Recent and pinned files and folders do not open when selected from taskbar icon right-click menu Background  Pinning applications to the taskbar is working fine. When you right-click on a taskbar icon, you see recently-opened and pinned files and folders (e.g. I have Downloads pinned to the File Explorer taskbar icon)  The Problem  Clicking on one of these recent or pinned items should open it, but nothing happens when I click it. Clicking the taskbar icon does open the program.  What I've Tried:   Removing the pinned item, re-opening it, and re-pinning the recent file Recent items and pinned items 8 different taskbar icons, both pinned and recent items
Taskbar > File Explorer > Context Menu failing me So I have the latest version of Windows 10, and this is a new PC.  File Explorer is in the taskbar.  When I open the context menu (right-click) on it, I get the list of folders as seen in the picture.  When I right click on any of them, I get the blank black box you see in the picture.  If I click on any of the folders, such as Downloads or Update.  Nothing happens.  They don't open.  The only way to use it is to click on the actual File Explorer icon and then navigate from there.  I've tried uninstalling things (not that I have much installed since it's a fresh install) and I've tried scans, etc.  This only happens with File Explorer.  Everything else works fine.  I can't figure it out.
He who must not be named? (aka Anyone can ping everyone in chat) For some or other reason, typing @ᔕᖺᘎᕊ in a chat room pings everyone who's been in that chat room for the last 7 days...    Seems to work in all chat rooms (I only tested 2 as I don't want to upset too many people...)  How should we proceed? Get number of unread sms Computing the Galois group of $x^4+ax^2+b \in \mathbb{Q}[x] $ I want to compute the Galois group of some polynomials, but I want to see some examples first. For example this proposition could be helpful. I don't know how to prove it &lt;.&lt;  Let's consider a polynomial $f(x)= x^4+ax^2+b \in \mathbb{Z} $. Let $ \pm\alpha , \pm\beta$ denote the roots of $f(x)$. Note that $f$ is irreducible iff $\alpha^2, \alpha\pm\beta \notin \mathbb{Q}$. So let's suppose that $f(x)$ is irreducible. Let's denote $G$ the galois group of $f$ (the Galois group of the splitting field $\mathbb{Q}(\alpha,\beta)/\mathbb{Q}$)  $i)$ $G\cong V$ the Klein 4-group iff $\alpha\beta \in \mathbb{Q}$  $ii)$ $G\cong \mathbb{Z}_4$ iff $\mathbb{Q}(\alpha\beta)=\mathbb{Q}(\alpha^2)$  $iii)$ $G\cong D_8$ the dihedral group of order 8, iff $\alpha\beta \notin \mathbb{Q}(\alpha^2)$  I need help with the proofs of this propositions... Well I'm very lost with the computation of Galois group, some care must be exercised, I don't have it. For example I know that Galois group acts transitively, in the sense that $u\in K/F$ a galois extension, the other roots of the minimal polynomial of $m_u(x)\in F[x]$ are precisely the elements $ \sigma(u)$ , where $\sigma \in Gal(K/F)$. And clearly any automorphism, is determined by only the value of a basis. In this case we are working on $\mathbb{Q}(\alpha,\beta)$, so I have to know the values of both. But I have to respect the algebraic relations involving $\alpha , \beta$ I proved that in $i),ii)$ $\mathbb{Q}(\alpha,\beta) = \mathbb{Q}(\alpha) $ So I have to know the values on $\alpha$.   My first question is: If in both cases $i),ii)$, I have an extension of degree 4 (so $|G|=4$) I have to map $\alpha$ to determine the automorphism, but I have also to map $\alpha$ to all of it's four roots. Why the galois group in this case are different?  My second question is about $iii)$ I have no idea How to attack it. Does the penalty to movement speed while grappling stack if you grapple two opponents? In 5e, a player who is grappling has their movement speed halved. However, a player with two hands can grapple two opponents.  As the wording seems to indicate that the movement speed penalty applies due to the grappling status, does that mean that a player grappling two opponents is doubly penalized?  If so, how would it apply: is your speed reduced to 0 ([1 - 0.5] - 0.5), or a quarter of your regular speed ([1 / 2] / 2)? How to execute code after html form reset with jquery? What is a concise function that formats a (String) decimal into a currency format in Apex? After 4 years of being a Mac user, there is only one thing that I still miss from the Windows world, and that is being able to switch with a single keystroke between all open windows in the computer.  What is the best app or utility, free or not, for accomplishing that?  I've used , but I never was completely satisfied with it. It's a bit slow and the switcher UI is not very pretty.  Do you know any alternative?    EDIT (2016): This question keeps getting views and upvotes after 6 years. When I asked this question in 2010 I was still transitioning from being a Windows user. Eventually, I got used to Mac OS X UI and nowadays I don't use any third party utility for managing app windows, just Mission Control and the native keyboard shortcuts. So, although this question is no longer relevant for me I hope it is useful to new Mac users making the switch (Including this comment). First Order Time-Variant System : Picard Method I looking at a time variant first order system. I am trying to prove that a sequence of functions $x^{[k]}(t)$ generated using Picard iterations converges uniformly on some interval $[0,T]$.  Given:  $\dot{x}(t)=A(t)x(t)$ where $x(0)=x_0$  $x(t)=x∈R^n$ where $A(t)$ is a $n×n$ matrix  Assume there exists $M$ such that $||A(t)||\le M$ for all $t\ge 0$ and that $A(t)$ is a piecewise continuous function. Show that, for any $T &gt; 0$, a solution exists in the interval $[0,T]$.  I know that $x(t)=x_0+\int^t_0A(τ)x(τ) dτ$ must be satisfied if the solution does indeed exist.  I am supposed to use Picard iterations to prove this, which I am not familiar with yet. But I know that they are of the form: $x^{[k+1]}=x_0+\int^t_0A(τ)x^{[k]}(τ) dτ$. Where $x^{[0]}(t)=x_0$  Can I use the standard Picard proof to prove this or do I need to start somewhere else?  I was also asked to show that this method satisfies  $|x^{[k+1]}(t)-x^{[k]}(t)|\le |x_0| $$\frac{π^{k+1}(t)}{(k+1)!}$ where $π(t)=\int^t_0||A(τ)||dτ$.  I have no idea where to start with this, but hopefully it will become clearer once I finish the first part. Which is correct: "the below information" or "the information below"? I frequently see statements that refer to something later in the text that use a phrase such as "the below information". Is it more correct instead to say "the information below" (or "the following information")? Title tag different from title appearing in Google? DEF file syntax error in visual studio 2012 Underline my name in the bibliography For several documents I'm preparing, I need to highlight (or underline) occurences of my name within the bibliography.   Is there an easy way of doing this? Are intermediate rings of finitely generated ring extensions also finitely generated? Permissions problems with /var/www/html and my own home directory for a website document root I'm trying to not give 777 permission in my /var/www/html folder, but I want to edit my files without sudo. So I though in create a symlink of a folder in my home directory within /var/www/html. I created it using sudo ln -sT /home/andre/www/moodle/ moodle , and the ls -la output is this:  andre@andre-270E5G:/var/www/html$ ls -la total 8 drwxr-xr-x 2 root root 4096 Mai  4 10:20 . drwxr-xr-x 4 root root 4096 Abr 29 14:29 .. lrwxrwxrwx 1 root root   23 Mai  4 10:20 moodle -&gt; /home/andre/www/moodle/   So, my moodle folder has read, write and execute permissions for everyone, and thats not what I want. I used the command sudo chmod -R 775 moodle/ trying to change it, but it stayed with read, write and execute permissions to all. I tried the same with the moodle folder in /home/andre/www/moodle, but it stayed the same. The output of ls -la in /home/andre/www/ is:  andre@andre-270E5G:~/www$ ls -la total 28 drwxrwxr-x  3 andre andre  4096 Mai  4 10:02 . drwx------ 49 andre andre 20480 Mai  4 10:01 .. drwxrwxr-x 41 andre andre  4096 Mai  4 10:02 moodle   So the folder moodle in /home/andre/www/ has the permissions I want.  As an additional problem, when I access localhost/moodle I get 403 Forbidden error.  What am I doing wrong here? Very new player here. Looking at the stat block of a goblin: for a shortbow attack it says +4 to hit and the goblin has a Dex modifier of +2.   Does this mean I add 6 to the d20 roll or just the 4 and ignore the Dex modifier?  Same with using Stealth. It says Skills: Stealth +6. So would I take 6 and add +2 of the Dex modifier or just add 6 to the d20 of the Stealth check roll?  Thank you! How can I generate a sin wave with power law noise? Can we get wordpress.stackexchange.com added to the list of off-topic redirection sites? I'm noticing a lot of WordPress questions being asked on Stack Overflow lately. I can't flag these to be moved to wordpress.stackexchange.com because it's not in the list:    Can it be added? Are there any other Stack Exchange sites worth adding? Is there an open dense set $S \subset [0,1]$ such that $m(S)<1$? $m$ is the Lebesgue measure. I was thinking that: $\Bbb Q$ is dense and $m(\Bbb Q)=0&lt;1$ but it fails to be open, but maybe I could construct an open set from this fact, or also using that $(0,1)$ is a dense and open subset but $m(0,1)=1$.   Any hints or ideas will be very appreciated. Thanks. A few weeks back I was using std::ifstream to read in some files and it was failing immediately on open because the file was larger than 4GB. At the time I couldnt find a decent answer as to why it was limited to 32 bit files sizes, so I wrote my own using native OS API.  So, my question then: Is there a way to handle files greater than 4GB in size using std::ifstream/std::ostream (IE: standard c++)  EDIT: Using the STL implementation from the VC 9 compiler (Visual Studio 2008).  EDIT2: Surely there has to be standard way to support file sizes larger than 4GB. Include the "People Reached" and "Helpful Flags (count)" data in SEDE I know the new profile design hasn't been updated for  on the network yet, so maybe this is a bit too early. Nonetheless, please include the &quot;People Reached&quot; data in  at your earliest convenience. Also, I was just made aware that users helpful flag counts are now publicly displayed on their  towards the top-right, underneath the people reached stat. So please include this data in SEDE as well.