Solving equations involving x↑↑3
Solving $x^{x^x}=c$ with Lambert's W function
register_nav_menus() won't register menus Please help with menu registeration:  I have followed this guide (http://codex.wordpress.org/Navigation_Menus) step by step.  Added the following code to functions.php:  function register_my_menus() {   register_nav_menus(     array('header-menu' =&gt; __( 'Header Menu' ) )   ); }  add_action( 'init', 'register_my_menus' );   But the guide says that this will make the menu appear in the Appearance -> Menus admin screen in the "Theme Locations" box as "Header Menu".  When I go to Appearance -> Menus everything is greyed out and there is no option of "Theme Locations" How does one change the frame size and colors in the frame option of titlesec as in MWE? Accepted answer appearing below top voted On , sorted by votes, the accepted answer is #3 in order of votes.  It appears as number 3 in the list as well. Is this new behavior intended? Unknown Syntax Error in Code So, I am following a , and it is using Python code to create an audio visualizer in Blender. Now, I've always been a coding geek, but I don't actually know Python. I've taken a few shots at it but overall, I don't know Python, however, I can read and understand the code because I know basic programming concepts. Now, I'm following this tutorial as closely as I can (the tutorial does not provide code to copy and paste) and I am getting a syntax error. As far as I can tell, there is no syntax error. The line of code (specified by the error message) appears perfect. This line of code is supposed to set the 3D cursor to the active object's origin. Here's the catch: if I run that exact same line of code in the console, it executes just fine. So here's the error message I get:  File "C:\Me\Blender\Blender Projects\audio visualisation.blend\AudioVisualizer", line 17 bpy.context.scene.cursor_location = bpy.context.active_object.location    ^ SyntaxError: invalid syntax location: &lt;unknown location&gt;:-1   It tells me to look in the console for error message, but the console doesn't output anything.    Thanks!  EDIT: Alright. I've tried all the examples and all the procedures that have been suggested by you guys, but it keeps feeding me errors. According to the console, one of the problems it is spitting out is in C:\Program Files\Blender Foundation\Blender\2.74\scripts\modules\bpy\ops.py. This makes me think there is a bug in the API that is causing one of the many errors. EDIT: Here are the error messages I get for my code. Original Code:  Error:   File "C:\Gannon\Blender\Blender Projects\audio visualisation.blend\Audi o Visualizer", line 35     bpy.ops.graph.sound_bake(filepath="C:\Gannon\Blender\Sounds\Music\Batty McFa dden.mp3", low=i*step high=i*step+step                           ^ SyntaxError: invalid syntax    gandalf3's Code and zeffii's Code are essentially the same with alternative formatting which changes the line numbers where the error occurs.  Error: Unsupported audio format  Traceback (most recent call last):   File "C:\Gannon\Blender\Blender Projects\audio visualisation.blend\Audio Visua lizer", line 42, in &lt;module&gt;   File "C:\Gannon\Blender\Blender Projects\audio visualisation.blend\Audio Visua lizer", line 35, in spiral   File "C:\Program Files\Blender Foundation\Blender\2.74\scripts\modules\bpy\ops .py", line 189, in __call__     ret = op_call(self.idname_py(), None, kw) RuntimeError: Error: Unsupported audio format Access POST values in Symfony2 request object An integration question to be solved without using differentiation under the integral sign. Are {/bin, /lib, /sbin} symlinks into /usr in Ubuntu? I do not have access to an Ubuntu system or chroot. I was hoping if someone could tell me if the  is accurate in saying:     For Quantal, merged /usr should be supported. On new systems installer should create {/bin, /lib, /sbin} symlinks into /usr. Bibliography style elsarticle-num-names with DOI and hyperlinks but no explicit url I prepared my article with elsarticle, using \citep &amp; \citet throughout. I originally used apalike bibliographystyle but now need to change it to elsarticle-num-names for citation formatting requirements (see point #2 below).  Now, I am attempting to make 2 changes:     add DOIs to the bibliography change reference style to [1] for \citep and Author et al. [1] for \citet.   I want to keep hyperref and do not want explicit URLs (only DOIs) but cannot make this work!  Thank you for any help you might have!  MWE:  \documentclass[preprint,12pt]{elsarticle} %\usepackage{hyperref}  \journal{Test Journal} \begin{document} \begin{frontmatter} \title{The Title} \author{Prof. Big Ol' Wanker} \address{123 Happy Lane} \begin{abstract} TEXT \end{abstract} \begin{keyword} keyword 1 \sep keyword 2 \sep keyword 3 \end{keyword} \end{frontmatter}  \section{SECTION1TEST} \noindent cite: \cite{Richards1931} \\ citep: \citep{Richards1931} \\ citet: \citet{Richards1931} \\  \bibliography{library} \bibliographystyle{elsarticle-num-names}  \end{document}   Here is the reference for Richards1931 from my library.bib file:    @article{Richards1931, author = {Richards, LA}, doi = {10.1063/1.1745010}, file = {:D$\backslash$:/Papers/Richards - 1931 - Capillary Conduction of Liquids Through Porous Mediums - Journal of Applied Physics.pdf:pdf}, issn = {01486349}, journal = {Journal of Applied Physics}, pages = {318}, title = {{Capillary Conduction of Liquids Through Porous Mediums}}, url = {http://scitation.aip.org/content/aip/journal/jap/1/5/10.1063/1.1745010}, volume = {1}, year = {1931} }   without hyperref (wanted hyperlinks present, DOI displays correctly, but unwanted URL is present):    with hyperref (hyperlinks not present, DOI displays incorrectly, and unwanted URL is present): Uncountable chain of subsets of $\mathbb N$ I often cook fries in a skillet. I put about 1/4 cup vegetable oil into a large skillet and heat on high, then I toss in some frozen fries.   As soon as I toss them in there is an explosion of grease that makes a huge mess. After it simmers down though, I can cook the fries without spilling anymore grease.  Is there anyway to avoid the initial uproar? How do I see all foreign keys to a table or column? In MySQL, how do I get a list of all foreign key constraints pointing to a particular table? a particular column? This is the same thing as , but for MySQL. I got  question in review. First sentence is:     I know there is a  question, but no answers.   And indeed the two questions are virtually identical. I started to flag as duplicate - but the original question had no answer at the time, so it wouldn't be correct and apparently . (I didn't go so far as to try to submit the flag).  What is the proper action here? How do we want such a question to be handled? Should both (or more) questions stay open indefinitely until either is answered and somebody gets the good idea to do the duplicate linking?   As the new question is essentially a bump to the front page (perhaps with re-tagging), especially in the case where the OP knows that a previous question exist, perhaps something should be done to enable bumping re-emphasizing without writing the new question.  As I wrote this,  actually got an answer. So the old one should now be closed as a duplicate of the new - but my question remains for the case where all known/found duplicate questions have no answer?  Ironically, just before asking this, the "Questions that may already have your answer" gave me ... (Although the suggestion has no answer). So it has been asked before - the comment there even suggest the ability to re-emphasize. How can I get LaTeX to warn about unreferenced figures and unused labels in general? When writing documents, I consider it to be necessary that all figures and tables are referenced (\ref) in the text, whether or not I've remembered to \label them. LaTeX does not currently warn if a figure or table is not referenced. Is there a way to ensure that this is flagged up as a warning?  Note that I am specifically concerned about figures and tables, not chapter or section headings; it will be no good looking just at \labels that don't have an associated \ref.  In other words, it should report boo and not report bla in the following MWE:  \documentclass{article} \begin{document} \section{BLA}\label{bla} \section{BOO}\label{boo} In Section~\ref{bla} we do something. \end{document} Can I travel to UK with my Italian national daughter and husband with my permesso di soggiorno? I have an Italian permesso di soggiorno and I want to join my husband in the UK. My baby and my husband are Italian nationals. Can I travel with them with only the permesso di soggiorno? The only things I've found so far are a cart method (which ceased working in 1.6), a dispenser method (utilizing the decay on dropped items, but this requires occasional feeding), and a binary counter (which won't work for a single input but rather a fluctuating one).  I want to have a circuit that when I apply an input signal, the output signal doesn't change for 2 to 5 minutes.  When the input turns off, I again want a 2 to 5 minute delay.  I could accomplish this with (roughly) 240 to 600 redstone repeaters, but this is far in excess of being useful.  The only method I can think of, but would require a XOR gate (on the button-input and final output) to start and stop a clock attached to a binary counter.  While I can make room for a device of this size, I was hoping for something simpler. Mesh imported to Unity is inside out Will my device work with Ubuntu? I have a device on which I would like to install Ubuntu. How do I find out if Ubuntu will work on it? Let $(\Omega, \mathcal F,P)$ be a probability spaces and $H$ be a Hilbert space. By a random operator $A$ from $H$ to $H$ we mean a linear continuous mapping from $H$ into the Frechet space $L_0^H (\Omega, \mathcal F,P)$ of all $H$-valued random variables. My question is: How Can we define $|A|$ and the adjoint $A^*$? Why can't I use switch statement on a String? How do I change the default application for unknown file types? Ever since installing Bless Hex Editor, all unknown files and text files automatically open with Bless instead of gedit. How do I change it back? I don't want to have to manually associate files with gedit, I just want gedit to be the default if there's no other application set up to open the file.  Solution: modify ~/.local/share/applications/mimeapps.list  [Default Applications]  - text/plain=bless.desktop - application/octet-stream=bless.desktop + application/octet-stream=gedit.desktop