I am sure this is just something stupid. The main model doesn't render, just the eyes and the beard for some reason!


Can you drive in the US while you visit if you own a driver's license from your own country?if yes, for how long? I heard that you can for 6months.


What happens if I supply a higher voltage than the rated voltage of my jack?

I want to replace the original jack from my notebook with a new one since it is broken (and I would like to avoid to replace it with the same as the original). The original AC adapter supplies 19V and a bit less than 3Amp. However I can't find on Internet a DC jack (for pannel-mounting use) whose rated voltage is 19 V. All I find are 12V DC / 3Amp MAX jacks.  So what would happen if I use my AC Adapter with that new power DC jack (so 12V 3Amp) ? Will it overheat or is it safe?  Thanks (and sorry if that's a duplicate).


Homework Question  Hello, I have a simple homework question that asks:  We know that when we sample, with equal probability from a finite population {x1, x2,..., xN} without replacement, we obtain a simple random sample instead of an (iid) random sample. Let X1,...,Xn (n < N) be the sample obtained. It is claimed in class that X1,..., Xn, though no longer independent, are still identically distributed according to the pmf:  f(x) = 1/N, if x = xi, for some 1 <= i <= N;        0, for all other x.  The first choice X1 obviously follows this distribution. Show that the second choice X2 is distributed according to f(x) too.   My work: I did some research on exchangeable random variables. My thinking is that if I can show the sequence of random variables X1,..., Xn is exchangeable, then it follows that any of the Xi's can be the first random variable in the sequence. Therefore, each Xi will follow f(x).  My question: I am unsure if I properly understand what being exchangeable means. Also, I am not sure how you would properly prove that this sequence is exchangeable. I would really appreciate any tips on going about it.  Thank you.


admin@mac:/app/$ fetch=$(zsh -c 'zmodload zsh/datetime; strftime "%b %d %R" $((EPOCHSECONDS - 5*60))')  admin@mac:/app/$ echo $fetch Nov 21 08:22 admin@mac:/app/$ sed -n '/$fetch/,$p' test.log  admin@mac:/app/$(Not showing result)  My test.log input file below, Mon Nov 21 08:22 MYT 2020,Test 1  Mon Nov 21 08:22 MYT 2020,Test 2  Mon Nov 21 08:22 MYT 2020,Test 3


My touchpad scroll is not working in windows 10

I just shifted from windows 8.1 to windows 10. My touchpad scroll was working with windows 8.1 but not with windows 10. I'm not able to find the settings for touchpad in control panel they only give options for mouse.


Strategy for old technical questions having obsolete answers

I have seen a lot of old questions with great old answers which are up for new answers as technology has evolved.  One such example would be of answers on Android development. A lot has changed since 2010, but there are a lot of old answers to great old questions which needs update.  It's not that users who have answered those questions don't want to update, but it's not possible in case of most questions. This leads to many users with old answers which don’t apply to their current version of same technology.  Can there be a strategy to mark such questions and answers? I am not sure which strategy to be used, but this might certainly benefit our community and reduce duplicacy.


Strunk and White badge is telling me I have 76, the posts edited says 82, and revisions says 217 (I  that a lot of those are on my own posts and thus not counted)    But the suggestions say 95 (again some number will have been rejected.)    So I'm confused, what is the difference between the numbers counted towards the badge and stats? I'd guess I have 95 suggested edits but I either have 13 or 19 rejected edits, which sounds wrong. I can't think of what else would make the numbers differ.


Can I launch a graphical program on another user's desktop as root?

Following are other questions which I think I need to know:   From a non X Session? (meaning root isn't logged into X) If multiple people were logged in on X, could I auto-detect who was on which screen, and thus programmatically detect which screen I need to launch the app on? Can I launch the app as the user? ( ok I'm 99.999% sure this is a yes ) Can I detect if users of group X are logged in to X?


Allow linking (suggested) edits to one comment

As the feature-request  elaborates on, some suggested edits seem too radical without the context of comments they are based on.  I fully endorse this request and would like to take it one step further:  Add the option to "suggest* edit based on this comment" next to comments, which would specifically highlight that comment below the suggested edit, such that edits that otherwise would be deemed "too radical" at first sight can be put into a better context. On approval, said comment would also become linked-to by the revision comment.  Since it makes sense to upvote such a comment due to it providing information justifying an edit, that link could replace the flagging-flag (which is anyway hidden after an upvote) with the edit-pen that indicate edited comments, like so:        (mockup based on a  , coming to cinemas never)  In fact, for the editor's convenience, the clicked-on base-comment might also be added to the bottom of the post and preselected (e.g. for one-key deletion or conversion to a quote)    * The "suggest" would not be shown for users with the required edit privilege (<2k rep or OP), yet this option would allow to link an edit to a helpful comment and include aforementioned preselect-insertion of the comment at the post's bottom for convenience


The heat q we provide is change in enthalpy. Also we measure entropy by the heat we provide with respect to Temperature(S=Q/T). In gibbs equation, dG= dH-TdS dH is the energy we supply. Also TdS is also the energy we provide. This makes me think that dG=0. But why it is not?


Proof: For all integers $x$ and $y$, if $x^3+x = y^3+y$ then $x = y$

I need help proving the following statement:  For all integers $x$ and $y$, if $x^3+x = y^3+y$ then $x = y$  The statement is true, I just need to know the thought process, or a lead in the right direction. I think I might have to use a contradiction, but I don't know where to begin.  Any help would be much appreciated.


Are you less likely to down-vote someone whose gravatar is a photograph of them?

I know this is hard to answer since, to the extent that anyone does this, they likely don't do it consciously. In the spirit of Richard Wiseman and  I just wondered what were people's thoughts on it.  Please bear in mind that that's me in the picture, and if you down-vote this, that'll be a real person hurtin', not some abstract symbol.


How to create massive image mosaic/collage?

I am artist looking for advice for a project I am planning. I basically want to take around 20,000 images and stitch them together to form a large mosaic. However I don't want to create a larger image out of these small images, I want them to be randomly placed. I'm imagining each image will be reduced to about 4x4 mm and then printed out on a scroll of textile or material. The length of the scroll is the variable. Any advice?


how to build blender controller and pickers

Can someone point me to a tutorial on how to add controllers and pickers. I have the link to a youtube that I like to build.


dangers of using SHRINKFILE in sql server 2008

I'm trying to shrink the file size of a massive log file and was wondering how I estimate the size of the log file and what the dangers in running this are


Light speed in vacuum over space and time

Is the light speed the same, constant, in all the universe locations? I mean, is it he same in the surface of the Sun compared with speed in space inter galaxies?  Also: is light speed now the same as, let's say, half of the Universe life ago? (i.e. about 6500 million years ago)


Why do minus signs vanishes in listings typeset with matlab-prettifier?

I am typesetting my MATLAB code with package matlab-prettifier. However, the - sign are gone. How can I get it back?  MWE  \documentclass[12pt]{article}  % For MATLAB code \usepackage[framed]{matlab-prettifier} \usepackage[T1]{fontenc} \lstMakeShortInline[style=Matlab-editor]" % For inline shortcut  \usepackage{breqn}  \begin{document}  \begin{lstlisting}[style=Matlab-editor,basicstyle=\mlttfamily\footnotesize]  >> a(2, 3) ans =     1.6606e-04  \end{lstlisting}   \end{document}   Output    P.S.: I am aware of the existence of , but none of them works for me.


Is there any guideline on the plural form of loanwords from Japanese?

I just saw a trailer of 47 Ronin. My first thought was "that doesn't sound right". We have 12 Monkeys and 13 Warriors. Why 47 Ronin? Then I recalled that there is a movie titled Seven Samurai.  I checked the words ronin and samurai with Google, and found that the plural form of ronin can be either ronin or ronins. But the plural form of samurai is samurai.  Is there any guideline on the plural form(s) of loanwords in English, especially those from Japanese?


How do I prove group of order 15 is abelian?  Is there any general strategy to prove that a group of particular order(composite order) is abelian?


New name of a paper doesn't show up in Google

Around one month ago I changed the name of one paper of mine on ArXiv. I noticed that on google scholar it still appear with the old name and that if I search on google with the new name it does not find anything.  Is there a workaround to fix this problem?


Give a Bijection between $\mathbb{R}\setminus\mathbb{Z}$ and $\mathbb{R}\setminus\mathbb{N}$  I got a bijection between $\mathbb{N}$ and  $\mathbb{Z}$ Given by  $\phi(1)=0$  $\phi(2)=-1$  $\phi(3)=1$  $\phi(4)=-2$  $\phi(5)=2$  $\phi(6)=-3$  But I cannot figure how to find a bijection between $\mathbb{R}\setminus\mathbb{Z}$ and $\mathbb{R}\setminus\mathbb{N}$


Trying to determine the speed of a falling body with respect to traveled distance and initial speed. I've been provided with the following equation for acceleration as a function of distance and the grav. parameter(constant) of the attracting body :  $a=GM/r^2$      Where:  $a$ - acceleration. $GM$ - gravitational parameter(constant). $r$ - distance to the attracting body.  I have entered inputs for $GM$ and $r$ and integrated this equation with respect to $r$. This obviously yielded total acceleration per traveled distance, in other words $m^2/s^2$ at the given altitude.  How do I proceed to determine speed at this altitude?


function()() don't understand the extra parentheses.How does it get executed?

function times(x){       return function(y){         return function(z){           return  x*y*z;         }       };     }   A bit confused how does this exactly work? How does that function know that the next parentheses is the argument for the inside return function?  console.log(times(2)(5)(2))  // 20


Well, I usually say "twenny" instead of "twenty" (not "twendy" even). I recently noticed that I never heard the same from any native english speakers during any talks I ever had with them.  Recently I had a brief search on the 'net and it seems that it is somehow okay to say "twenny", but it might look the least correct pronunciation for most of the people, or they might think you have strange accent, etc.  So, my question is, is there any good reference which clearly proves saying "twenny" instead of "twenty" is totally correct or wrong?  P.S. You're most welcome to write your very personal opinion if you don't know any good references.  Update  I've already looked at the major dictionaries and didn't find any of them lists "twenny" in their pronunciation's section, however I'm sure that I didn't made that up, but I heard that while ago. Maybe in a movie, maybe from someone, and that's why I'm looking for the answer.


Why iTunes music can not play without Wi-Fi?

Previously, I was able to play music on iTunes without a Wi-Fi connection. Now, I get an error message and my music will not play. WHY?  How can I play my music through iTunes without a Wi-Fi connection?


Find all the intermediate fields of the splitting field of $x^4 - 2$ over $\mathbb{Q}$

Okay, so I mostly worked this out, and I even created lattice diagrams as shown below. But I have a specific question about finding intermediate fields, which I will ask shortly. Let $\alpha = \sqrt[4]{2}$ and $\omega = e^{\frac{\pi}{4}i} = i$.  Then $L = \mathbb{Q}(\alpha, i)$ is the splitting field of $x^4 -2$ over $\mathbb{Q}$. Also, the Galois group $\Gamma_\mathbb{Q}(x^4 - 2) = D_8$ acts on the roots $\alpha, \alpha i, -\alpha,$ and $-\alpha i$, and is generated by rotation $\sigma$ and reflection $\tau$, where $\sigma(i) = i, \sigma(\alpha) = \alpha i$ and $\tau(\alpha) = \alpha, \tau(i) = -i$. To find the intermediate fields between $L$ and $\mathbb{Q}$, find the subgroups of $D_8$ instead with the idea that finding subgroups is easier and better understood than finding intermediate fields. Then from the subgroups, use the Galois correspondence to get all the intermediate fields. There are 10 subgroups of $D_8$ which must correspond to 10 intermediate fields.  Well, I pieced together 8 obvious candidates for intermediate fields, and in the end, I had to look up the other 2 which were $\mathbb{Q}(\alpha(1 + i))$ and $\mathbb{Q}(\alpha(1 - i))$. Those two seemed strange until I realized that $\sqrt{8\alpha^2 i} = \alpha(1 + i)$. Finally, I was able to check fixed fields to verify the exact correspondence, and come up with the diagrams. Question: Is there a systematic approach to finding and connecting up the corresponding intermediate fields once all the subgroups are known? I'm guessing, in general and maybe in this example with $D_8$, there isn't a good, canonical way to anticipate and construct the field extensions?  The structure of groups and subgroups, as stated earlier, is easier and better understood than the structure of field extensions. Maybe this makes sense because the groups are finite and have only one operation, and fields are often infinite and have two operations.  and  UPDATE: In , Richard Borcherds clearly describes how to obtain the two nonobvious intermediate fields from the subgroups. Specifically, add the roots $\alpha$ and $\alpha i$ to fix by reflection one way, and then add the roots $\alpha$ and $-\alpha i$ to fix by reflection the other way.


A rotating ring on frictionless plane gets its centripetal force from?

A ring is rotating on a frictionless plane. From where does it get its centripetal force to keep on rotating?


Natbib-Multibib problem with prefix labels

I am facing a problem when using natbib together with multibib and label prefixes. I want to define two bibliographies: One for literature of other people, with numbered references, and one for my own literature, also with numbered references, but with a prefix "O" before each reference (the multibib labeled option). Without natbib (only using multibib), it works fine. But together with natbib, the "O" prefix vanishes in the text. In the bibliography, it is still there. I need to use natbib because the sort&compress feature.  Working minimal example:  \documentclass{scrbook}  \usepackage{filecontents} \begin{filecontents}{main.bib} @ARTICLE{travis,   author = {Brehm, M. and Kirchner, B.},   title = {TRAVIS - A free Analyzer and Visualizer for Monte Carlo and Molecular     Dynamics Trajectories},   journal = {J. Chem. Inf. Model.},   year = {2011},   volume = {51 (8)},   pages = {2007-2023},   owner = {Brehministrator},   timestamp = {2011.11.27} }, @ARTICLE{welton2001,   author = {L. Cammarata and S. G. Kazarian and P. A. Salter and T. Welton},   title = {Molecular states of water in room temperature ionic liquids},   journal = {Phys. Chem. Chem. Phys.},   year = {2001},   volume = {3},   pages = {5192-5200},   owner = {Brehministrator},   timestamp = {2011.12.11} } } \end{filecontents}  \usepackage[square, sort&compress, super, comma]{natbib}  \usepackage[labeled,resetlabels]{multibib}  \newcites{O}{Own Publications}  \begin{document} \chapter{Introduction}  Citing my own literature\citeO{travis}. Citing other people's literature\cite{welton2001}.  \appendix \bibliographystyle{plain} \bibliographystyleO{plain} \bibliography{main} \bibliographyO{main}  \end{document}   To compile this, you need to run bibtex separately on "main" and on "O".


Can someone explain to me in detail the solution to this answer? I am not 100% sure how Java ensures that this will not be done.   Q. What is the biggest difference between a parameter of a primitive type and a parameter of a class type?   The biggest difference is in how a method handles arguments that correspond to the different kinds of parameters. A method cannot change the value of a variable of a primitive type that is an argument to the method, nor can it replace an argument of a class type with another object. On the other hand, a method can change the values of an object of a class type whose name is an argument to the method.


i have a problem with this code, because in the RTL simulation, the output Cookie appears as StX. I don't know why this is happening since i don't know verilog well.   Can someone help me?   module dispenser( CLOCK, SReset,  SBCD, Cookie, valor, reciba  );   //Port declaration input CLOCK;  input SReset;  input [3:0] valor;  output reg reciba; output reg [3:0] SBCD; output reg Cookie = 0;      always @(*)         if( valor >= 4'b1000)            begin             Cookie = 1;               SBCD = valor - 4'b1000;              reciba = 1;            end         else            begin             Cookie = 0;             SBCD = valor;             reciba =0 ;             end endmodule   and this is my testbench  `timescale 1 ns/ 1 ns module vendingMachine_tst();     //Parameters     parameter TCK = 20; // clock period in ns     parameter CLK_FREQ = 1000000000 / TCK; // Frequenzy in HZ     //general purpose register     reg eachvec;       //Internal wire and reg declaration      reg [3:0] TB_Un_US;     reg [3:0] TB_Dos_US;     reg [3:0] TB_Cinco_US;     reg TB_Clock;       wire [3:0] TB_SBDC;     wire TB_Cookie;       vendingMachine vM1(        .Un_US(TB_Un_US),       .Dos_US(TB_Dos_US),       .Cinco_US(TB_Cinco_US),       .SBCD(TB_SBDC),       .Cookie(TB_Cookie),       .CLOCK(TB_Clock)      );   initial                                                 begin                                                   // code that executes only once                         // insert code here --> begin      TB_Clock <= 0;                          // --> end                                              $display("Running testbench");                        end                                                     always                                                  // optional sensitivity list                            // @(event1 or event2 or .... eventn)                      #(TCK/2) TB_Clock <= ~ TB_Clock;  initial begin                                                   // code executes for every event on sensitivity list     //Caso 1: El cliente entrega justo el precio de la galleta      #0     TB_Un_US <= 4'b0001;    #6000  TB_Dos_US <= 4'b0010;     #60000 TB_Cinco_US <= 4'b0101;   //El cliente supera el precio de la galleta   // #0   TB_Un_US <= 4'b0001; //  #60   TB_Un_US <= 4'b0001; //  #600  TB_Cinco_US <= 4'b0101; //  #6000 TB_Dos_US <= 4'b0010; // // ////El cliente no completa el precio de la galleta  // //   #0   TB_Dos_US <= 4'b0010; //  #6000  TB_Un_US <= 4'b0001; //  #600000 TB_Un_US <= 4'b0001;       #(TCK*300000) $finish ; #(TCK*300000) $finish ;        @eachvec;                                                     // --> end                                              end                                                     endmodule


How do I send SMS from PC through Android Phone or to Android Phone?

I'm looking for an app that will let me type text messages on my PC and send the SMSs directly from the PC through my phone, or save the messages to the phone for later use.  I'm basically looking at something like Nokia PC Suite's equivalent.  EDIT:  Google Voice is only for US, doesn't work in India at least, and also defeats the purpose (it will go through the internet, why, when it's possible through the usb cable/modem/wifi). DesktopSMS is a good program, but kept crashing, for some reason. PDANet worked for me. But I liked the tiny . It's weird, and I had to change the bluecove library jar file for Windows 7 x64, but it's compact (a concern for me).


Isn't magnetism governed by the inverse square law?

Why does magnetism appear to decay much faster than gravity with distance?  A clear indication of this is the fact that a magnet that in short distance able to overcome gravity and pick up some object, is quickly overpowered by gravity as any short distance is put between the magnet and said object.  Gravity, as we all know, is governed by the inverse square law. Shouldn't they both decay at the same rate?


Python: How to remove duplicate values for one key inside a dictionary?

I have a dictionary with duplicate values for one key. How could I remove the duplicates?  Initial dictionary:   dict = {"a": [1, 1, 1, 2, 1, 3, 2, 3, 1], "b": [4, 5, 2, 1, 1, 5, 6, 2, 5]}   Desired dictionary:   dict = {"a": [1, 2, 3], "b": [4, 5, 2, 1, 6]}


Graphics Memory: 4 GB Graphic Processor: NVIDIA GeForce GTX 940MX Processor: Intel Core i7-7500U (7th Gen) Game is loading from HDD   I have fairly recently bought the Dell 7560 with the aforementioned specifications. I have bought an original copy of GTA V. And I have installed and kept updated the GeForce Game Ready Driver.  However, I am facing a lot of lag and a very bad experience while playing the game even with minimum settings. This is just frustrating. Just loading the game fires up the fans as if I am launching Falcon Heavy.  The game is installed on my hard drive.  My question is, are there any software which I should install to optimise my gaming experience?  How do I enhance my gaming experience? Any tips? Thanks


How to set classpath for multiple jars in command line?

In this jars folder, I am having multiple jars. How to set classpath to all of these jars?  C:/users/jars/***


study the convergence of $\sum_{n=1}^\infty \log \frac{n+1}{n}$

$\sum_{n=1}^\infty \log \frac{n+1}{n}$  $\sum_{n=1}^\infty \log \frac{n+1}{n}$ =  $\displaystyle\lim_{n \to{+}\infty}(\log2 - \log1)+(\log3-\log2)+...+(\log(n+1)-\log n)$=$\displaystyle\lim_{n \to{+}\infty}\log(n+1)\to \infty$. So, the series diverges.  Is my procedure correct?


Question: I wanted to do dist-upgrade on my server this morning. What I got is this:  apt-get dist-upgrade Reading package lists... Done Building dependency tree        Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies:  linux-image-extra-3.5.0-32-generic : Depends: linux-image-3.5.0-32-generic but it is not installed  linux-image-generic : Depends: linux-image-3.5.0-32-generic but it is not installed E: Unmet dependencies. Try using -f.   After that I tried to install linux-image-3.5.0-32-generic, and this is what happened:  apt-get install linux-image-3.5.0-32-generic Reading package lists... Done Building dependency tree        Reading state information... Done The following packages were automatically installed and are no longer required:   linux-headers-3.5.0-22 linux-headers-3.5.0-22-generic linux-headers-3.5.0-23   linux-headers-3.5.0-23-generic linux-headers-3.5.0-25   linux-headers-3.5.0-25-generic linux-headers-3.5.0-26   linux-headers-3.5.0-26-generic linux-headers-3.5.0-27   linux-headers-3.5.0-27-generic linux-headers-3.5.0-28   linux-headers-3.5.0-28-generic linux-headers-3.5.0-30   linux-headers-3.5.0-30-generic Use 'apt-get autoremove' to remove them. Suggested packages:   fdutils linux-doc-3.5.0 linux-source-3.5.0 linux-tools The following NEW packages will be installed:   linux-image-3.5.0-32-generic 0 upgraded, 1 newly installed, 0 to remove and 16 not upgraded. 8 not fully installed or removed. Need to get 12.0 MB of archives. After this operation, 32.7 MB of additional disk space will be used. Get:1 http://ch.archive.ubuntu.com/ubuntu/ quantal-updates/main linux-image-3.5.0-32-generic amd64 3.5.0-32.53 [12.0 MB] Fetched 12.0 MB in 5s (2,307 kB/s)                        (Reading database ... 316189 files and directories currently installed.) Unpacking linux-image-3.5.0-32-generic (from .../linux-image-3.5.0-32-generic_3.5.0-32.53_amd64.deb) ... Done. dpkg: error processing /var/cache/apt/archives/linux-image-3.5.0-32-generic_3.5.0-32.53_amd64.deb (--unpack):  cannot copy extracted data for './boot/System.map-3.5.0-32-generic' to '/boot/System.map-3.5.0-32-generic.dpkg-new': failed to write (No space left on device) No apport report written because the error message indicates a disk full error                                                                               dpkg-deb: error: subprocess paste was killed by signal (Broken pipe) Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.5.0-32-generic /boot/vmlinuz-3.5.0-32-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.5.0-32-generic /boot/vmlinuz-3.5.0-32-generic Errors were encountered while processing:  /var/cache/apt/archives/linux-image-3.5.0-32-generic_3.5.0-32.53_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) root@zotac:~#    I have 250 GB of space left, but the boot partition is 95% full.  But now I cannot use apt-get anymore, because it's stuck with that package it can't install.  Also, apt-get autoremove and apt-get clean don't help.  How can I reset apt so this error is gone ? So I can remove the old linux-images and install the new one ?


What would be the ideals of the real numbers?  I have to figure out the ideals of a ring R, which is a product of integers and reals like so:  $R = \mathbb{Z}\times \mathbb{R} \times \mathbb{Z}$  Are the ideals simply 0 and $\mathbb{R}$?


I have tried some solutions from the internet but still not working. I have tried to open it in terminal and I get this:  12:43:40:0155 Gtk Failed to load module "canberra-gtk-module" 12:43:40:0157 Gtk Failed to load module "canberra-gtk-module" 12:43:40:0217 Gs  enabled plugins: desktop-categories, fwupd, os-release, packagekit, packagekit-local, packagekit-offline, packagekit-proxy, packagekit-refine-repos, packagekit-refresh, packagekit-upgrade, packagekit-url-to-app, appstream, desktop-menu-path, hardcoded-blacklist, hardcoded-popular, modalias, odrs, packagekit-refine, rewrite-resource, packagekit-history, provenance, snap, systemd-updates, generic-updates, provenance-license, icons, key-colors, key-colors-metadata 12:43:40:0217 Gs  disabled plugins: dpkg, dummy, fedora-langpacks, fedora-pkgdb-collections, repos 12:43:40:0375 Gs  /etc/PackageKit/Vendor.conf file not found 12:43:40:0847 Gtk Could not load a pixbuf from icon theme. This may indicate that pixbuf loaders or the mime database could not be found. ** Gtk:ERROR:../gtk/gtkiconhelper.c:494:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /snap/snap-store/433/data-dir/icons/Yaru/16x16/status/image-missing.png: Unrecognized image file format (gdk-pixbuf-error-quark, 3) Bail out! Gtk:ERROR:../gtk/gtkiconhelper.c:494:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /snap/snap-store/433/data-dir/icons/Yaru/16x16/status/image-missing.png: Unrecognized image file format (gdk-pixbuf-error-quark, 3) Aborted (core dumped)   How can I fix this? I am using Ubuntu 20.04LTS.


Bibliography in LaTeX with Biblatex and Biber as backend

I am not able to create a bibliography with biblatex and can't figure out what the problem might be. Below are the steps I have taken which I thought would work. What am I doing wrong?   I am using:   MiKTeX 2.9 TeXnicCenter 2.0 Beta 1 (64 bit) JabRef 2.10  I  and copied manually biber.exe to my MiKTeX directory:   this step was advised  C:\Program Files\MiKTeX 2.9\miktex\bin\x64\biber.exe  I created a new project in TeXnixCenter and a reference.bib file in JabRef (both in utf-8):   LaTeX   \documentclass{article} \usepackage[backend=biber]{biblatex} \addbibresource{reference.bib}  \begin{document} \cite{ref1} \printbibliography  \end{document}   Bib-File   % This file was created with JabRef 2.10. % Encoding: UTF8   @Article{ref1,   Title                    = {Title},   Author                   = {Phil},   Journaltitle             = {Journal},   Year                     = {2014},    Owner                    = {Phil},   Timestamp                = {2014.05.03} }    I set up the output profile in TeXnicCenter:  I compiled several times in order to create the  document but I only recived these warnings:   ...    ...


Why show an audit review answer if my review filter excludes answers?

I was performing some First Posts reviews on an SE site that has audit reviews enabled. And I had enabled the filter to limit it to Questions only (I wanted to skip all Answers to be reviewed). However, one of the posts to be reviewed was , about an answer! Why show an answer as audit review if my review filter excludes answers? That makes no sense to me (instead such audit review should have been about some question, not an answer) and smells like a bug. Or am I missing something?


PHP validation only number and number with comma

I'm trying to make validation number with format x or x.xx (4 or 4.21). The format I managed to use regex for the x (single digit) is \ b \ d \ b. For x.xx format (two decimal places) I haven't found the regex pattern yet $tes = 1; if(!preg_match('\b\d\b', $tes)){     echo 'right format';  }else{     echo 'not right';  }


mysql -> insert into tbl (select from another table) and some default values

As the title says, I am trying to insert into one table selecting values from another table and some default values.   INSERT INTO def (catid, title, page, publish)  (SELECT catid, title from abc),'page','yes')   INSERT INTO def (catid, title, page, publish)  VALUES ((SELECT catid, title from abc),'page','yes'))   The first query gives a mysql error and the second one gives column count does not match.   What do I need to do?


I was going through  (possibly 10k link), when I came up on this:        The  itself only lists KasiyA, Alvar and Eric Carvalho.  So what's going on here? An audit gone serious?


confuse PassByReference and PassByValue in java method

I have two classes. The first class call to call method(with parameter) that is inside in second class. I want to know when parameter pass , it copy to  MyClass ref or it pass by reference.   public class NewClass  {     public static void main(String[] args)     {         MyClass obj = new MyClass();         obj.val = 1;         obj.call(obj);         System.out.println(obj.val);     } }   public class MyClass  {     public int val;     public void call(MyClass ref)     {         ref.val++;     } }   The output is 2. My understanding is it is pass by refernece. Please confirm my answer. Thank you very much.


How to read Fireworks PNG layers without Fireworks

I can't seem to find a program that can read the extra data in Fireworks png files. Other programs like gimp will only give me the flattened version without layers.  Does anyone know of a program?  I would download a trial of Fireworks but that section of adobe's website is "experiencing difficulties".


I attacked someone that is prone. So I attack with advantage plus sneak attack. Then in his turn he leaves my space which grants me an opportunity attack.  Here's my question: does that opportunity attack grant me another sneak attack? Assuming he is in front of my ally too so he is distracted and he did not disengage.


Writing a non symmetrical function as an even or odd function

I have been given the task to rewrite a function as a sum of an even and an odd function. But when I went to analyze the parts of the original function I noticed that one part was neither even nor odd.   The original function was: $g(x) = (x + 1) / (x^2 - 3x + 4$)  After analyzing I realized that when using f(-x) to determine symmetry it produced a 'neither' result. How would I go about writing a function that is neither even nor odd as an even function. (It would have to be an even function as the (x+1) part of the original function is odd and since I need to write it as a sum of even and odd, the denominator would need to be even.


Why did MS originally make the decision to maintain these two separate core libs? Maybe they had some scalability issue in mind, but nowadays I never see an application, of any type, that doesn't need both. Does anyone have any inside information on this? It's not really important, but been on my mind for years.  PS. I know what's in the two libs, I know the difference - I'm a big fan of  :) Just wondering what practical use the separation of the two has.


How long will a truncate table take on 252M Rows (170GB data)?

I understand that there are many variables in this and am not looking for an exact number of min:sec :) I've read many resources that state that a TRUNCATE uses far less resources than a DELETE and hence will perform faster. But there are no order of magnitudes mentioned. As a TRUNCATE is a DDL (Data Definition Language) operation and not a DML (Data Manipulation Language) operation and only the system tables are part of the transaction, I'm presuming that it should not take very long.   Anyone with experience on doing this with a table anywhere near this size that can lend some insight? We talking up to a minute, up to an hour, days, weeks?


Latex create a second keywordstyle using listing doesn't work

I need to insert some code in my latex document, using listings. I create my own set, for a java language  \lstset{ language=Java, aboveskip=3mm, belowskip=3mm, showstringspaces=false, columns=flexible, basicstyle={\small}, numbers=none, numberstyle=\tiny\color{gray}, morekeywords=[1]{@}, keywordstyle=[1]\color{red}, keywordstyle={[2]\color{red}}, keywordstyle=\bfseries\color{purple!40!black}, otherkeywords={String,async,await,Task,var}, keywords=[2]{DatabaseField,DatabaseTable}, commentstyle=\color{ForestGreen}, stringstyle=\color{mauve}, captionpos=b,                    % sets the caption-position to bottom breaklines=true, breakatwhitespace=true, tabsize=3}   As you can see, I've tryed many solution founded online, but neither of this is working for me.  I know that the correct syntax should be :  keywords=[<number>]{<list of keywords>} keywordstyle={[<number>]<style commands>}   But, is not working, also the bold text in my "normal" keywordstyle is ignored, where's my mistake?


Add Redo/Undo Buttons for use in tablet mode

I have a 2 in 1 laptop that allows me to use the touchscreen for painting with a stylus. The biggest pain I have right now is that whenever I'm in tablet mode I don't have access to the keyboard for Undo/Redo operations besides using the menu for edit > Undo. What I'm looking for is something like Artistpad from Tablet pro which has the feature I'm looking for, however it stands separate from blender, takes up a large part of the screen, and is too expensive for how little of the features ill be using. See picture below for example. Is there some sort of history browser, custom toolbar or gizmo maker that I can use within blender to add a button onto the viewport to let me undo/redo? Would this be possible via scripting?


texlive installation aborted after hours of installation; restarting without duplication

I'm trying to install texlive.  I proceeded in the recommended way, as per   After hours since initiating the download with install-tl as per instructions in . Hours after intiating the install-tl command, the installation aborted with the following error message:  Installing [2507/3271, time/total: 03:01:18/03:46:09]: rec-thy [221k] TLUtils::check_file: removing /tmp/bgLBEx3xxA/o1ankpQviV/rec-thy.tar.xz, sizes differ: TLUtils::check_file:   TL=0, arg=7428 TLPDB::_install_package: downloading did not succeed Installation failed. Rerunning the installer will try to restart the installation. Or you can restart by running the installer with:   install-tl --profile installation.profile [EXTRA-ARGS] install-tl: Writing log in current directory: /usr/local/src/install-tl-20160728/install-tl.log   I have no idea how to implement the crypic instruction  install-tl --profile installation.profile [EXTRA-ARGS]   because I can't find any information as what the EXTRA-ARGS should be, and google provided no help.    So I started again with   install-tl   hoping it would be smart enough not to start from scratch, but it wasn't, and did start from scratch, meaning another 3 hours.     This time it crashed after a few minutes, with   Installing [0051/3271, time/total: 04:08/04:30:47]: ae [84k] TLUtils::check_file: removing /tmp/ZLEUeUk8LV/ps7iOTjRWq/ae.tar.xz, sizes differ: TLUtils::check_file:   TL=43160, arg=57364 TLPDB::_install_package: downloading did not succeed Installation failed. Rerunning the installer will try to restart the installation. Or you can restart by running the installer with:   install-tl --profile installation.profile [EXTRA-ARGS] install-tl: Writing log in current directory: /usr/local/src/install-tl-20160728/install-tl.log   Why would the installation crash at different places?  Could somebody please interpret these crashes and how to prevent them?   If the installation crashes again, is there a way of picking up where I left off?   (presumably using the mysterious EXTRA-ARGS?).  If all else fails, is there another way of getting a less complete latex installation that will actually work?    Thanks very much for any advice?


Turn off suggestions to upgrade to Windows 10

How do I get my Windows 7 system tray to stop showing the Windows 10 upgrade symbol after every restart?  Here's what it looks like:    At every restart, I have to manually go in and set it to "Hide."


I want to create a mesh that looks like this sheep:     How could I go about achieving a look like this(I'm talking specifically about the puffy body of the sheep)? I tried using multiple spheres together and using a single sphere and sculpting it with the blob brush, but neither really got the look I wanted. I want it to look cartoon like in the picture, so I don't need realistic fur or anything like that. Any tips?   My blob brush monstrosity:


I'm a bit confused about this. I have a model with multiple variables trying to explain the dependent variable. When I use the F test, I don't pass the critical value. But when I seperate the different variables and use the t-test, I do pass the critical value on 2 of the 3 variables. How is this possible? I thought the F test was to be used as a indicator: is any of the variables relevant.  And I thought the t-test was to determine which one was relevant.


What exactly does this sentence mean: " ... typically 10-100 times that of a plain-vanilla email campaign"

"That extra effort is what gives traditional media its added oomph—typically 10-100 times that of a plain-vanilla email campaign"   This sentence is used in below paragraph:          They work because, to your prospect, it's a given that you've put in more effort. (A printed sales pack costs you more to put together; a telephone call takes 100% of one person's attention for its duration.) That extra effort is what gives traditional media its added oomph—typically 10-100 times that of a plain-vanilla email campaign.      I think that it means: extra effort can make the media more appealing. But the next part of the sentence is ambiguous  for me:    typically 10-100 times that of a plain-vanilla email campaign


Range of function Involving Modulus Quantity.

If $x,y,z\in \mathbb{R}\;,$ Then Range of $$\frac{|x+y|}{|x|+|y|}+\frac{|y+z|}{|y|+|z|}+\frac{|z+x|}{|z|+|x|}\,$$    $\bf{My\; Try::}$ Here $x,y,z$ Not all Zero Simultaneously.   Now Using $\bf{\triangle\;  Inequality}\;,$ We get $|x+y|\leq |x|+|y|$  Similarly $|y+z|\leq |y|+|z|$ and $|z+x|\leq |z|+|x|$  So we get $$\frac{|x+y|}{|x|+|y|}+\frac{|y+z|}{|y|+|z|}+\frac{|z+x|}{|z|+|x|}\leq 3$$  Now I did not understand How can I calculate $\min$ of that expression, Help Required  Thanks


If every element of set A ia an element of set B then we say that A is subset of B. A is said to be proper subset if A does not equal B.  My question is - whether the symbol we use to show subset is  same as that for proper subset? I have seen that A is subset of A itself is shown by the same symbol as that for the subset while when we write improper subset, we usually write equal to sign with symbol of subset. So, please help me to know this.


Stop Windows 7 from forcefully shutting itself down when waiting to update

I have had this happen to me twice now.  I'll be in the middle of working on something that has resulted in me not rebooting my machine for several days.  If Windows 7 is waiting to install updates it'll eventually get to a point where it forces a restart to install the updates.  The problem is that it doesn't notify me or tell me that its going to do this and I've lost work as a result and most recently had a VM become corrupt and unusable.  Is there a way to at least get it to prompt me before doing this?  It used to...


Kernel of the ring homomorphism $\phi\colon\mathbb{C}[x, y, z]\to\mathbb{C}[t]$ defined by $\phi(x) = t$, $\phi(y) = t^2$, $\phi(z) = t^3$

Describe the kernel of the ring homomorphism $\phi\colon \mathbb{C}[x, y, z]\to \mathbb{C}[t]$ defined by $\phi(x) = t$, $\phi(y) = t^2$, $\phi(z) = t^3$.   Some hints?   I know $\ker\phi = \{ a \in\mathbb{C}[x, y, z] \mid \phi(a) = 0\}$ is closed under addition and multiplication. Also, it is an ideal of $\mathbb{C}[x, y, z]$.  Using egreg hint, I came up with   $\ker \phi$ ={$ (x^2 -y)r_1 + (xy-z)r_2 + (x^3-z)r_3 | r_1,r_2, r_3 \in\mathbb{C}[x, y, z] $} ? I am not sure if this is right.


I have a large google document I'm working on. There is the same text there that used in many places. It is changed sometimes as the document evolves. I'd like to have some way to change it automatically. I declare a variable some_variable in some document metadata layer with the value of "text". Then everywhere this variable is inserted as ${some_variable} it will be automatically replaced with "text". In this case I won't have to go over and do it manually. I believe this feature is available in MS-Word. Is it possible to do the same in google-docs.  I've tried  plug-in. However, it seem to be able to only replace variables with values once.


Approach to solve conditional probability

I am currently working on an exercise, and I am not sure whether I am using a right approach to solve it. The exercise is the following:  After masks are produced by the factory, they appear in a test center, where they are tested for defects. Historically, only $10\%$ of masks get a positive test result (meaning they are defective). Let $T_1=$ number of masks tested until first positive result, $T_2=$ number of masks tested until second positive result. Find $\mathbf{P}(T_2-T_1=k \mid T_1=n)$ and $\mathbf{E}[T_2 \mid T_1=n]$.  Would it be correct to use those formulas: $$\mathbf{P}(X=x \mid Y=y)=(\mathbf{P}(X=x \text{ and  } Y=y))/\mathbf{P}(Y=y)$$ and $$\mathbf{E}(X \mid Y=y)=\sum x\mathbf{P}(X=x\mid Y=y)?$$


I want to understand why this for doesn't stop its execution to 10. See the code:  #include <stdio.h>  int main() {   float i;   for (i = 0.0; i <= 10; i += 0.01)     printf("Iteration %g\n", i);    return 0; }   The latest iterations are:     Iteration 9.96013   Iteration 9.97013   Iteration 9.98013   Iteration 9.99013   Why this behaviour ?


Why does C# disallow readonly local variables?

Having a friendly debate with a co-worker about this.  We have some thoughts about this, but wondering what the SO crowd thinks about this?


Traveling between US and Canada with expired US passport but valid EU passport

I need to travel to Canada from the US ASAP but my US passport is expired. I do have a valid EU passport.  Will I be able to get in and out of the country no problem?


How to simplify $\sum_{i=1}^{k}\binom{n + i - 1}{i}$? I tried reducing the sum to $\binom{n}{1}, \binom{n}{2}, \binom{n}{3}$ and so on but couldn't get a pattern.


Is this dimmer compatible a DC 12v power supply?

This power supply is used for LED strip lights I recently purchased. I want to know if the dimmer below can be used with the power supply. The PS is AC 100-240v (IN) to DC 12v (OUT), while the dimmer is DC 12-24v (IN/OUT), based on my intuition, this should work.


I cannot find a way to assign-view the material I chose for a predefined stair.   This is what I have


Proving that both $F_\sigma $ and $G_\delta$ sets are $\sigma $-algebras

I am trying an exercise of an assignment which asks to prove that both $F_\sigma $ and $G_ \delta $ sets are $ \sigma $-algebras.   Proving X belongs to $ F_\sigma $ and  $G_\delta $  and that countable union property is easy in case of $ F_\sigma $ sets . Can someone please tell how to prove  countable union property in case of  $ G_\delta $ and the property $2$ that if $A$ belongs to $S$ , then  $A$-complement also belongs to $S$ in both cases.


I'm transitioning a Drupal 6 site to Drupal 8.1 so following the official instructions, I set up a new install in its own directory. Since this is only one site, I followed the instructions to put my database credentials in sites/default/default.settings.php after the declaration of the $databases array.  Running drush --status returns the following.  Drush version          :  8.1-dev                                           Drush temp directory   :  /tmp                                              Drush configuration    :                                                    Drush alias files      :                                                    Drupal root            :  /media/psf/Home/apps/newp                         Drupal Settings File   :  MISSING   Since this Drupal is 8.1-dev that must mean I need to upgrade it. Since this is a global install using Composer, I run composer global update.     Your requirements could not be resolved to an installable set of   packages drush/drush dev-master requires codegyre/robo ~1.0.0-beta1   Checking the drush-ops page on github doesn't show any anomalies like this nor my Google search.   What am I overlooking?


What are some simple ways to reduce Arduino power usage?

For a quick and dirty project, what are some of the simplest ways to reduce the power use of an Arduino?  Imagine the following setup:   A typical Arduino Nano, hooked up to a pair of DS18B20s and one of the mini OLED screens. Power comes from a cellphone battery hooked to a TP4056 board, which then runs to a small 0.9V >> 5V boost board, both common eBay items.  The idea is to make a basic platform, to which additional functionality will be slowly added, such as a wireless link and data-logging. For now, though, the situation is as described above.  The obvious start would no doubt be killing off unnecessary LEDS , or at least, tacking on extra resistance to make them fainter. Maybe finding how to reduce the brightness of the OLED screen would also be an obvious step, and that green LED next to the ON switch isn't necessary...   But beyond this, what simple steps could be done in coding or hardware load-out could help get more battery time?  (This question relates to a specific level of embedded system enthusiast, namely, the intermediate level, someone who isn't yet confident enough to dive into the depths of the AVR assembly language, but rather someone who already grasps the basics of how electronics and embedded devices are put together in a system (In other words, myself..). There are differences compared to the  question, and more specific to the actions I practically can take.)


Precautions while redesigning site appearing in google search first page

One of our clients site need to be re-designed. The updates would be mostly presentational including graphics, page layout updates (re-order page elements), color, icons, fonts, making it responsive etc. There will be minor content updates, mostly correcting old data and add some new.  Currently site pages appear on Google search first page for key business phrases/words.  What precautions should be taken while re-designing website without affecting the search ranking?


Background:  I recently began taking calculus and it has come to alter the way I look at circles, and curves.  The equation of a circle is $\pi r^2$, traditionally in school we have always left the answer in terms of pi (i.e.) if the radius $r=2$ then the area $A = 4\pi$.    Question:  If one were to attempt to write the area of a circle in decimal form (i.e.) if the radius=2 then the area $A = 4\pi$, but $\pi$ doesn't have an end, it has (per what I have learned in school) an infinite number of decimal places so it is $3.14159\ldots$ therefore if one multiplied $4\cdot 3.14159\ldots$ one would have to approximate ones answer.    Does that mean that it is impossible to calculate the exact (without approximation) area of a circle?  Thanks for any responses,  Joel


How do you detect if somebody is on a certain y coordinate in Minecraft Bedrock?

So, I am making a safe house in Minecraft, and I want to make it so if you go to y=10, you get weakness 5, or at least it detects that you are a y 10 so I can add a second command block that gives you weakness. I did commands like /testfor @a [y=10], but it completely ignores the [y=10] part. Please help! (Edit, I figured it out, but I still need help making it not only just work for the x and y coords of the command block, so it can detect your y pos anywhere.)


How to access hard-drive from Ubuntu in VirtualBox

recently i installed windows7 on oracle VM virtualbox but I can't get files from my hard drive to the OS installed in VirtualBox.  Is there any way to access files of my hard in VirtualBox?


How to create a cross-platform traveler disk with TrueCrypt

I need to create a file-based TrueCrypt volume in a 32GB USB pendrive. If I wanted to access my files in offline computers, I'd need to include the TrueCrypt executable in the pendrive as well. I'd like to create a multiplatform disk with all the files required to access my encrypted file-based drive from Windows, Linux, and MAC.  TrueCrypt already has an option for this: Options > Traveler Disk Setup (see ). It copies the executable portable app in the (unencrypted) drive, and has an option for including autorun.info files to automate mounting. In linux and MAC versions of TrueCrypt this option is not available I think, but the app can be run in "portable mode". If this worked (never tried), I'd have to include 3 executables in my USB drive: the Windows portable version, the Linux portable version and the MAC portable version.  So my questions:   Will the portable versions work as intended? The Win TrueCrypt executable certainly does, but what about the MAC and Linux versions? Will I need additional configuration in the host OS, permissions or drivers? I've heard that MAC doesn't support writing to NTFS (lmao). Otherwise this is the best filesystem for the pendrive since it is supported in both Windows and Linux. I could use the old FAT32 but it has a limit of 4 GB per file. My TrueCrypt volume needs to be way larger. So to make the drive RW-able in MAC, I've thought in including the NTFS-3G files in the USB, so that I could install them in a MAC machine should the need arise. Is this a good idea? Will I need admin permissions or make extensive configuration changes? (the MAC machine will not be mine, probably a hotel's or an internet cafe one). If #2 is not a good idea, I could partition the drive and include a Linux bootable distro only to cover the MAC case, and use the NTFS partition normally under Win and Linux. But Windows wont then recognise the second partition in a removable drive. I've read this can be overcomed by removing a "removable media bit" and converting the USB drive in a fixed drive. Is this bit stored or flashed in the USB drive, or is it part of the Windows OS configuration? Will all the partitions be recognised without problems in Linux and MAC? And most importantly, can a MAC run a linux live distro? Regarding #3, I've read about a Lexar tool (BootIt) that flips the bit, will this work with a Kingston pendrive?    Thanks in advance.


Hyperlinks from chapter and section headings back to the table of contents

What I'd finally like to have are clickable backlinks from the headings to the table of contents. The goal is to click on a heading and land on that exact heading in the toc. As far as my search efforts are concerned there is no easy way to reach this. So I tried to start by linking to the toc like . But I already fail to place links in headings, which seems to be impossible and results in this error message:  pdfTeX error (ext1): \pdfendlink cannot be used in vertical mode.   Just to clarify this, as there seem to be potential misunderstandings in other discussions on the web: I don't want to change the style of the headings! The links should be invisible like when using the hidelinks option. I left the links visible in the MWE for better overview.  So here's the MWE with one of my error producing lines NOT commented out:  \documentclass{scrreprt} \usepackage{hyperref} % \usepackage[hidelinks]{hyperref}%Works like a charm  % And I would like to do something like that too: % \renewcommand{\chapter}[1]{\hyperlink{toc}{\chapter{#1}}}  \begin{document}  \hypertarget{toc}{\tableofcontents}  \chapter{This is a great headline}%Working % \chapter{This \hyperlink{toc}{is} a great headline}%Not working % \chapter{\hyperlink{toc}{This is a great headline}}%Also not working \hyperlink{toc}{\chapter{This is a great headline}}%Also not working Here is some text to prove, that \hyperlink{toc}{links} to toc work, if they're not in headings\ldots \section{This is a section heading} % \section{This is a \hyperlink{toc}{section} heading}%Also not working \section{and another}  \chapter{This is a bad headline!} \section{last section}  \end{document}   In the end it would be great to get the links automatically in every heading, like I tried to with the renewcommand.


What conservation law corresponds to Lorentz boosts?

Noether's Theorem is used to relate the invariance of the action under certain continuous transformations to conserved currents. A common example is that translations in spacetime correspond to the conservation of four-momentum.  In the case of angular momentum, the tensor (in special relativity) has 3 independent components for the classical angular momentum, but 3 more independent components that, as far as I know, represent Lorentz boosts. So, what conservation law corresponds to invariance under Lorentz boosts?


Using Javacode to get the actual name of the Program that is top

I am currently writing a Java Application, that needs to filter the name of the Program whichs UI is front. Sorry for my bad english. So let's say the Java App is running in Background and I open Windows -> Games -> Minesweeper then i want the App to only tell me "Active: Minesweeper". Without any additional information. Just the name "Minesweeper"  I already tried using JavaNativeAccess but I'm still unfamiliar with it.  Thanks you all in advance


If $f$ and $g$ are bounded and uniformly continuous prove that $fg$ is uniformly continuous

Please check my proof:  Suppose $f(x)$ and $g(x)$ are bounded and uniformly continuous, then we obtain  $|x-y|<\delta \rightarrow |f(x)-f(y)|<\sqrt{M}\sqrt{|x-y|}$  and  $|x-y|<\delta \rightarrow |g(x)-g(y)|<\sqrt{M}\sqrt{|x-y|}$  added those we get  $|x-y|<\delta \rightarrow |f(x)-f(y)||g(x)-g(y)|<\sqrt{m}\sqrt{|x-y|}\sqrt{m}\sqrt{|x-y|}=M|x-y|$  that satisfy Lipschitz condition, therefore $f(x)g(x)$ is uniformly continuous.


In the book 7, there was some kind of reconciliation between Harry Potter and Dudley. Did they become friends later and did Dudley's and Harry's families met during family holidays?


PGF outtput differences depending on compiler

Im trying to use     \documentclass[margin=5mm]{standalone} \usepackage{tikz} \usetikzlibrary{calc,intersections}  \tikzset{   anticlockwise arc centered at/.style={     to path={       let \p1=(\tikztostart), \p2=(\tikztotarget), \p3=(#1) in       \pgfextra{         \pgfmathsetmacro{\anglestart}{atan2(\x1-\x3,\y1-\y3)}         \pgfmathsetmacro{\angletarget}{atan2(\x2-\x3,\y2-\y3)}         \pgfmathsetmacro{\angletarget}%         {\angletarget < \anglestart ? \angletarget+360 : \angletarget}         \pgfmathsetmacro{\radius}{veclen(\x1-\x3,\y1-\y3)}       }       arc(\anglestart:\angletarget:\radius pt) -- (\tikztotarget)     },   },   clockwise arc centered at/.style={     to path={       let \p1=(\tikztostart), \p2=(\tikztotarget), \p3=(#1) in       \pgfextra{         \pgfmathsetmacro{\anglestart}{atan2(\x1-\x3,\y1-\y3)}         \pgfmathsetmacro{\angletarget}{atan2(\x2-\x3,\y2-\y3)}         \pgfmathsetmacro{\angletarget}%         {\angletarget > \anglestart ? \angletarget - 360 : \angletarget}         \pgfmathsetmacro{\radius}{veclen(\x1-\x3,\y1-\y3)}       }       arc(\anglestart:\angletarget:\radius pt)  -- (\tikztotarget)     },   }, }  \begin{document} \begin{tikzpicture}   % 3 centers (a, b, c)   \coordinate (a) at (0,0);   \coordinate (b) at (-1,-1);   \coordinate (c) at (1,-1);    % 3 circles   \draw[name path=circleA] (a) circle (1.5cm);   \draw[name path=circleB] (b) circle (1.5cm);   \draw[name path=circleC] (c) circle (1.5cm);    % label of circles   \node (A) at ($(a)+(0,1)$) {$A$};   \node (B) at ($(b)+(-1,0)$) {$B$};   \node (C) at ($(c)+(1,0)$) {$C$};    % intersections of circles (A) and (B)   \path [name intersections={of=circleA and circleB,name=AB}];   % show them   \fill[red] (AB-1) circle (2pt) node[above left] {AB-1};   \fill[red] (AB-2) circle (2pt) node[below right] {AB-2};    % intersections of circles (A) and (C)   \path [name intersections={of=circleA and circleC,name=AC}];   % show them   \fill[red] (AC-1) circle (2pt) node[above right] {AC-1};   \fill[red] (AC-2) circle (2pt) node[below left] {AC-2};    % intersections of circles (B) and (C)   \path[name intersections={of=circleB and circleC,name=BC}];   % show them   \fill[red] (BC-1) circle (2pt) node[above] {BC-1};   \fill[red] (BC-2) circle (2pt) node[below] {BC-2};     \draw[line join=round,orange,fill=orange,fill opacity=.5,line width=1pt]   (AC-2)   to[clockwise arc centered at=a] (AB-2)   to[anticlockwise arc centered at=b] (BC-1)   to[anticlockwise arc centered at=c] (AC-2);  \end{tikzpicture} \end{document}   to draw part of a circle. However, when compiling with MikTeX 2.9 or TexLive 2015, the result ends up looking like this  instead of this  .  Compiling with older versions of TexLive gives the desired output. I assume this is because these old versions don't use pgf 3.0 yet. How can I fix this code to work properly with the new version of pgf?


Should I send reminder to a professor in a school I applied to, for an introduction email I sent two weeks ago?

I have applied to 4 PhD applications in Computer Science and I have sent an introduction email to a professor in each of the schools I have applied to. In this email I first introduced myself and then mentioned one of their papers I'm interested in, and at the end asked them for any time they can give me to meet them in person and talk to them about my future plans.   But, I just heard from one professor and the rest have not replied my email after two weeks. How could I write an email to remind them about my old email I sent them?   I googled and did not find a concise answer. Any help is appreciated.


How to prove the convexity of $\operatorname{Tr}(WLW^T)$, where $L$ is a Laplacian matrix?

How to prove the convexity of   $$f (W) = \operatorname{Tr}(WLW^T)$$  where $L$ is a (positive semidefinite) Laplacian matrix?  I need to prove this to build a convex function for optimization in a machine learning method.


Error: TexStudio "Could not start command"

I just installed  and compiled the following  \documentclass{article} \begin{document} \end{document}   but I get this error  Error: Could not start the command: "/usr/texbin/pdflatex" -synctex=1 -interaction=nonstopmode "texstudio_qH5268".tex   I already installed , so why do I get this error?


I booked a round-trip flight for me and my wife from Egypt to Los Angeles for a family visit. I had to stay longer in LA than previously planned. However my wife should get back PLUS my mother-in-law.  Is there any way my mother-in-law can replace me on the return flight?


Add a symbol in ToC between the section number and its section

My problem is that there exists an overlap between the symbol to introduce and the section title; it is manifest with two \heartsuits  \documentclass{article} \usepackage{tocloft} \usepackage{lipsum} %\contentslabel{3em}   \renewcommand\tableofcontents{% \section*{\contentsname\@mkboth{}{}}% \thispagestyle{empty}% %\small% \@starttoc{toc}% \thispagestyle{empty}% \clearpage% } \makeatother    \makeatletter \renewcommand{\@dotsep}{2} %%\renewcommand{\cftdot}{\ensuremath{\ast}} \renewcommand{\cftpnumalign}{r} %\renewcommand{\cftsecpresnum}{SOMETHING } \renewcommand{\cftsecfont}{\bfseries} \renewcommand{\cftsecleader}{\bfseries\cftdotfill{\cftsecdotsep}} \renewcommand{\cftsecpagefont}{\bfseries} %\renewcommand{\cftsecpresnum}{SOMETHING } \renewcommand{\cftsecaftersnum}{$\heartsuit$}     \renewcommand{\cftsecaftersnumb}{$\heartsuit$}     %\renewcommand{\cftsecaftersnumb}{\\} %   \newlength{\mylen} % a "scratch" length %   \settowidth{\mylen}{\bfseries\cftsecpresnum\cftsecaftersnum} % extra space %   \addtolength{\cftsecnumwidth}{\mylen} % add the extra space     %\makeatother   \begin{document} \tableofcontents  \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11] \section{1}\lipsum[4-11]  \end{document}   The modifying commands come straight from the manual of tocloft.  My goal is to have {the section number}\heartsuit{the section title} with no space in-between the characters.  I think the solution is to make the section numbers ragged on the right, just like all the page numbers are. The package does not seem to offer a manner to control the box controlling the section number. Is this possible with titletoc? (its readme is very succinct and I do not understand half of what is written)  EDITion:  @Werner: I have a snag with the code. I want to use the same pattern for the subsections and subsubsections as the one of the sections. So I use  \renewcommand{\cftsecaftersnum}{$\bullet$} %\renewcommand{\cftsecnumwidth}{2em}  \renewcommand{\cftsubsecaftersnum}{$\bullet$} %\renewcommand{\cftsubsecnumwidth}{0em}  \renewcommand{\cftsubsubsecaftersnum}{$\bullet$} \renewcommand{\numberline}[1]{\makebox[\@tempdima][r]{\@cftbsnum #1\@cftasnum}\@cftasnumb}    but the beginnings of the subsections and subsubsections is not adequate: (I use roman numbers for my sections and sub(sub)sections) Ideally, the number subsection (and subsubsection) must be aglin with the first letter of the sections it belongs to  so  II$\bullet$Title            II.1$\bullet$subtitle                         II.1.1$\bullet$subtitle   But it is not the case with the above code.


How to copy values from one column to another

how can i copy values from one column to another? I'm using a workflow but i cant see the option "Copy List Item"   ps: I'm using Sharepoin On-line


Is there a way to have C++ like enumerated types like in Python? For example, in C++ I can do:  enum Foo {     bar,     foobar,     blah };   and use these as global constants. Is there a similar thing in Python?


In electrostatics, why in the internal surface of a hollow charged sphere there aren't charges?


How to make a Rigid Body fall off a conveyor belt?

I've created conveyor belt and and two objects with rigid body physics. But the first object won't fall and second object falls backwards.  How can I fix it?


We know Euler's formula  $$e^{i \theta} = \cos(\theta) + i \sin(\theta)$$   Let say $$\theta=\frac{\pi}{2}$$ Then we will get $$e^{i \frac{\pi}{2}} = \cos(\frac{\pi}{2}) + i \sin(\frac{\pi}{2})$$ As we can see    $$e^{i \frac{\pi}{2}} =  i$$  Then we can wright...       $$i^i = i^{e^{i \frac{\pi}{2}}}$$  or $$i^i = (e^{i \frac{\pi}{2}})^i = e^{-\frac{\pi}{2}} \approx 0.208$$ As we can see the result is as Real number. It is not an imaginary number! Did I compute it correctly? I think that I made little mistake above instead of $\theta=\frac{\pi}{2}$ I should wrote $\theta=\frac{\pi}{2} +2\pi k $ ,  $ k\in N\cup {0}$ $$e^{i {(\frac{\pi}{2}+2\pi k})} =  i$$  $$i^i = (e^{i (\frac{\pi}{2}+2\pi k)})^i = e^{-\frac{\pi}{2} - 2\pi k}$$ So... $$k = 0 \implies e^{-\frac{\pi}{2}} \approx 0.208 $$ $$k = 1 \implies e^{-\frac{\pi}{2} - 2\pi} \approx 3.882*10^{-4} $$ $$k = 3 \implies e^{-\frac{\pi}{2} - 6\pi} \approx 1.354*10^{-9} $$  Is it true that: As we can see $ {i}^{i} $ has a lot of answers!? I mean it has as many answers as many natural number exists! Are all answers as a real number?


function doesn't work on load links - jQuery function

In first I excuse with you for my English! I have been studying since 2 years!  I have this problem with my function for loading a messagges quote for my website.  The function could work in this way:   Users click on a link like as   Show quote An ajax function get the text quoted. Response text replaces   Show quote  with
text quote found
   All works fine!  Problem is when in the response text, there is another link which shows another quotes.So when I click it, function doesn't work and browser load directly the link quote.   This is the function:  $('a[rel=quote_link]').on('click',function(){   linkQuote = $(this).attr('href');  textQuoted = $.ajax({url:linkQuote,type:"GET",async:!1}).responseText;   $(this).replaceWith( "
" + textQuoted + "
" );   event.preventDefault();  });   I have read on stackoverflow.com that to use jQuery .on(), but function still doesn't work!  Thank you at everyone :).  Sorry for my English and I hope that I understand the rules of posting new question.


I want to calculate the integral over $$A=\{ (x,y): \frac{x^2}{a^2} + \frac{y^2}{b^2} \leq 1 \}$$  When I solve that equation for y, I get:  $$ y\leq b\sqrt{1-\frac{x^2}{a^2}}$$  But how can x be bounded, when I integrate y in this way at first?


How to stop partition icons in Unity launcher?

New problem. Ubuntu 16.04/16.10. Now, whenever I start gparted, new disk partition icons appear, just above the trash can icon, in the Unity launcher. I have to "unlock from launcher" to get rid of them.  Older posts for older versions of Ubuntu propose various fixes that no longer apply in 16.04/16.10. Any ideas of how to permanently get rid of these pesky icons?  Here's a screenshot that shows the 3 icons, just above the trash can icon:


No user account being generated. only guest log in

I bought a Dell Vostro 3558 laptop with preinstalled ubuntu 14.04  It is only showing guest account log in. Not able to generate my personal account.it is not even taking password  to unlock account. Please guide. Mahen


Do both have the same meaning? Or they are subtly different? Example sentence:  What was (the) best? To go left or right, up or down?   it says that both are exactly the same. But I wonder if that's really the case.


How to convert RAW formated Pendrive back to NTFS File system?

How to convert RAW formated Pendrive back to NTFS File system ???  Please let me know if anyone has solution.  I am unable to transfer any data to my pen drive.  Whenever I connect it to my Laptop it shows pop up that Format Needed  But windows is unable to complete the format.


Why was the killer's face never revealed in V for Vendetta (2005)?

Why was the killer's face never revealed in ?


Is there a way to find out what's exactly executing the Windows Script Host?

So, long time ago I got a malware from a pendrive, it cloned a directoy on my system32 folder and attempted to do bitcoin mining on my pc. After that, every new pendrive connected to my pc would also get the folder copied from my system32 to the pendrive. So after I found the source, I deleted the directory and every registry about it from regedit, and it worked fine. There's only one thing missing, everytime I turn out the computer a Windows Script Host error would show up saying "Cannot find file C:\system\system.vbs" (which was in the folder I purged) and even after I close it, it would show up again, so that means there's still the process that tries to execute that vbs.  Is there a way to find the source of the windows script host error? Or the process that's executing it?  So I can 100% purge this malicious thing at last


I'd like to edit the table of contents for a book-class file. The problem that I'm facing is that I have a lot of separate Chapters, with no sections, in the first part of the book. If I just use \tableofcontents it looks like this:  I Part 1. Chapter    1.1 Section II Part    2. Chapter   etc. which is generally fine, but since I have a lot of chapters it looks somewhat ugly. I'd would like something like this  I Part    I.1. Chapter      I.1.1 Section    I.2. Chapter  II Part    II.1. Chapter   but I honestly have no idea how to realize that. I'll also add an example code here, since I'm not sure if there could be a problem with the subfile-package  \documentclass[a4paper, leqno, oneside]{book} \usepackage{subfiles} \usepackage[utf8]{inputenc} \usepackage[ngerman]{babel} \usepackage{amssymb,amsmath, amsthm,mathtools,latexsym} \usepackage{mathrsfs} \usepackage{geometry} \usepackage{soul}  \begin{document} \subfile{Preface.tex} \tableofcontents \subfile{Part1.tex} \subfile{Part2.tex} \subfile{Part3.tex}  \end{document}   Thanks for the help!


limsup of intersection of events as a subset of intersection of limsups

Let $A_1, A_2, \ldots$ and $B_1, B_2, \ldots$ be two sequences of events in some probability triple $(\Omega, \mathcal{F}, \mathbf{P})$. Now, it is true that $\left(\limsup_n A_n\right) \cap \left(\limsup_n B_n\right) \supseteq \limsup_n (A_n \cap B_n)$, and I can think of many different cases where this relation holds true for equality (e.g., let $A_n = B_n$, or $A_n = B_n^c$, or $B_n = \emptyset$, or $B_n = \Omega$). However, I cannot think of any case where $\left(\limsup_n A_n\right) \cap \left(\limsup_n B_n\right) \supset \limsup_n (A_n \cap B_n)$ holds for strict inclusion.  My proof for the relation is simple. Since $A_n \cap B_n \subseteq A_n$ and $A_n \cap B_n \subseteq B_n$, then we can perform some set algebra as follows:  $$\bigcup_{k=n}^\infty (A_k \cap B_k) \subseteq \bigcup_{k=n}^\infty A_k$$ $$\bigcap_{n=1}^\infty \bigcup_{k=n}^\infty (A_k \cap B_k) \subseteq \bigcap_{n=1}^\infty \bigcup_{k=n}^\infty A_k$$  Then we can use the same logic for $B_n$, and come to the conclusion as stated in the beginning.


So I was playing around with, $$\sum_{n=0}^\infty 2^n= 1+2+4+8+16+... $$ Let $S$ be the sum $$S= 1+2+4+8+16+...$$ Dividing both sides by $2$ $$\frac{S}{2}=\frac{1+2+4+8+16+...}{2}$$ Which means $$\frac{S}{2}=\frac{1}{2}+1+2+4+8+...$$ Or $$\frac{S}{2}=\frac{1}{2} + S$$ Therefore after solving for $S$ we get, $$S=-1$$ I believe I'm doing something terribly wrong here but I am convinced that the math checks out. Please help. I am in $10$-th so please bear with me if this is a stupid idea and tell me why it's wrong, cause I know it's wrong.


Can't update from 17.10 to 18.04 because a repository doesn't have a Release file

When I try to update from Ubuntu 17.10 to 18.04 I get the following error message:  E:The repository 'http://ppa.launchpad.net/jonathonf/backports/ubuntu artful Release' does not have a Release file., W:Updating from such a repository can't be done securely, and is therefore disabled by default., W:See apt-secure(8) manpage for repository creation and user configuration details., W:Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:49 and /etc/apt/sources.list.d/vscode.list:3, W:Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:49 and /etc/apt/sources.list.d/vscode.list:3, W:Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:49 and /etc/apt/sources.list.d/vscode.list:3, W:Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:49 and /etc/apt/sources.list.d/vscode.list:3, W:Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:49 and /etc/apt/sources.list.d/vscode.list:3, W:Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:49 and /etc/apt/sources.list.d/vscode.list:3   How do I continue upgrading?


So I'm fairly new to Java and I am trying to run a program that will display a certain number of letters from a name and ask the user for a response. The user's response should determine one of two answers ("Correct" or "I'm sorry, that's incorrect"). The problem I'm encountering is that when I run the program and put in the answer that should lead to "Correct," which is 'Billy Joel,' I get the response of "I'm sorry, that's incorrect." I'm not actually sure what's going on, but here's a link to a picture of the CMD when I input what should lead the system to say "Correct" and instead it says "I'm sorry, that's incorrect":    And here is a copy of the relevant code:  System.out.println("\nLet's play Guess the Celebrity Name.");  String s6 = "Billy Joel";  System.out.println("\n" + s6.substring(2, 7));  Scanner kbReader3 = new Scanner(System.in); System.out         .print("\nPlease enter a guess for the name of the above celebrity: "); String response = kbReader3.nextLine();  System.out.println("\nYou entered: \n" + response + "\n");  if ((response == "Billy Joel")) {     // Execute the code here if Billy Joel is entered     System.out.println("\nCorrect!"); } else {     // Execute the code here if Billy Joel is not entered     System.out.println("\nI'm sorry, that's incorrect. The right answer was Billy Joel."); }  System.out.println("\nThank you for playing!");   There's more before this that the program also does, but I'm not having a problem with any of that and it's all correct. I took out the Billy Joel part and everything else ran exactly as it was supposed to. It's just the above code in relation to what it should put out and what it is putting out that's the problem. I'm wondering if maybe I'm missing something in my code or I put something in wrong, but whatever I did, help would be much appreciated.


How to evaluate $ \int_0^1 {\log x \log(1-x) \log^2(1+x) \over x} \,dx $

Solve that the following integral: $$ \int_0^1 {\log x \log(1-x) \log^2(1+x) \over x} \,dx. $$  I haven't solved it yet.


How can I change the SID of an Oracle XE instance

I needed to change the SID of an Oracle XE database (not the Service Name) to match a production database.  When I tried searching online, most of the pages were describing changing or adding a service name through tnsnames.ora; that's not what I needed to do.


Which hydroxyl from either the phosphate or the glycerol is taken during synthesis of a phospholipid head?

The oxygen anion in the phosphate group is likely to be bonded with a hydrogen cation and thus forming a hydroxyl.  When the phosphate group is condensed with glycerol to make a phospholipid, is the hydroxyl from the glycerol molecule taken or the hydroxyl from the phosphate group taken?  I believe it's related to the difference of electronegativity of oxygen and phosphorus which causes unequal sharing of electrons between atoms, thus making a hydroxyl from one side easier to get taken off than the hydroxyl from the other side is.


Getting from Terminal C to Terminal A in Newark

I am now freaking out about my 42-minute layover in Newark.  We are arriving at terminal C and have a flight to Quebec 42 minutes later in terminal A.  We do NOT want to have to go through security again. Since United allowed this booking, any chance I can make SURE we get to the next gate/terminal and get on our plane? Fastest Suggestions anyone. Thanks!!


Software Center Messing Around (Ubuntu 21.04)

Prior to this I disabled settings in the Software & Updates such as Community Maintained software. After a while the Software Center disappeared. I restarted  the computer and it was still gone. I installed the gnome-software center from terminal but it isn't quite like the original one and installed additional applications such as Packages. How to install the original one without reinstalling the OS? I'm running Ubuntu 21.04. I'm also concerned that this software center is not going to get things like updates. It's also using an old icon as opposed to the newer and original one Ubuntu provides.


SQL Server - What is the best method to run the same query over multiple databases on multiple instances? for example we have many application databases, with the same schema that need to have information aggregated.  I currently use a script that relies on linked servers already being setup and a table that identifies which instance and database to loop through.          /* declare some cursor variables and the dynamic sql string variable */     DECLARE @currentDB          nvarchar(64)     DECLARE @connectionstring   nvarchar(256)     DECLARE @sqlstring          nvarchar(max)  CREATE TABLE #TEMP1                 (                      currentDB      varchar(32)                     ,field1         varchar(128)                     ,field2         smallint                     ,field3         datetime                 )  /* Build and open the cursor */ DECLARE connectioncursor CURSOR FAST_FORWARD FOR     SELECT  currentDB, connectionstring     FROM    [admin].dbo.DatabaseList     WHERE   dbtype = 'PROD' OPEN    connectioncursor FETCH NEXT FROM connectioncursor INTO @currentDB, @connectionstring  /* Start the loop through db list */ WHILE @@FETCH_STATUS = 0     BEGIN         /* Build and set the sql string */         SET @sqlstring =             '                 select                          ''' + @currentDB + '''                         ,field1, field2, field3                         from ' + @connectionstring + '.dbo.table1             '          /* Insert the results from the iteration and fetch the next db */         INSERT INTO #TEMP1 exec sp_executesql @sqlstring         FETCH NEXT FROM connectioncursor INTO @currentDB, @connectionstring     END  /* Kill the cursor */ CLOSE connectioncursor DEALLOCATE connectioncursor   select * from #TEMP1  -- some output   Be gentle I'm a TSQL newbie!


Let $X$ and $Y$ be two random variables with finite second moments and $E(X \mid Y) = Y$ , $E(Y \mid X)= X$. Show that $P(X = Y)= 1$. I tried using conditional expectation, so $E(E(X \mid Y))=E(Y) \Rightarrow E(X)=E(Y)$, but then I'm totally stuck on how to continue. I don't even know how to relate it to probability or using the fact of finite second moment. Any help is appreciated. Thank you.


Samsung chromebook and the new Wacom intuos pen and touch tablet

I would like to use my new wacon Intuos pen and touch tablet with my Chromebook.   I installed Ubuntu Unity 12.04 on my samsung chromebook. I works well. I have seen a that there is some kind of wacom driver or something already installed with this version of ubuntu (Wacom Graphics Tablet). Saddly, when I plug the device... nothing. It powers on but that is all.


HDD in optical bay spins down and up constantly

I've installed an SSD and HDD in the optical drive slot on my notebook. I'm using windows 8.1 x64, running from my SSD which is my primary drive.  My problem is taht HDD spins up/down constantly, in the past 8 hours the number of spinups reachead 400.  I've changed "Turn off hard disk after" feature to "Never" in Advanced Power Options, but no luck, nothing changed.  Could this be a hardware oriented problem, or can I configure the energy management features for this?


How to solve the following limit $\lim_{n\to\infty} n^2\cdot(\sqrt[n]{x}-\sqrt[n+1]{x})$?

$$\lim_{n\to\infty} n^2\cdot(\sqrt[n]{x}-\sqrt[n+1]{x})$$  My first idea, since it's $0 \cdot \infty$ (might be wrong though) was to re-write the multiplication as a fraction $\frac{\sqrt[n]{x}-\sqrt[n+1]{x}}{\frac{1}{n^2}}$ and apply L'Hospital but I don't think it gives the right answer (wolfram says it's ln x) so I'm pretty much out of ideas since I don't see any remarkable limit there  Thanks in advance.  By the way, I found the problem in a book that's for eleventh grade (or junior year) so I'm pretty sure there's a trick somewhere that I'm not aware of


Elementary proof that $2^x$ is derivable

I was wondering if there was an elementary proof, so not using the exponential function, that $2^x$ is derivable. I define the function $f(x) = 2^x$ by $f(a/b) = \sqrt[b]{2^a}$ for a and b integers, and I extend this function by continuity for the rest of the reals. Because we have $\lim_{h\to 0} \frac{2^{x+h} - 2^{x}}{h} = 2^{x} * \lim_{h\to 0} \frac{2^{h} - 1}{h}$, I just need to show that this last limit exists, but I couldn’t do it.  This question is interesting to me, because it could be an elementary way to prove that there is a unique real positive number e, such that $(e^x)’ = e^x$. We see easily that $2^x$ is continuous and strictly increasing, therefore we can define $\log_2(x)$ for $x > 1$. We define $a = \lim_{h\to 0} \frac{2^{h} - 1}{h}$, and we have for all real number $r > 1$, $(r^x)’ = (2^{\log_2(r)*x})’ = \log_2(r)*a*r^x$. If we pose $e = 2^{1/a}$, we have $(e^x)’ = e^x$.  Edit : my bad, I found quite the same question here : , and there’s a pretty neat answer by zhw.


Hello. When I log into Minecraft it says that there is an "error connecting to servers". When I see the error log, it says:  MagicLauncher 1.0.0 java.home: C:\Program Files\Java\jre7 java.runtime.name: Java(TM) SE Runtime Environment java.runtime.version: 1.7.0_09-b05 os.name: Windows 7 os.version: 6.1 os.arch: amd64 sun.arch.data.model: 64 java.net.SocketException: Connection reset     at java.net.SocketInputStream.read(Unknown Source)     at java.net.SocketInputStream.read(Unknown Source)     at sun.security.ssl.InputRecord.readFully(Unknown Source)     at sun.security.ssl.InputRecord.read(Unknown Source)     at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)     at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)     at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)     at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)     at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)     at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)     at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(Unknown Source)     at magic.launcher.ak.a(Unknown Source)     at magic.launcher.z.run(Unknown Source)     at java.lang.Thread.run(Unknown Source) Error loading: .http://www.minecraftforum.net/rss/writ/1-news/: Connection reset Error loading: .http://search.twitter.com/search.atom?q=from%3Ajeb_: Connection reset Error loading: .http://search.twitter.com/search.atom?q=from%3ADinnerbone: Connection reset Error checking for new version: Connection reset Error loading: .http://reddit.com/r/minecraft.rss: Connection reset Error loading: .http://search.twitter.com/search.atom?q=from%3Anotch: Connection reset Error loading: .http://notch.tumblr.com/rss: Connection reset


To prove that every element of $G$ has finite order.

Let $G$ be a group such that the intersection of all its subgroups which are different from $e$ is a subgroup different from $e$. Prove that every element of $G$ has finite order.   Can i get some hints to get started?  Thanks.  EDIT   As per suggestion of user Slade, i have proceeded according to this   If $g$ has infinite order, then the cyclic group that $g$ generates will have elements of the form $\{g,g^{2},g^{3},......)$.   The claim is that no two elements are same, i.e. there are no repetitions. To show this let us assume that there are repetitions, say $a^{i}=a^{j}$, for some $i,j$. Then $a^{i-j}=e$ and this contradiction of $a$ having infinite order.   What should i do next?


how to transform my c++ for exe to a code for dll

I have a c++ class that I've defined in a header file testclass.hpp  the code works fine in as an .exe now I want to use it for a dll  and I don't know how to do it I visted MSDN site and did what they tell there but in didn'T help , any idea how to do this. here a code example :  #ifndef TESTCLASS_H #define TESTCLASS_H  #include <iostream>   class Test{     private:       int variable1;      int variable2;     public:      Test(float,int);      ~Test();      void doStuff();      int getstuff();  }; #endif   and this is what I tried :  #ifndef TESTCLASS_H #define TESTCLASS_H #ifndef TESTCLASSDLL_EXPORTS #define TESTCLASSDLL_API __declspec(dllexport)  #else #endif #define TESTCLASSDLL_API __declspec(dllimport)  #include <iostream>   class Test{     private:      static __declspec(dllexport) int variable1;     static __declspec(dllexport) int variable2;     public:     TESTCLASSDLL_API Test(float,int);     TESTCLASSDLL_API ~Test();     TESTCLASSDLL_API void doStuff();     TESTCLASSDLL_API int getstuff();  }; #endif


Does anything specific happen when you build all the imperial levels?

I have built 16/16 imperial levels, however the death Star behind the emperor is not complete (missing a small portion on the top). More disconcerting is that the imperial "mission" tells me I must build another imperial level in order to see what I must build next. It costs 100 bux to skip. Is this a bug, or is it simply wanting something from the "coming soon"future updates? Has anyone else experienced this or found a fix besides paying to skip (which may result in it happening again)?


Find all positive integers a,b,c to the equation a!b!= a!+b!+c!

I think I have proved that that a cannot be greater than b (ie a & b must be equal) then using this fact I got a quadratic in terms of a and c, trying out some values I got that (3,3,4) is a solution, but how do I prove this is the only solution or if this is not the only solution then what are the other solutions and how do I find them?


I would like to add an arrow to an Inkscape project. I read this question but it didn't tell how to actually make the arrow:


Let we have the following sequence  $$y_n= \frac{1}{\sqrt{n^2+1}}+\frac{1}{\sqrt{n^2+2}}+\cdots+\frac{1}{\  \sqrt{n^2+n}}$$ find the limit of the sequence $y_n$ decide whether it is increasing or decreasing


I have what I consider to be an above average computer. Specs Gforce GTX 780ti. 16GB Memory Intel i7 - 4790k 4.00GHz. However although it would appear to be fast when rendering the blenchmark test render, turning in a respectable 1 min 12 secs. When it came to rendering my first ever tutorial off the Blender Guru site. (The one with the Doughnuts..you may have seen it). With samples set to around 128 blender reports it would take over 4 hours to render out. Surely this can't be right. So it's out of desperation that I'm turning to anyone out there who can help me out as I haven't got a clue why this should be the case. Would therefor appreciate any help on the matter please.  Thanks Foxtrot


Deriving $(n-1)\frac{S^2}{\sigma^2} \sim \chi^2(n-1)$

I can accept the fact that $Z^2 = \dfrac{\left(X-\mu\right)^2}{\sigma^2} \sim \chi^2(1)$ without knowing too much about this mysterious $\chi$-function, but I'm wondering how I can show that $(n-1)\dfrac{S^2}{\sigma^2} \sim \chi^2(n-1)$ from this?     Let $X_1 + X_2+\cdots+X_n$ be independent normally distributed variables:   $S = \dfrac{1}{n-1}\sum_{i=1}^n \left(X_i-\bar X\right)^2$      $W^2 = \dfrac{(\sum_{i=0}^n X_i -\bar X)^2}{\sigma^2} = \;? = \dfrac{n-1}{n-1}\dfrac{\sum\left(X_i-\bar X\right)^2}{\sigma^2} = \dfrac{(n-1)S^2}{\sigma^2} \overset{?}{\sim} \chi^2(n-1)$   I'm assuming some of this is wrong, and I don't really understand the argument of $\chi$ (why isn't it $\chi(n)$?), but I'm mostly interested in seeing a better derivation of the last result, if there is one.  Any help is appreciated!


Mobile view and desktop view showing different messages when chat banned

When viewing any room now on MSE chat on mobile device (or desktop with mobile theme), I see the following message:        Or in text:     This room is read-only   While this is technically true (it is read only for me since I'm chat banned), this implies the room is in gallery mode, so nobody (other than RO and approved users) can talk there.  The full site theme already has a friendly and useful message instead:        Can this message be applied in mobile theme as well?


I'll try to be short and simple.   I had Windows 8.1 (came with the computer) I tried to install Ubuntu I accidentally clicked continue with "erase disk and install" selected. Now everything is gone... My laptop doesn't even seem to have a factory image to reset to. No, I did not backup anything. :(   Ubuntu seems to be installed on my computer, and there is only one drive anymore (the now dedicated Ubuntu drive, I guess...).  Is there anyway I can undelete my hard disk? I just want my Windows 8 back...


Please Help me...  Account sObject is Parent of Attachment. Now I want to bring Read-only Field Custom field (isReadOnly__c).  SELECT Id, Name, Account.isReadOnly__c FROM Attachment   How It Gets ?  Thanks in Advance  Manu


How do I make my textures show in cycles?

I am admittedly new to Blender, and of course cycles. I am working on a scene and I have textures set to my objects that render with internal engine just fine. However, when I go into cycles, everything is greyish. I have two light sources that should be sufficient (I think), I just don't know what I'm doing wrong. This is a screenshot of the cycles result.


A text import screen pops up while trying to copy and paste an xlsx spreadsheet

When I try to copy and paste an xlxs spreadsheet, a text import screen pops up. This has not happened before. How do I stop it and, revert back to a simply copy and paste?


How to transfer Pokemon Go (using an Apple account) from iPhone to an Android phone?

My best friend has an old iPhone 5 she use to play pokemon on. For Christmas I bought her an android so she can play again but we don't know how to move her account over. Other words old iPhone to new android.


How is Loki alive in the second movie of Thor?

Loki let goes of Thor and float into space and dies in the first movie. Then Loki is alive in the second movie. How is this possible?


Lock Superman Underground, how long till he loses his powers?

If we were to take superman, and hide him from a yellow sun by any means (underground, too far, block the sun, perpetually staying in night regions), how long would it take for his powers to be lost?  I'm not looking for speculation, I am asking for comic or cartoon examples, hopefully with a given time frame. Considering the average day has between 8 to 16 hours of light, he can obviously recharge in at least that amount of time.  Of course, no red sun/lights/lamps involved, that's cheating.


I have a problem with GetFeatureInfo (I'm working with openlayers).  In my HTML file I have this:

Sieraków MAPA

   And I want to show some info in div #info.  In javascript I have layer from geoserver:  var theurl = 'http://localhost:8080/geoserver/sierakow/wms';     var jeziora = new ol.layer.Image({           source: new ol.source.ImageWMS({             url: theurl,             params: {'LAYERS': 'sierakow:jeziora'},             serverType: 'geoserver'           })     });     map.addLayer(jeziora);      map.on('singleclick', function(evt) {             document.getElementById('info').innerHTML = '';             var viewResolution = view.getResolution();             var url = jeziora.getGetFeatureInfoUrl(               evt.coordinate, viewResolution, 'EPSG:4326',               {'INFO_FORMAT': 'text/html', 'FEATURE_COUNT': 50});             if (url) {               document.getElementById('info').innerHTML =                   '';             }     });   To do this I followed this examples:  I also try  with parsing but result is the same, nothing happend. My div #info is still empty and I don't know why.   Console show me this errors:  Uncaught TypeError: jeziora.getGetFeatureInfoUrl is not a function  Uncaught DOMException: Failed to execute 'getImageData' on 'CanvasRenderingContext2D': The canvas has been tainted by cross-origin data.   This is url:   http://localhost:8080/geoserver/sierakow/wms?SERVICE=WMS &VERSION=1.3.0 &REQUEST=GetFeatureInfo &FORMAT=image%2Fpng &TRANSPARENT=true &QUERY_LAYERS=sierakow%3Ajeziora &LAYERS=sierakow%3Ajeziora &INFO_FORMAT=text%2Fhtml &FEATURE_COUNT=50 &I=50 &J=50 &CRS=EPSG%3A4326 &STYLES &WIDTH=101 &HEIGHT=101 &BBOX=6919511.668971639%2C1779979.5230483634%2C6921441.703935839%2C1781909.558012564   And this error shows:  Refused to display 'http://localhost:8080/geoserver/sierakow/wms?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetFeatureInfo&FORMAT=image%2Fpng&TRANSPARENT=true&QUERY_LAYERS=sierakow%3Ajeziora&LAYERS=sierakow%3Ajeziora&INFO_FORMAT=text%2Fplain&FEATURE_COUNT=50&I=50&J=50&CRS=EPSG%3A4326&STYLES&WIDTH=101&HEIGHT=101&BBOX=6918701.436880034%2C1786965.867550262%2C6920631.4718442345%2C1788895.9025144626' in a frame because it set 'X-Frame-Options' to 'sameorigin'.   I will be greatful for every tips how to do that :)


Lyx IEEEtran template copyright overlaps text, authors not appearing

How do you make certain that the copyright and publisher id mark are correctly located at the bottom of an IEEEtran template Lyx document when rendered as PDF?  I've tried a couple of suggestions but no matter what it always appears to overlap with the text of the document at the bottom of page 1 (see first image).  Also, although it specifies in the template that your name and paper title will appear next to the name of the journal it doesn't render in the pdf even for the example that comes with a fresh install of Lyx.   How do you get the authors and paper title to appear with the journal title in the upper left corner of the pdf? (see 2nd image).  issue with copyright overlapping and author names as programmed in the Lyx example that do not show in the pdf in the upper left corner with the journal name:      Here's some suggestions I attempted but none worked:         (see publisher ID mark)


What is an intuitive explanation for the fact that the remainder of a Taylor polynomial has this equivalency? Why is z necessarily between x and c? Why does such a value for z exist in the first place?


Scaling column widths with multicolumn and tabularx

I've used the following code to create a table. This is roughly what I want, and it looked close enough with a different page size.   Now with a new page size, the cells in the bottom right are too narrow. I need each of them to each have width = 1/8 of the overall table width.   Is there a better way to scale them according to a fraction of the page size?  \documentclass[letterpaper,10pt,english]{article} \usepackage{tabularx} \newcolumntype{Y}{>{\centering\arraybackslash}X}  \title{My Awesome Table} \author{Kyle Gregory} \begin{document} \pagenumbering{arabic}     \maketitle     \begin{tabularx}{\textwidth}{| *8{Y} *8{Y} |}         \multicolumn{1}{l}{\tiny $_{31}$} & \multicolumn{14}{Y}{ } & \multicolumn{1}{r}{\tiny $_{24}$} \\         \hline         \multicolumn{16}{| c |}{Reserved} \\         \hline         \multicolumn{16}{| c |}{\tiny N/A}  \\         \hline     \end{tabularx}     \begin{tabularx}{\textwidth}{| *8{Y} *8{Y} |}         \multicolumn{1}{l}{\tiny $_{23}$} & \multicolumn{14}{Y}{ } & \multicolumn{1}{r}{\tiny $_{16}$} \\         \hline         \multicolumn{16}{| c |}{Reserved} \\         \hline         \multicolumn{16}{| c |}{\tiny N/A}  \\         \hline     \end{tabularx}     \begin{tabularx}{\textwidth}{| *8{Y} *8{Y} |}         \multicolumn{1}{l}{\tiny $_{15}$} & \multicolumn{14}{Y}{ } & \multicolumn{1}{r}{\tiny $_8$} \\         \hline         \multicolumn{16}{| c |}{Reserved} \\         \hline         \multicolumn{16}{| c |}{\tiny N/A}  \\         \hline     \end{tabularx}     \begin{tabularx}{\textwidth}{| *8{Y} |}         \multicolumn{1}{l}{\tiny $_7$} & \multicolumn{6}{Y}{ } & \multicolumn{1}{r}{\tiny $_0$} \\         \hline         \multicolumn{4}{| Y |}{Reserved} & \multicolumn{1}{c |}{XPPS} & \multicolumn{1}{c |}{SROL} & \multicolumn{1}{c |}{ROG} & \multicolumn{1}{c |}{FRWL}  \\         \hline         \multicolumn{4}{| Y |}{\tiny N/A} & \multicolumn{1}{c |}{\tiny R/W (0)} & \multicolumn{1}{c |}{\tiny R (0)} & \multicolumn{1}{c |}{\tiny R (0)} & \multicolumn{1}{c |}{\tiny R (0)} \\         \hline     \end{tabularx} \end{document}   Column type Y is defined as follows. I tried setting all of the columns as type Y, but I found that it would scale the \multicolumn{4} cells to be the same width as a single cell.  \newcolumntype{Y}{>{\centering\arraybackslash}X}   It produces the following output:


Can someone please let me know if I can reopen my old Gmail address?  I deleted it about 2 years ago. I need to use this email again as I posted comments on YouTube video that I need to look at again.  Very urgent. Can you advise what I need to do to retrieve my old email address? Your assistance would be appreciated.  If I cannot reuse this account, is it possible to at least view my old YouTube comments with the old Gmail address so I can see my comments?


Why is the first tag sometimes in the  tag of some questions?

I searched through both Gaming's Meta and here, and couldn't find an answer to this. I was reviewing my questions on  this morning and I noticed that in certain questions like , the <title> tag on that page shows:     metroid prime corruption - What is the effect of falling to your death in Metroid Prime 3? - Gaming - Stack Exchange   So it's like the first tag (s/-/ /g) is prepended to the question title to make up the <title> tag. Why is this? Because it happens , and , but it   .  What is causing this behavior and where can I read more about it?  EDIT: Now with Freehand Everything: