirmed by me re-reading the story, I was mistaken in a few details. The main protagonist is not a girl, it's a boy called Porgie. He doesn't use a balloon, it's a glider he made, assisted with a broom. Magic is involved, but it's on the inside, with technology on the outside.


My witch doctor died. What needs to be done or what criteria need to be met for him to respawn? I tried building an additional house to no effect.


"He must be in the room". "He must be inside the room" what is to be be used?

"He must be in the room."       "He must be inside the room."     Which one is correct? Which preposition is suitable for this sentence?  I think, "He must be in the room." This one is usually used.


$$\lim_{n\to\infty}1+\sqrt[2]{2+\sqrt[3]{3+\sqrt[4]{4+\ldots+\sqrt[n]{n}}}}$$  I have no idea about this.  The equation can be written in its recursive form as:  $$f(n) = g(1,n)$$  Where  $$g(x,n) = [x\impliedby n]\cdot (x+ g(x+1,n))^{\frac 1x}+[x=n]\cdot (n)^{\frac 1n}$$  Of course, [] is the indicator function representing of piece wise notation.


I am stuck on the following problem. I believe that my solution is right so far, but I do not know how to finish the problem. Ideally, I would like to do this problem without using moment generating functions or the idea of the convolution. Maybe that is not a realistic goal. Thanks, Bob Problem: Let $X$ and $Y$ be independent binomial r.v.'s with parameters $(n,p)$ and $(m,p)$, respectively. Let $Z = X + Y$. What is the distribution of $Z$? Answer: \begin{eqnarray*} P(Z = k) &=& \sum_{i = 0}^{k} P(X = i)P(Y = k-i) \\ P(Z = k) &=&  \sum_{i = 0}^{k} {n \choose i}p^i(1-p)^{n-i}     {m \choose {k-i} } p^{k-i}(1- p)^{m -(k-i)} \\ P(Z = k) &=&  \sum_{i = 0}^{k} {n \choose i}p^k(1-p)^{n-i}    {m \choose {k-i} } (1- p)^{m -k+i} \\ P(Z = k) &=&  \sum_{i = 0}^{k} {n \choose i}p^k(1-p)^{n+m-k}   {m \choose {k-i} } \\ \end{eqnarray*}


Would additional low voltage DC sockets be practical on mass scale?

In RL I noticed that power supply cables with possibility to charge one mobile through USB compatible socket actually exist:   I actually started to wonder, whether for purpose of world building such idea could be move much more further. I mean both electronics and LED light has to convert electricity to low voltage DC, so the voltage would be already converted earlier.  OK, so the question is following: Would additional low voltage DC sockets be practical on mass scale for purpose of connecting small electronics and light? (Safety gains? More efficient conversion at socket instead of dozens of tiny converters? Only less cable clutter? Extra: Roughly which voltage would be reasonable?)  Clarification: I'm trying to make a setting, which is technically modern-like, but quite a few technologies and standards evolved in different direction. Instead of too improbable ideas like steampunk, I mostly try to use ideas that are technically feasible and reasonable enough, just in RL turned out not to be specially popular. I really doubt, that's a good question for EE because, they can can reasonably answer, that right now in RL trying to implement such standard would be not worth the effort.  It's like question concerning airships, ammo, etc... just not so cool.


How can I show that $\frac{1}{1+|z|^2}$ isn't analytic at $z=1$? I thought: $\frac{1}{1+|z|^2}=\frac{1}{1+x^2+y^2}$ (substituting $z=x+yi$). We calculate the Cauchy-Riemann equations and we get that $u_x=-2x$, $u_y=-2y$, $v_x=v_y=0$. So this function is only analytic at $z=0$. Is this right?


Enable the community to handle "not an answer" flags without diamond intervention

New users posting thanks, comments or new questions as answers on existing questions is very common. It is also something that should be easily handled by the community itself, without requiring diamond moderators to intervene. The action that need to be taken in such a case are:  commenting on the post to explain that answers shouldn't be used in this way deleting the post in rare cases where the post contains valuable information, but isn't an answer, it can be converted to a comment  Problems with the current tools Commenting can be done by the community, though . In theory, the community can delete such posts. The post needs to be downvoted and three 20k+ users need to vote to delete it. There are several problems with that, making community deletion rather rare. The other problem with community deletion is that the bar is very high, there just aren't that many 20k+ users on most site. And reputation alone isn't a very good way to determine who should have access to that kind of moderator tool. Conversion to comment is a mod-only feature, and probably should stay that way. The temptation to do the nicer thing and just convert to a comment when the post should probably be deleted is pretty high. My possible solution There are a lot of users that know the SE system well and can reliably identify non-answers, but don't have the 20k reputation necessary to fully act on them. It shouldn't be too hard to identify these user based on their flagging volume and success. I think that a criterium like "flagged x posts as not an answer with at least y% declared valid" would be a far better way to identify trustworthy users than the current 20k+ reputation requirement. For those users that are determined to be trustworthy, either the "not an answer" flags should automatically delete the post when enough of them are cast by trusted users and if at least one of them has commented on the post. This would enable those users to deal with "not an answer" flags without requiring a moderator to step in. As a way to safeguard these expanded privileges against abuse or mistakes I'd suggest that even a single "disputed" flag would disable the automatic mechanisms and force the flag to be handled by a diamond moderator. A different possibility would be to just give those users a delete link on "not an answer"-flagged posts.


Clone the command prompt display properties

I'm working with several Windows 10 machines and often installing new OS builds, and I only know how to customize the command prompt display by manually adjusting the font, colors, etc. in the properties dialog. Is there a way to copy the settings from a particular command prompt shortcut and automatically apply them to another shortcut, possibly on another machine?   I don't want the change to affect all command prompts on the machine, so the registry defaults are not an option. For example, I use different color backgrounds for different environments, so I can easily tell them apart. This needs to be applied to each command prompt shortcut separately, not to the global defaults.


I need help with this question. I tried, but couldn't do it. How do I approach it?    I tried this approach. The problem is, even though it's obvious (by intuition) that the series (A1+A2+A3+......) adds up to less than 1, I can't show it that it does indeed add up to less than 1. Because the series is irregular, without a pattern. How do I prove it? I don't even know if this is the right approach, so please help me with it. Thanks


So, 2 days ago I learned that quantum entanglement is just about our perception. There is not an active link between particles and they are not communicating with each other. But then, while surfing on the internet this page came up   It says: ""If I jiggle one electron, the other electron 'senses' this vibration instantly, faster than the speed of light. Einstein thought that this therefore disproved the quantum theory, since nothing can go faster than light," Kaku wrote."  and then I read about EPR paradox and really confused. If there is not an active link between quantum particles what Kaku is talking about ? Can someone explain?


Sauron's decision to put the majority of his power into a magic ring seems to be a very big gamble even with the (potential) payoff of being able to control the other rings.  Is there any description in the LOTR books to explain why would Sauron take such a monumental risk?  Did he not know that if he lost the ring, he'd be naught but a shell of himself?


How did nobody at Hogwarts (especially Dumbledore) figure out what killed Myrtle?

The information is all clearly there, since Harry and Ron, two 12-year-olds, were able to figure it out (with a bit of help from a petrified Hermione), thought at the time Aragog was much younger and smaller and wouldn't have been as easy to find, so maybe the "spiders flee before it" clue would have been lost, although to be honest it's not exactly as vital a piece of the puzzle as the others.  Dumbledore himself is obviously a very capable and intelligent Wizard, and after Myrtle died she came back as a ghost and was able to provide (admittedly limited) details of her own death.  I don't know about you, but I'd have thought at least someone would have tried to piece it together at the time, and it wouldn't have taken them long to figure out "Oh, she saw a pair of big yellow eyes after hearing a boy speak a funny language in the bathroom and dropped dead? Sounds like she might have heard somebody order a Basilisk to look her in the eyes in parseltongue", especially if the investigator in question was someone like Dumbledore.  Do we have any info on why nobody seemed to have found out anything in 50 years prior to Harry Potter (and, probably more importantly, Hermione Granger) turning up at Hogwarts?


Prove that $\sum_{k=1}^{p-1} k^i$ is divisible by $p$

Let $p$ be an odd prime. Prove that $$1^i + 2^i + \cdots + (p-1)^i \equiv 0 \pmod{p}$$ for all $i$, $1 \le i \le (p-2)$.   If $i$ is odd, then we are done, since $j^i + (p-j)^i \equiv 0 \pmod{p}$ for every $j$. But how can we prove this if $i$ is even? Any ideas? Thanks for your help.


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

I tried to install a 64bit Anaconda on 32bit Ubuntu(thought I had 64bit) and it stopped in error,so before installing the correct version should I get rid of what is already installed to avoid conflict and keep memory clear, and if so how would I go about it? I am a big time Linux newbie by the way. Thanks for any tips.


In categorical terms, why is there no canonical isomorphism from a finite dimensional vector space to its dual?

I've read in several places that one motivation for category theory was to be able to give precise meaning to statements like, "finite dimensional vector spaces are canonically isomorphic to their double duals; they are isomorphic to their duals as well, but not canonically."  I've finally sat down to work through this, and -  Okay, yes, it is easy to see that the "canonical isomorphism" from $V$ to $V^{**}$ is a functor that has a natural isomorphism (in the sense of category theory) to the identity functor.  Also, I see that there is no way that the functor $V\mapsto V^*$ could have a natural isomorphism to the identity functor, because it is contravariant whereas the identity functor is covariant. My question amounts to:     Is contravariance the whole problem?   To elaborate:   I was initially disappointed by the realization that the definition of natural isomorphism doesn't apply to a pair of functors one of which is covariant and the other contravariant, because I was hoping that the lack of a canonical isomorphism $V\rightarrow V^*$ would feel more like a theorem as opposed to an artifact of the inapplicability of a definition.  Then I tried to create a definition of a natural transformation from a covariant functor $F:\mathscr{A}\rightarrow\mathscr{B}$ to a contravariant functor $G:\mathscr{A}\rightarrow\mathscr{B}$. It seems to me that this definition should be that all objects $A\in\mathscr{A}$ get a morphism $m_A:F(A)\rightarrow G(A)$ such that for all morphisms $f:A\rightarrow A'$ of $\mathscr{A}$, the following diagram (in $\mathscr{B}$) commutes:  $$\require{AMScd}\begin{CD} F(A) @>m_A>> G(A)\\ @VF(f)VV @AAG(f)A\\ F(A') @>>m_{A'}> G(A') \end{CD}$$  This is much more stringent a demand on the $m_A$ than the typical definition of a natural transformation.  Indeed, it is asking that $m_A=G(f)\circ m_{A'}\circ F(f)$, regardless of how $f$ or $A'$ may vary. Taking $\mathscr{A}=\mathscr{B}=\text{f.d.Vec}_k$, $F$ the identity functor and $G$ the dualizing functor, it is clear that this definition can never be satisfied unless $m_V$ is the zero map for all $V\in\text{f.d.Vec}_k$ (because take $f$ to be the zero map). In particular, it cannot be satisfied if $m_V$ is required to be an isomorphism.     Is this the right way to understand (categorically) why there is no natural isomorphism $V\rightarrow V^*$?   As an aside, are there any interesting cases of some kind of analog (the above definition or another) of natural transformations from covariant to contravariant functors?  Note: I have read a number of math.SE answers regarding why $V^*$ is not naturally isomorphic to $V$. None that I have found are addressed to what I'm asking here, which is about how categories make the question and answer precise. ( was closest.) Hence my question here.


I recently downloaded Texmaker to my Mac running OS Lion. It works good apart from that i can't see my dots and commas in the tex editor. I've tried changing the font size but the problem persists. Has anyone had similar problems and are there any known solutions ?


Can I get a Malaysian visa if I have a departure ticket from Kuala Lumpur instead of a round-trip ticket?

I want to apply for Thailand and Malaysian visas, as I am visiting these 2 countries as a tourist.  Can I get a visa for these 2 countries, without having a round-trip ticket?  I'll book a ticket to Thailand, travel to Malaysia by road, and from Malaysia I have a return ticket back to India, will I be able to get a visa with this return ticket?


Where Can I download older version of TeXLive?

I need to download TeXlive 2011 for some special reason. But I can't find it in  website there is only latest version of TexLive.  Any help will be appreciated.  thanks.  Edit: the Question  is about macTex not Texlive. Even Though the answer is general answer that works for this question.


How can I allow my proxy server's destination to be itself?

I'm trying to setup ssh over https using apache and proxytunnel on Ubuntu 18.04, but I want the proxy server to be the same as the ssh server.  I have apache going, and from netstat and the output of ssh -vvvv, it looks like I'm successfully connecting to the apache server as after awhile it says HTTP return code: 503 Service Unavailable and netstat shows an established connection between my laptop and the server. It looks like it is getting hung up trying to connect to itself over ssh.  Line from netstat: tcp        0      1 192.168.2.195:51156     public_ip:22      SYN_SENT    24246/apache2  It gets stuck here until it eventually returns bad request. The server is behind a NAT, so that may be contributing to the issue.  I was wondering if there is an elegant way to have the server connect to localhost instead of having it connect to the router and get reforwarded back to the server  Thanks in advance, let me know if you need more info.


How to troubleshoot a Nikon D5100 that will not autofocus at all?

A good friend of mine has a d5100, which was working perfectly fine yesterday. Today, however, it refuses to autofocus at all - it makes no effort to move the focusing ring etc.  I have tried everything I know, from the obvious (making sure it's set to auto, not manual focus), to the less obvious (changing AF-L settings, trying Live View), to the downright desperate (trying every mode, random setting, and a menu reset) among others. I have also tried changing lenses, but the problem is the same.  This points to the problem almost certainly being in the camera body. The lens contacts are clean, the lenses were correctly fitted and it was bright enough to autofocus.  Currently I have no ideas other than a faulty shutter release button, broken circuitry (unlikely), or some bizzare instant-burnout of the lenses' AF motors.  Please, does anybody know anything about this? Thanks in advance, I will be eternally grateful (and owe you a beer/wine/tea/soft beverage if we ever meet!).


I work in internal, and I made a model shoot fire. For some reason it looks very low res. What can I do to fix this? an image has been attached:


I am writing an academic report and I am trying to figure out how to punctuate the following:     The previous results cannot provide an answer to questions like, what is the probability of X given Y and Z ?, because the precise correlations between the variables are still unknown.   My questions are:   Should I use italics for the question, wrap it with quotes or not use any indication on it? Should I put a question mark at the end of it? Do I need commas before and after the question?   I have read the answers to this related question: . However, I'm not sure this is the same case, as it is not really an internal though but more like an open question to the reader.  Reformulations of the sentence are also welcome.  PD: I'll kind of abuse the question here, but just checking, that usage of regular font within italicized text to emphasize the hypothetical variable names is ok, right?


I'm paranoid about this, but hopefully it's a simple question:  Is there any difference between  cat file1 | egrep -oP "[Mm]y string" > /home/user/file.txt   and  cat file1|egrep -oP "[Mm]y string">/home/user/file.txt   i.e., does it matter if I have spaces padding the pipe (|) and redirection (>) characters? I'm really paranoid that having spaces there the spaces will somehow end up in the output file when I don't want that. Can anyone clarify? (Using Ubuntu 12/bash if that matters.)


Resolution conversion of digital elevation models in ArcGIS 10.2

I am a beginner in ArcGIS. How the resolution of original DEM (ASTER, SRTM or Cartosat DEM) can be converted to coarser and finer resolutions in ArcGIS 10.2...?


Gnome-shell can't install - broken packages

I am trying to install gnome-shell but it shows me an error:  $ sudo apt-get install gnome-shell  ...  Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation:  The following packages have unmet dependencies:  gnome_shell : Depends: gnome-settings-daemon (>= 3.4.0) but it is not going to be installed                Recommends: gnome-control-center but it is not going to be installed E: Unable to correct problems, you have held broken packages.       sudo apt-get update && sudo apt-get upgrade     sudo apt-get -f install     sudo apt-get install gnome-shell     From comments:  $ sudo apt-get install -f gnome-shell gnome-control-center gnome-settings-daemon The following information may help to resolve the situation:  The following packages have unmet dependencies:  gnome-settings-daemon : Depends: gnome-settings-daemon-schemas (= 3.12.2-0ubuntu1~trusty3) but 3.8.6.1-0ubuntu11.2 is to be installed E: Unable to correct problems, you have held broken packages.


My friend and I were arguing about this and I was wondering if someone out there could settle this for us.    Basically, he and I were walking to buy some stamps. When we were on our return trip he made the assertion that when I returned to my desk, which is where our trip began, I would have accomplished zero "net work". That is, utilizing our admittedly simple understanding of work from Wikipedia:       In physics, a force is said to do work when it acts on a body, and there is a displacement of the point of application in the direction of the force.   when I return to my departure point, that is my desk, the total displacement would be zero and using the definition from Wikipedia that $W = Fd$ and $d$ is displacement, no work was done. Intuitively, I suggested that there were two quantities of work done, one quantity of work from my desk to the shop and one quantity of work from the shop to my desk, but when I look at some decriptions of a displacement vector, I feel like the two displacements may also cancel each other out. Can someone help us sort this out?    Thanks in advance for the help!


How to find which process made this network requests

I was running fiddler and suddenly I see requests this requests to   hxxp://zc.qq.com/cgi-bin/chs/numreg/init?  and  hxxp://www.baidu.com/cache/global/img/gs-2.0.gif  But no process is shown. How do I Identify which process made the requests. This seem to be tracking requests. Both request's responses try to set cookies. But I don't remember installing anything related to qq and baidu. More Information: I stay in India. OS: Win7.1    This requests seem to be repeated after around 6 minutes I tried TCPView.


Distances between closed sets on metric spaces

Which says that $\mathbb R^n$ the distance between a point $b$ and a set $X$ defined by$$ \inf \left\{ d(b,x) \mid x \in X \right\} $$  The proposition:      If $X$ is closed, this distance is reached at some point in the set $X$.    To prove it I assumed without loss of generality that $X$ is also bounded, because if not, it intersected with (e.g.) $$ B_b (n) = \left\{ x \in \mathbb R^n \mid d(b,x) \leqslant n \right\}, $$ where $n$ for example, can be chosen as the first natural number such that the intersection is not empty, and obviously the rest of the points of $X$, are at a greater distance, and will not be candidates.  Then define $$ f(x) = \left| x - b \right| \quad \text{for }x \in X $$ and since the domain is compact we conclude the result, that reaches its minimum at some point in the set. This demonstration clearly not true for any metric space, because  being closed and bounded is not enough to be compact in general, but anyway maybe it can be shown in a more general way. That is my question, is this true?


Why does a CD work as a diffraction grating even with light from a light bulb?

I have a really hard time solving the following problem I accidentally came across today. Looking at the back of a usual CD one sees coloured bands. This is explained by the fact that the surface (pits and bumps) is effectively a diffraction grating. But why is this effect already visible when one uses incoherent light, e.g. from a light bulb, whereas the interference pattern of a single or double slit would be missing with such illumination?


Is there an ARM based ubuntu OS I can install on the Microsoft Surface RT?

Since the price of the Microsoft Surface has dropped significantly, I'm seriously considering getting one. The only problem - I hate Windows. I would really love to install Ubuntu on it - even if I have to run it from a flash drive. I just would like double assurance, and maybe some instruction on how I could do the install! Either way, I think you guy will be able to help me on this one. If I can't, then I'll probably just buy an iPad Mini (which wouldn't be AS cool...) Cheers! - Mike


What is the value of $\int_{0}^{2\pi}f(e^{it}) \cos t \, dt$ if $f$ is analytic?

If $f(z)$ is an analytic function, then find the value of the integration $$\int_{0}^{2\pi}f(e^{it}) \cos t \, dt.$$  My Work: Taking $e^{it} = z$ the integrand becomes of the form $$i\frac{f(z)\operatorname{Re(z)}}{z}$$ on the simple closed contour $|z|=1$. But how can I proceed from here? Please help.


I have used SO_REUSEADDR to have my server which got terminated to restart with out complaining that the socket is already is in use. I was wondering if there are other uses of SO_REUSEADDR? Have anyone used the socket option for other than the said purpose?


Meaning of "BY" when talking about long time periods

I am confused about the following sentence:  "By the sophomore year, the student should apply for special education services"  Does it mean the students should do it before the 2nd year begins or just after OR it should be done before the end of the 2nd year?  In typical examples, like: "I need to do it by tomorrow" or "By the time we got there, the film had started" it doesn't seem to matter, but what if the period is a year?  EDIT: There's been an error on my part. The original sentence reads:   "By senior year, and/or prior to age 18, apply for..."  though the question remains...  EDIT2: There's actually more examples: See   pages 30-31.


I'm on Yosemite at the moment I want to upgrade but I fear it will break my applications. I have a MacBook Pro (Late 2011) 15''. The last time I updated my Logic Pro 8 broke and I was forced to pay $200 for Logic Pro X (it is my theory that Apple did that on purpose) but either way, what is your suggestion on the Operating System nonsense?


Google Search Console domain property not in the list of properties I can add to Google Analytics

I'm trying to connect a domain property to a google analytics domain. But when the property I added is not in the list of properties where I can choose from.  All the other properties are. The big difference is that the newly added property is a domain property. All the others are regular properties. Is there a new way to connect this domain properties to google analytics?


I want to reopen the stdin and stdout (and perhaps stderr while I'm at it) filehandles, so that future calls to printf() or putchar() or puts() will go to a file, and future calls to getc() and such will come from a file.  1) I don't want to permanently lose standard input/output/error. I may want to reuse them later in the program.  2) I don't want to open new filehandles because these filehandles would have to be either passed around a lot or global (shudder).  3) I don't want to use any open() or fork() or other system-dependent functions if I can't help it.  So basically, does it work to do this:  stdin = fopen("newin", "r");   And, if it does, how can I get the original value of stdin back? Do I have to store it in a FILE * and just get it back later?


I have a generic class ValueCriterion that take another class type as parameter. Following code works fine.   new ValueCriterion<,CrashDetected>(0));   Where CrashDetected is a class.   But when I get the type of the CrashDetected class using the following code.  Type myType = Type.GetType("NetworkDB." + "CrashDetected");   and pass myType to ValueCriterion, the compiler gives me the following error:  new ValueCriterion<,myType>(0));      Error 1   Using the generic type requires 1 type arguments.    I will highly appreciate any help.


Defining upright codimension math operator

How to write $\text{codim}(Y)$ without \text{codim}?  Is there command like \dim that I can use to write codimension?


Javascript: Eventlistener 'keydown' not registering all keys pressed when holding down other keys

Sollution provided in the comments. The issue is that my keyboard has what is called ghosting issues, this means it doesn't support some key combinations when pressed together.  When the user holds 's' and 'd' key at the same time (movement keys, so character would move south-east), and during this presses the 'n' or 'm' key, the keydown event of the 'n' and 'm' key is not triggered. This happens with other key combinations as well, but not with all. Per example: holding down the 'w' and 'a' key will trigger the 'n' and 'm' keydown events. Is there a way to allow any keydown event to be triggered, regardless of other keys pressed? You can test this behavior using the following code:  document.addEventListener('keydown', (e) => {     console.log(e.key); });


I'm getting a warning from ReSharper about a call to a virtual member from my objects constructor.   Why would this be something not to do?


Preventing SQL Injection for iOS Swift App

I am designing an iOS mobile app in Swift which uses a remote SQL database for its backend. This app has a lot of interactions with the database, due to this I want to ensure it is safe from SQL injection. My first idea was to check in Swift if the text in the UITextView contains any blacklisted words, however after reading this:    I'm not sure if blacklisting is a good idea; although I'm not sure about the degree to which these problems affect mobile apps; as this was written about websites. Another thing I read about was using parametirised queries, although I don't really understand what this means exactly as most examples I read were designed for websites as well; the way I currently connect to my database is through sending a POST request from a NSURLSession to a PHP script on my server. This is a typical example of what I do in my PHP script :    $user_id = $_POST['user_id'];  $second_field = $_POST['second_field'];   $conn=mysqli_connect("localhost", "***", "***","***");   $result = mysqli_query($conn,"INSERT INTO my_table (user_id, second_field) VALUES ('$user_id', '$second_field')");


Evaluate $\int^{\pi/2}_0 \frac 1 {1+\tan^\sqrt2x}dx$.

Evaluate $\displaystyle \int^{\pi/2}_0 \frac 1 {1+\tan^\sqrt2x}dx$.   I tried many different methods but all failed, and I start suspecting that I can't do it in normal way (i.e. find the indefinite integral first, then substitute that bounds). I have no idea what I should do. Please give some idea!!


How to set a letter to the margin of the page and position it vertically according to alphabetical order?

I would like to place a letter (that indicates which letter in the dictionary is shown) on the outer side of the book, set it for example in a darker box and position that letter vertically. Users of the dictionary can later easily access  a searched headword by using the letter division on the side.   Minimum example:  \documentclass[twocolumn]{book} \usepackage[top=1.5cm, bottom=1.5cm, left=2cm, right=2cm]{geometry} \usepackage{fancyhdr} \usepackage[utf8x, utf8]{inputenc} \usepackage[T1]{fontenc} \newcommand\entry[3][]{\hangpara{2em}{1}{\fontfamily{phv} selectfont{\textbf{{#2}}}}\      #3\ifx\relax#1\relax\markboth{#2}{#2}\else\markboth{#1}{#1}\fi     \par}\nopagebreak[4] \newcommand*{\dictchar}[1]{\centerline{\LARGE\textbf{#1}}\par} \pagestyle{fancy} \fancypagestyle{basicstyle}{% \fancyhf{} \renewcommand{\headrulewidth}{0.4pt} \renewcommand{\footrulewidth}{0pt} \fancyhead[LE,RO]{\textbf{\chaptitle}} \fancyhead[LO,RE]{\textbf{\thepage}}} \fancypagestyle{dictstyle}{% \fancyhf{} \fancyhead[LE,LO]{{\fontfamily{phv}\selectfont{\textbf{\rightmark}}}} \fancyhead[CO,CE]{\thepage} \fancyhead[RE,RO]{{\fontfamily{phv}\selectfont{\textbf{\leftmark}}}}} \begin{document} \pagestyle{dictstyle} \dictchar{a} \entry[headwords]{headwords}{translations} \clearpage \dictchar{b} \entry[headwords]{headwords}{translations} \end{document}   How can I place thumb indexes from \dictchar values now to the right odd and left even margin?


Do I need a visa when travelling through Brussels from South Africa

We are travelling to the UK from South Africa and I have a UK visa, but do I need a transit visa for Brussels, Belgium for a technical stop over?


Does a (charged) black hole evaporate its charge?

There are basically two types of charged black holes,  Reissner–Nordström, and Kerr–Newman.     Next, Hawking radiation itself is mostly electromagnetic. The numerous popular articles which say that Hawking radiation is particle/anti-particle pairs in which one of each pair gets swallowed by the black hole are misleading. Hawking radiation is almost entirely electromagnetic radiation---that is, photons. You can still use the language of particle/anti-particle, but it is a bit misleading.     This answer claims that Hawking radiation is just photons. Photons are EM neutral.  Now basically there are different interpretations of Hawking radiation, but what they mainly say is that the evaporation itself does not come from the black hole itself (nothing can escape the black hole), but from near outside the horizon.     Hawking radiation comes from the horizon, not from the black hole itself   If you are worrying if your hypothetical black hole completely evaporates, i.e. no more horizon, it means that the electrons will just disperse due to the electrostatic repulsion, (once the body stops being a black hole).       Now these answers claim that BHs evaporate in a way that their leftovers are basically charged particles, that is, the charge that the BH did not evaporate stays during evaporation, until the BH's mass is not enough to create a event horizon anymore, and the BH ceases to exist anymore, and the leftover electrons just disperse.  Based on these it might be possible that the BH evaporates just photons, EM neutral particles, thus no EM charge is really evaporated from the BH, and the BH keeps its entire charge during the whole process of evaporation. At that point, as the BH's mass reduces so that it cannot create a event horizon anymore, the leftover electrons just disperse.  Question:   Does a BH evaporate its EM charge?


Path Bevel With Different Thickness Along the Vertices

Hi guys I have a path that generates a extrusion from a Bevel Object, but I need certain vertices with different bevel size. I tried to select the vertices, I can tilt them pressing Ctrl+T, but I cannot change the size of the generated bevel in that specific point.


What do the numbers indicate which are displayed on the left side of the profile image?

If we click on  in any tag, we can see as in the below image.  Here I didn't understand 11, 4, 5K, and 800 which is displayed on the left side of the profile image.


Matrix - Extra alignment tab has been changed to \cr


What exactly exactly is the difference between rms and average voltage value

I hear that rms is the ac value which would produce the same heat effect as a dc value... but I don't understand why this rms is different from average value. I also read that the average value of an ac value is zero for a full circle. But why is the rms value of an ac half circle not the same value of that ac half circle .


How to present a vertical multiplication/addition

How do I present vertical (columnar) multiplication and addition in LaTeX. Like this:       3 8 4 x     5 6 ---------   2 3 0 4 1 9 2 0 --------- 2 1 5 0 4   I used the "array" environment. But i have right align problem. Any other best ideas?


Today I've received several messages of people distributing invites for .  The first red flag is that the only way to participate is by being invited, which smells like a pyramid scheme. If it was something legitimate, why only allow entering with an invite? Just for marketing purposes?  The second red flag is that it's a thing full of beautiful promises but has nothing concrete at all.  On the other hand:   I don't see the "scammers" getting anything at all out of this: looks like you only have to give your name and email. There's not an "entry fee" like the usual pyramid schemes. Apparently reputable people are involved (creators of PayPal)? Does this mean anything?   So what's the point? Is there any logic in this? How does this work?


How to spell what sounds like "ish" or "eesh"?

I've heard this word a lot of times, but still don't know how to write it down. It's used when you want to show some kind of disgust, or something like that. It sounds like "ish" or "eesh".  I've heard it used like so:     Ish, calm down, will you?   Or:     –  I've heard they're re-writing that book.   –  Ish, I've always hated it.


Is there a significant advantage to more expensive 50mm prime lenses?

I own a Nikon D3200 and I want to buy a 50mm Prime Lens. But this question is not general about Nikon. Some other brands released their own premium 50mm lenses and they are up to 5x as expensive compared to Nikon or Canon's primes.   Canon EF 50mm f/1.4 USM  Nikon AF-S NIKKOR 50 mm 1:1,4G  Nikon AF-S NIKKOR 50 mm 1:1,8G   others:   Sony Zeiss Planar T 50mm F1,4 ZA SSM Sigma 50mm F1,4 DG HSM Zeiss 50mm f/1.4 Planar T* ZF.2 manual focus   Is there a advantage when I spend $1000 for a 50mm prime compared to Nikon's 50mm 1.8 for $150?


Anchor links for sharing specific answers

I want to be able to share answers using anchor links, such that when the link is visited, the page scrolls to the particular answer instead of showing the top of the page.  A good example is seen with this .


What visa do I need to apply for going to Russia?

I am an Indian citizen. My final destination is Venice (Italy) through Moscow (48 hour layover) from the same airport. Travel blogs says that I don't need transit visa if I am not crossing the immigration gate for 24-hours but on above that I need to apply for transit visa. However my travel plans are:   India to Moscow (through Aeroflot) Staying in Moscow for 48 hours  Moscow to Venice (through Aeroflot and same airport)   I need to apply transit visa for sure but can I apply at the Russian Airport transit zone?


I'm pretty new to Python and I'm trying to make a discord bot using discord.py and the idea is that you can earn coins that are showed on your profile. The problem is that I need to store the profiles in a single file so it looks like this  userID1,10 userID2,20 userID3,30   Expected output:  userID1,10 userID2,120 userID3,30   Basically "discord id of a user,amount of coins" and I'm trying to replace the line but with a different amount of coins and I have no idea on how to do this without making another file.  This is all I have right now.  def addExp(userID,Points):     with open(fname) as f:         for line in f:             if userID in line:                 info = line.split(',')                 newPoints= int(info[1]) + Points   UserID is the ID of an user so it's different for each user and Points is the amount of points I want to add


How to read a value from the Windows registry

Given the key for some registry value (e.g. HKEY_LOCAL_MACHINE\blah\blah\blah\foo) how can I:   Safely determine that such a key exists. Programmatically (i.e. with code) get its value.   I have absolutely no intention of writing anything back to the registry (for the duration of my career if I can help it). So we can skip the lecture about every molecule in my body exploding at the speed of light if I write to the registry incorrectly.   Prefer answers in C++, but mostly just need to know what the special Windows API incantation to get at the value is.


Could any form of matter teleportation every really happen?  If so, what form would it take? Some science-fiction talks about literally sending the atoms from one location to another; others talk of creating a duplicate and destroying the original.  Question originally added .  Update: there are a couple of comments asking me to specify what I mean by teleportation. I'm talking about stuff of Star Trek - taking an object or person and transporting them almost instantly across great distances (thousands of KMs) by:   breaking them up at the atomic (or smaller) level transporting those atomic components (or the information, "recipe" to recreate) and (re-)assembling at the new location.


Prove that $m+\frac{4}{m^2}\geq3$ for every $m > 0$

How to deal with $m+\frac{4}{m^2}\geq3$ for every $m > 0$ ? I multiplied both sides by $m^2$ and got $m^3+4-3m^2\geq0$ and have no idea how to continue with this


Proof of conservation of spacetime interval

In  as well as in Landau's textbook on classical field theory, there is a proof of the conservation of spacetime interval in which authors deduce, that the differentials of the interval in two different inertial reference frames are infinitesimals of the same order and therefore must be proportional. What does it mean and how can you prove it without refering to the properties of Lorentz transform, which is to be derived from conservation of spacetime interval.


Let $f : [0, +\infty) \rightarrow \mathbb{R}$ be uniformly continuous. Show that $f$ has sublinear growth  I need to show that there exists $A,B > 0$ such that |$f(x)| ≤ Ax + B$, for all $x ≥ 0$  I was thinking of using the definition of uniform continuity for $\epsilon = 1$ to show that all the values of $x \in [0, +\infty)$ are obtained in tiny steps without changing the value of $f$ much.


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

I have often come upon questions where the asker never bothered accepting what is obviously a correct answer. "Obviously" can mean (aside from my own judgment):   The answer is a clear leader in up-votes (again, combined with my judgment that it is a correct one) The answer is the only one (and again appears correct) The answer (or Q) is commented on by OP indicating it helped.   If the user is still active on SO, what helps sometimes is to post a comment on the question mentioning you can/should accept the answer. For my own answers, this technique worked ~30-50% of the time.  However, if the user is a zombie (showed up >1 month ago, asked one or few answers, and was not on the site for >1 month since), this would obviously not work.  To ameliorate this situation, I would propose allowing users whose rep > threshold to "accept" answers from other peoples questions. This would be limited to:   questions from zombie users as defined above (e.g. total active time on site <= 30% of time since last visit, or however you want to define). questions from non-zombie users with very low accept rates (this may require higher threshold).   In either case,   neither the OP nor "guest acceptor" gains 2 points for accepting. the OP should have the right to choose a different accepted answer at any time, and get 2 points rep when that happens. If you accept your own answer, you obviously don't get 15rep for acceptance.   I think if implemented to the above specs, it should provide enough of a barrier to misuse while serving the goal of the site (allow arriving at the best possible answer).  P.S. This was obviously triggered by some of my own answers but once I realized the situation I observed it numerously with questions I was merely browsing.


I am a big fun of ubuntu.  I recently bought a tonbux tablet 10 inch with android.  I have tried to install ubuntu on it but I don't seem to be able to unlock the device, has anyone tried this before on a tonbux tablet?


Use selected item from Spinner in conditional Operation (if statement)

Please, I have two spinners. I am trying to get string values from spinnerA and then, to use these values as condition for display other values from spinnerB. I get these values from the database (mySql).  A part of the code is below. The syntax is correct (Android Studio doesn't show any error), but nothing happen when I run it on the emulator I mean, the Toast doesn't show.  Any idea of the issue OR of the simplest way to do that please ?  PS : the Toast here is just to check if the value is stored.  public class ReviewActivity extends AppCompatActivity {  Spinner sp1, sp2; TextView companyName; Toolbar toolbar;  ArrayList<String> trajets = new ArrayList<String>(); ArrayList<String> horaires = new ArrayList<String>();  ArrayAdapter<String> adapter1, adapter2;  @Override protected void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     setContentView(R.layout.activity_review);      sp1 = (Spinner) findViewById(R.id.spinner_trajet);     sp2 = (Spinner) findViewById(R.id.spinner_horaire);      adapter1=new ArrayAdapter<String>(this,R.layout.travel_spinner_layout,R.id.txt,trajets);     sp1.setAdapter(adapter1);      sp1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {         @Override         public void onItemSelected(AdapterView<?> parent, View arg1, int arg2, long arg3) {                String travel = sp1.getSelectedItem().toString();                if (travel == "NY - CA") {                     Toast.makeText(ReviewActivity.this, "Yaounde - Douala", Toast.LENGTH_LONG).show();                 } else if (travel == "CA - NY") {                     Toast.makeText(ReviewActivity.this, "Douala - Yaounde", Toast.LENGTH_LONG).show();                 }             }          @Override         public void onNothingSelected(AdapterView<?> arg0) {}      });


We know that gravity speeds up a body; for instance, a meteor which enters the earth gets constantly accelerated up by earth's gravity. And from relativity we know that light bends near a massive body, because Newton's law of gravitation is just an approximation and actually gravity depends on energy and momentum. So my question is: If a ray of light is aimed exactly at the center of a body, then will it get accelerated like a meteor? And if does get accelerated, then won't it surpass the universal speed limit of 3,00,000 km/s (approx.)?


How to show the permissions in numeric format?

I know that with "ls -l" I can see the permissions of a file or directory but it shows them with letters, so how to show the permissions in numeric way  for example:  755 /var/www/mywebpage


Why is there a file called [ in my /usr/bin directory?

Recently back to Linux from another operating system I noticed a file called [ which seems strange to me.  What is it for?  $ ls -l /usr/bin | head -2 -rwxr-xr-x 1 root root       39552 Nov  3 14:44 [   I'm using Ubuntu 15.04


Is the wave function of a particle re-created after a measurement stops?

Yeah, I haven't quite understood, or been told, what happens to, for example an electron and its wavefunction, when you stop to measure it.  I mean, an electron has a wave function describing its position and so on in the region of space it is confined. When I measure it, I get an output, and the wavefunction collapses - as far as I understand. But then, when I stop measuring, the electron has not been "destroyed" has it? So does it resume its original wavefunction, and continue as nothing has happened, or have I totally misunderstood something? :)


$\lim_{z\to \infty} \frac{f(z)}{z}=0$ what can we conclude about $f$?

Let $f$ be a entire function such that $$\lim_{z\to \infty} \frac{f(z)}{z}=0$$  What can we conclude about $f$.  Using the change of variable $w=1/z$ we can conclude $\lim_{w\to 0} f(1/w)w=0$ so at $w=0$ we have removable singularity so we conclude that $f$ has removable singularity at $z=\infty$  Now what should be my next step?


I'm trying to find a certain file for apache so I used the locate command to find it, however, when I go to the directory that locate says it is in, the file isn't there. Does anyone know why this might be? I've tried switching to the super user but it still doesn't show up. Thanks!


Is "Player" interchangeable with "Planeswalker"?

Cards the say target player, but say nothing about Planeswalkers such as those printed before Planeswalkers were a thing. Can i target a planeswalker in place of a player?


Cannot Create User Account Named 'Con' Under Windows 7

I'm unable to create an account named 'con' in Windows 7. I can create the account but each time I login, I see a notification that I'm working under a temporary profile and my files are wiped off after logging off. Any Advice/Suggestions on How to Fix?   post gave me a hint but is not focused on user accounts but files and folders.


What leads to the existence of critical temperature?

We know that $T_c$ is the temperature above which no amount of pressure could force a gas to liquefy. But why is this? Somehow I don't buy the point that the gas molecules exert too much pressure back to get close and turn into a liquid. If we had tens of thousands of atmosphere pressure (such as on the inside of hot planets), we should be able to liquefy any gas at any temperature.


How do I best take up carpet & remove glue from concrete floor

Would someone give a good list of the equipment, tools, supplies, etc., I would need to take up carpet and padding that is glued to the concrete floor.  Thank you.


Finding the roots of the unknown function

The graph of the function $f (x)$ is given.  How many different real roots does the $f (4-3x^2)=0$ equation have?  Here is possible solution:  $$\Bigg [{4-3x^2=-2 \\ 4-3x^2=4} \Longrightarrow x=\left\{0,\sqrt 2,- \sqrt 2\right\} $$  Then, here is different solution:  $$f(x)=x^2-2x-8$$ $$f(4-3x^2)=0\Longrightarrow (4-3x^2)^2-2(4-3x^2)-8=0 \Longrightarrow 9x^4-18x^2=0 \Longrightarrow x=\left\{0,\sqrt 2,- \sqrt 2\right\} $$   Problematic point. Here, I assumed the function is quadratic. But, obviously, this function may not be quadratic.  My questions:  Question $-1:$ Is the first solution completely correct?  Question $-2:$ Can we say that, the second solution is completely and definitely wrong? If so, is it possible to add something to this method and turn it into the right solution?


How to upgrade to a newer release of Ubuntu using the Live CD?

I've downloaded Ubuntu 13.10 daily CD and I want to upgrade all my computers using this Live CD (they all run Ubuntu 13.04 presently).  How can I upgrade to Ubuntu 13.10 exploiting the packages in the CD? Is there any standard procedure for this?  I tried this:   I rebooted into Live CD, searching for an option like "Upgrade from 13.04 to 13.10" (I think it used to appear in the alternate CD) but found nothing like that. -EDIT- Even if the option is not present it is possible to "mimic it" by entering manual partitioning and tell Ubuntu to reuse the existing partitions without formatting them. Ubuntu will keep user's data and install the updated software. Nevertheless this is not a viable solution because after the upgrade one has to reinstall all the programs he needs, since it is like having a vanilla Ubuntu. I booted into Ubuntu 13.04 and added the CD to my software sources. I then proceeded with the upgrade however the CD was never accessed and everything was downloaded from the web.   I know, I know... I have other options rather than using the Live CD, namely:   Forget the CD and setup apt-cacher in the LAN Copy the deb files from the CD into /var/cache/apt/archives/   But this looks unreasonable to me... Why can't I insert the CD and exploit its contents? I would like to avoid apt-cacher and if possible avoid also manually copying the packages.  Any idea on how to accomplish this?


Chapter ranges: chapters x-y or chapter x-y?

I am doing some proofreading using an in-house style guide and the Oxford Style Manual as references. However, I cannot find a convention regarding whether to use chapter or chapters when expressing something like:     see chapter 2-4   Am I not reading the Oxford Manual thoroughly enough? Is it just chapters? This seems obvious but I am unsure.


On my bike, which I just built out of spare parts, the left pedal seems to constantly be coming loose. It seems to come out about 5m every time I ride ~10km.  It's an old cotter pin crank, and the pedal is a left pedal (there's an L stamped into the end of the screw that goes into the crank). The pedal has a crack in one side of the axle compartment, but I don't think that would affect it.  I thought that these pedals had left-hand threads so that the action of pedalling would work to tighten the screw? If so, why would this be happening, and is there anything I can do about it short of replacing the crank and pedal?


I installed the latest version of Ubuntu (17.10) , but the problem is, I can't find the menu bars of applications in the GNOME panel. For instance, the Chrome menu bar doesn't appear on the panel like in Ubuntu 17.04 and earlier versions.


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

I am new to apex help me for this, what is the changes i need to do  public class MyCustomController{ Public Account acc; public MyCustomController(){ List<Account> lstAccount  = [select id,Name,Phone,Industry,Website,Active__c,Rating,BillingCity,Description,Fax, ShippingCity,AnnualRevenue,BillingCountry,ShippingCountry from Account where id=:ApexPages.currentPage().getParameters().get('Id')];  } public Account getAccount() { return acc; } public Pagereference saveMethod() { update acc; Pagereference pageRef = new ApexPages.StandardController(acc).view(); return pageRef; } }


When is Variance Statistically Significant?

This may seem like a rudimentary question relative to other posts, but how do I determine whether the variance is statistically significant?   For example, let's say I have a population of 10000. I have 5 doctors and have to determine how many times they correctly diagnose cancer per patient.   How would I go about finding the variance and determining statistical significance of the variance?  I am taking an intro stats course - please keep that in mind and be patient!  Thank you very much!


apt-get failed to install mongodb for Ubuntu 17.04 on arm platform (Odroid XU4)

I want to precise that this is not a duplicated issue.  I've been trying to install mongodb on my odroid XU4 (raspberry like), running on Ubuntu 17.04, using the command "sudo apt-get install -y mongodb"  Here's the output:  Reading package lists... Done Building dependency tree Reading state information... Done Package mongodb is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source  E: Package 'mongodb' has no installation candidate   Here's the output of sudo apt-get update  Hit:1 http://ports.ubuntu.com zesty InRelease Hit:2 http://ports.ubuntu.com zesty-backports InRelease Hit:3 http://ports.ubuntu.com zesty-proposed InRelease Hit:4 http://ppa.launchpad.net/random-stuff/ppa/ubuntu wily InRelease Hit:5 http://ppa.launchpad.net/ubuntu-desktop/ubuntu-make/ubuntu wily     InRelease Hit:6 http://ports.ubuntu.com zesty-security InRelease Hit:7 http://ports.ubuntu.com zesty-updates InRelease Hit:8 http://ppa.launchpad.net/ubuntu-x-swat/updates/ubuntu zesty InRelease Hit:9 http://ports.ubuntu.com/ubuntu-ports zesty InRelease Ign:10 http://repo.mongodb.com/apt/ubuntu xenial/mongodb-enterprise/3.4 InRelease Hit:11 http://repo.mongodb.com/apt/ubuntu xenial/mongodb-enterprise/3.4 Release Hit:12 https://dev2day.de/pms jessie InRelease Ign:13 https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 InRelease Hit:14 https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 Release Reading package lists... Done   Here's the output of uname -m  armv7l   Here's the output of dpkg --print-architecture  armhf   Here's the output of apt-cache policy mongodb mongodb-tools mongodb-org  mongodb:   Installed: (none)   Candidate: (none)   Version table: N: Unable to locate package mongodb-tools N: Unable to locate package mongodb-org   I've already done the following:  sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 2930ADAE8CAF5059EE73BB4B58712A2291FA4AD5 echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.6.list sudo apt update   I also tried instruction in the following post:  with the following result:  > sudo apt install mongodb-clients Reading package lists... Done Building dependency tree Reading state information... Done Package mongodb-clients is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source However the following packages replace it:   mongo-tools  E: Package 'mongodb-clients' has no installation candidate   I also tried:  > sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6 > echo "deb [ arch=amd64,arm64 ] http://repo.mongodb.com/apt/ubuntu xenial/mongodb-enterprise/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-enterprise.list > sudo apt-get update > sudo apt-get install -y mongodb-enterprise  Reading package lists... Done  Building dependency tree  Reading state information... Done  E: Unable to locate package mongodb-enterprise   And many other things found on internet, but I'm running out of ideas.. Does someone have a hint?  Thanks !


Using MMQGIS plugin through Python console?

I know how to make Hub Lines using the GUI, I want to know how to do the same using the Python Console, a tutorial would be great.


Installing another Python 3 version in parallel to the system one

I need to install Python 3.7 in order to run a library that requires it, but I don't want to replace my system's native Python 3 installation (which is an earlier version) as I'm afraid to break system dependencies.   How do I install it in parallel?


Every time on start up my pc sets a proxy which is https://127.0.0.1:86/

Going into this website makes you download a file which has this code in it. function FindProxyForURL(url, host) {  //Ver:1.0.0.4 if (shExpMatch(url, "*/recaptcha/*")) return "DIRECT";  if (shExpMatch(host, "cse.google.*")) return "PROXY 127.0.0.1:83";  if (shExpMatch(host, "www.google.*")) return "PROXY 127.0.0.1:83";  if (shExpMatch(host, "*search.yahoo.com")) return "PROXY 127.0.0.1:83";  if (shExpMatch(host, "www.bing.*")) return "PROXY 127.0.0.1:83";  if (shExpMatch(host, "www.ebay.*")) return "PROXY 127.0.0.1:83";  if (shExpMatch(host, "www.youtube.*")) return "PROXY 127.0.0.1:83";  if (shExpMatch(host, "www.amazon.*")) return "PROXY 127.0.0.1:83";  return "DIRECT";}  I have a short term solution to this problem which is running a .reg file which runs Windows Registry Editor Version 5.00   [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings] "ProxyEnable"=dword:00000000 "ProxyOverride"=- "ProxyServer"=-  [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings] "ProxyEnable"=dword:00000000 "ProxyOverride"=- "ProxyServer"=-  [HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Internet Settings] "ProxyEnable"=dword:00000000 "ProxyOverride"=- "ProxyServer"=-  [HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings] "ProxyEnable"=dword:00000000 "ProxyOverride"=- "ProxyServer"=-  [HKEY_USERS\S-1-5-18\Software\Microsoft\Windows\CurrentVersion\Internet Settings] "ProxyEnable"=dword:00000000 "ProxyOverride"=- "ProxyServer"=-  [HKEY_USERS\...\Software\Microsoft\Windows\CurrentVersion\Internet Settings] "ProxyEnable"=dword:00000000 "ProxyOverride"=- "ProxyServer"=-  [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\Internet Settings] "ProxySettingsPerUser"=dword:00000001  [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel] "Connection Settings"=dword:00000000  This is the only solution I found other than resetting my pc or running a full scan which sometimes could work. Does anyone know what this proxy can be used for?


Does each irreducible polynomial over the integers represent at least one prime?

There's not much more to the question: If $f(x) \in \mathbb{Z}[x]$ is an irreducible polynomial, is there a simple proof that there must be some $x$ for which $f(x)$ is a prime number (positive or negative, e.g. $f(x)=-13$ is OK here)?  By irreducible I mean to imply that $f(x)$ is not $0$ or a unit of $\mathbb{Z}[x],$ as some texts demand of an irreducible element. But to simplify things, just assume $f$ has degree at least $1$ [the degree 0 irreducibles being integer primes anyway, which do represent at least one prime].  UPDATE: Note that an example of Hurkyl's gives an irreducible $f$ not representing any primes. $f(x)=x^2+x+4.$ This was pointed out by Lucien in a comment, and that comment has a link to the question with Hurkyl's polynomial in an answer.


APEX Sharing stopped working in community

We had a small widget that allowed customers to share records that were set to a private sharing model in our community. Everything was rather simple and it would simply allow them to select users that were visible via Sharing Sets and create an __Share record in APEX.  I've been reported recently that an error is thrown but only on the community side of things. Nothing seems to be working where it was working. We are using    Customer Community Plus licenses.  The error being thrown is : System.TypeException: DML operation INSERT not allowed on <Object>__Share which seemed to indicate access not available on the object. That seems odd because they are able to interact with the object just fine in order to create/edit/delete them.  I looked up the Sharing Model (its private both internally and externally), I looked at the profile and their access and the sharing sets in the community. Like I said, they seem to interact fine with the objects when it comes to seeing the records and their right.  Additionally, standard license users can use the component fine and also share with community users without a problem. They also see the records as expected.  Am I missing an update or something that seem to make it so this doesn't work anymore? Anyone having trouble with this or encountered the same problem?


German language: use of comma in numbers

In German the comma rather than the period is used as a decimal separator and the dot is used as a thousands separator: 12.345,67. The comma creates some unwanted space when used as in $12.345,67$. Is there a light-weight package or some macro to support this? (I'm not looking for automatic formatting like insertion of a thousands separator.)  \documentclass{minimal} \usepackage[utf8]{inputenc}  \begin{document} Der Preis beträgt $12.345,67$ Euro.     \end{document}     An easy fix is typing $12.345,{}67$ but I think this is too cumbersome.


Is it possible to disable autorefresh in snap? This  says that Snaps are updated automatically in the background to the latest version, every day. Some snaps (e.g. vlc) are built daily, and it makes no sense to install them every day.


You are always complaining about me driving your car.    You are always complaining about I driving your car.   You are always complaining about my driving your car.


Sentence that needs correction:      Sensationalism in television shows masquerading as "news" programs are making it difficult for serious journalism to compete for ratings.   The correction should be sensationalism...is. I don't see how the use of are is incorrect. What's wrong with the sentence above?


In RSA, why is it important to choose e so that it is coprime to φ(n)?

When choosing the public exponent e, it is stressed that $e$ must be coprime to $\phi(n)$, i.e. $\gcd(\phi(n), e) = 1$.   I know that a common choice is to have $e = 3$ (which requires a good padding scheme) or $e=65537$, which is slower but safer.  I also know that for two primes $p,q$, we have $\phi(pq) = (p - 1) (q - 1)$  Now, let me give a (simple) example:  Say I choose $e = 3$, and two random primes $p = 5$ and $q = 13$.  I can now compute $\gcd(3, \phi(5 \cdot 13)) = 3$.  This reveals that $3$ and $\phi(n)$ are not coprime. I assume this could also happen for large values of $p$ and $q$, and likewise for another $e$. I therefore assume that the RSA algorithm must check that $\gcd(e, \phi(pq)) = 1$. But let's assume it doesn't.  How does RSA become vulnerable if $\gcd(e, \phi(pq)) \neq 1$?


Copy-paste functionality stops working after about an hour after each reboot on a Windows 7 64-bit system. Running Google Chrome (with gmail and few other tabs open like Calendar, Reader), MS Outlook (which I don't think has anything to do with the problem — I saw it when outlook was off as well), iTunes (9.1.1.12 if it matters).  Would appreciate hints where and what for to look in a registry, and ideas for possible fix.  That is not an Internet Explorer problem (I don't even run it) — it happens in all applications.  Neither Ctrl-C/Ctrl-V nor context menu right-click Copy-Paste (actually, nothing happens on Copy, so there is nothing in a clipboard to Paste) are working. Drag-and-Drop (where supported) continues working though.


What is the linguistic perception phenomenon when a person can read a word whose inner letters are rearranged?

What is this linguistic perception phenomenon called?     Aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteer be at the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe.     Is there a technical/academic term for it?


Moving trail of Particles forming rings when the emitter is constrained to "Follow Path"

EDIT: The answers found in this previously asked question didn't help:   I'm trying to use particles, which are moving along a path,by following an animated emitter. Basically it's supposed to look like sparks coming out of a firework's propeler.  PROBLEM My particles are forming rings/clusters while moving. They used to look random (as it should be) but it starts to form clusters when you constrain the emitter to "Follow Path".   Only way to not get clustering is by manually building the animation (not an option on the long run)


What is the effect of gravitational waves on time?

I always struggle with the time concept when it comes to general relativity. In the recent discovery the gravitational waves have been detected by the "displacement" of the mirrors and the difference that occurred between the "lengths" of the two arms. Which seems to me that it only dealt with the spatial parameters to see the ripples.  My question is that, we have seen that chirp from the spatial point of view, but what was the effect of the passage of such a "space-time" wave on our clocks? I mean, if we saw the distortion of the space, what change could we see in time?


What does "I have got some time on my hands" mean?

My shift at work's kinda long, so I've got some time on my hands to, you know...whatever. Think, I guess.   What does "I have got some time on my hands" mean in the above quote?


Simple question I'm having an annoying time with:  My main is set up as such:  int main(int argc, char *argv[]){     int i = (int) argv[1];    cout << "Inputted value: " << i << endl;    return 0; }   If I compile and execute with g++ main.cc -o main and main 5 I get a garbage result back on cout. How do I fix this casting issue?


How do I install an individual package on a Linux system?

I need to install a new TeX/LaTeX/ConTeXt package on my computer.  I'm running Ubuntu/Fedora/Slackware/Some-Version-Of Linux.  What are the possible ways to do this?    Note:   We get a number of questions that essentially reduce to this one; it was felt a good idea to have one question-and-answer that can cover all the standard methods.  See  for the discussion.  The question-and-answer are CW so that more information can be easily added.  If you have information to add, please do so.  If you are unsure, leave a comment here or (preferably) in .  Comments on the question and answer will be periodically removed to ensure that the information is clear.


Proof of a basic $AC_\omega$ equivalence

On  it is mentioned that "...  in order to prove that every accumulation point $x$ of a set $S\subseteq \mathbf R$ is the limit of some sequence of elements of $S\setminus \{x\}$, one uses (a weak form of) the axiom of countable choice. When formulated for accumulation points of arbitrary metric spaces, the statement becomes equivalent to $AC_\omega$. ..."  I have Herrlich's paper "Choice principles in elementary topology and analysis" where in theorem 2.4. it is stated that these are indeed equivalent. Then I looked up the reference he quotes, [4], which are Bentley H.L., Herrlich H., Countable choice and pseudometric spaces which does not contain the proof and  does also not contain the proof, hence my question:   Where can I see a proof of      "if $S$ is a set in a metric space $X$ with accumulation point $s$   then there exists a sequence $s_n$ in $S$ converging to $s$"   $\implies$ $AC_\omega$   ? (the other implication is clear to me). Thanks.


How does the domain name system know the authoritative nameserver for my domain name?

Note: Someone linked to  as a possible duplicate. But this link does not answer my question. Specifically, this link does not describe where exactly a regular domain name buyer like me (who has no DNS administration experience) sets the authoritative nameserver. All an inexperienced domain buyer like me does is set edit the DNS field for my domain in a reseller website like Godaddy or Namecheap and set it to customer nameservers like ns1.digitalocean.com, ns2.digitalocean.com, etc. The visible output I see after doing this is these nameservers appearing in the whois <mydomain> output. Is this equivalent to setting the authoritative nameserver as well, or is there something more to it?   Say I register a domain named example.com using any popular domain name registration service/reseller.  Say I have two Linux VMs hosted on two different cloud service provider's infrastructure.  Say I create DNS entries for example.com using the DNS Manager of both cloud service providers. On the first cloud, I point example.com to the IP address of the VM on the first cloud. On the second cloud, I point example.com to the IP address of the VM on the second cloud.  When an Internet user performs nslookup or dig on example.com which IP address would example.com resolve to for it?  As per HBruijn's comment below, it would resolve to the IP address in the record of the authoritative nameserver. So my question is where in this whole process of registering a domain name by an inexperienced user like me on a popular domain name reseller service do we specify the authoritative nameserver?  Is it the DNS field that resellers like Godaddy or Namecheap ask us to enter? I thought that DNS field only appears in the whois output. Does the reseller go and update the DNS too with the same nameservers as the authoritative nameservers?


grouping tables and horizontally showing?

I want to align my two tables horizontally.  Here's my tables.  \begin{table}[htbp] \centering \begin{tabular}{|c|c|c|} \hline     &   TS    &  AT \\\hline  1  &   3839    &   1341    \\\hline  2  &   3887    &   1323    \\\hline  3  &   3846    &   1345    \\\hline  4  &   4111    &   1424    \\\hline  5  &   3846    &   1359    \\\hline  6  &   4179    &   1512    \\\hline  7  &   3791    &   1395    \\\hline  8  &   3643    &   1242    \\\hline  9  &   3931    &   1427    \\\hline  10 &   3572    &   1329    \\\hline  Average    &   3864.5  &   1369.7 \\\hline \end{tabular} \caption{Example result of original}\label{tab:exorigin}  \begin{tabular}{|c|c|c|} \hline     &   TS    &  AT \\\hline  1  &   3839    &   1341    \\\hline  2  &   3887    &   1323    \\\hline  3  &   3846    &   1345    \\\hline  4  &   4111    &   1424    \\\hline  5  &   3846    &   1359    \\\hline  6  &   4179    &   1512    \\\hline  7  &   3791    &   1395    \\\hline  8  &   3643    &   1242    \\\hline  9  &   3931    &   1427    \\\hline  10 &   3572    &   1329    \\\hline  Average    &   3864.5  &   1369.7 \\\hline \end{tabular} \caption{Example result of mutant}\label{tab:exorigin2}  \end{table}   my table is now looks like this.    They are now 4.2 and 4.3 tables, but I want to make these 4.2a and 4.2b tables.  How can I put the tables horizontally?


First conditional with "would" instead of "will"

Consider the following sentence with a first conditional:          If it rains tomorrow, I will go to the cinema.      All the examples of first conditionals that I found use "will" instead of "would." Is it possible to replace "will" with "would" while retaining the same exact meaning, i.e.,          If it rains tomorrow, I would go to the cinema.      Or, would I have to put the inflected verb in preterite form (as mentioned in ), like this:          If it rained tomorrow, I would go to the cinema.      [Edit 1: I clarified that I want to retain the same meaning among these examples.]  [Edit 2: Corrected silly mistake where the first example was the same as the second example.]


If my post is clearly not a duplicate but users keep closing it as duplicate what am I supposed to do?

I've already edited it before posting to make sure it is not a duplicate and users are mistaking it as a duplicate because it has the phrase dark mode in it.   How am I supposed to make it clear that a relevant question that may have some similarity to an existing question, is not a duplicate?


What should I do when I have lenses with different filter thread sizes?

I want to get a filter kit for my D3200 camera. I am looking at a nice one, the only problem is, the thread size on my regular lens is different then my larger lens. Will it work for both of them? If one is 52mm and the other is 58mm so a total of 6mm difference between them.


Chrome address bar no longer shows protocol or www subdomain

A couple of days ago I noticed that for all websites, chrome omits from the address bar the protocol and the subdomain if it is www. My co-workers report that they are not seeing this. Chrome version is 67.0.3396.87.  For example, if I type into the address bar https://www.google.com (without the quotes), Chrome immediately displays the chip "Secure" followed by google.com. See attached screenshots.      I have looked in vain for Chrome settings that affect this, plus the chrome://flags page and chrome://net-internals page.  I did not do anything consciously to make this change.  Any ideas?  EDIT: Suggestion from MrWhite that Ominbox UI Hide Stead-State URL Scheme and Trivial Subdomains had become enabled: good suggestion, except that the setting is still at “Default.” See screenshot:    However, as a shot in the dark, I am going to play with the setting to see what happens.  First I set it to “Disabled.” That restored the previous behavior of the address bar, which is to not to hide the protocol and “trivial subdomains.” Then I changed it back to “Default,” and it was hiding them again. One would suspect that somehow the default has been changed, except that co-workers are not reporting this issue.  Oh, well. I’ll just leave it as Disabled for now.  I would be ready to accept the answer from MrWhite, because it provides a workaround. Yet will leave it open for a bit longer, because it does not really answer why this behavior has changed, and why it has to be overridden.  EDIT 2: Chrome version is 67.0.3396.87.