How I can to create a list with enumerate 2 by 2? e.g.  1. ... 3. ... 5. ... ...   In general, How I can create a step-by-step list? Is it possible?
How can I skip every even item in the enumerate environment without having to continually type \setcounter{enumi}{5}? I am still learning to program macros, so I spologize if this is a ridiculously easy question.   Just to be clear, I would like something like   1. *Something.* 3. *Somthing else.* 5. *A third something.*  ...As opposed to   1. Something.  2. A second something.  3. A tertiary Something.
Fire (at, on, in, to) target How to correctly choose the preposition in "fire (at, on, in, to) target"? So I am currently making a minecraft custom map (for 1.9). I want to make the player "say" something using /tellraw commands. I did figure out how to make the player name come up using /say commands, but still have no idea how to do it using the /tellraw command.  How do I do that? Elegant proofs that similar matrices have the same characteristic polynomial? I've seen the full proof of the Triangle Inequality  \begin{equation*} |x+y|\le|x|+|y|.  \end{equation*} However, I haven't seen the proof of the reverse triangle inequality:  \begin{equation*} ||x|-|y||\le|x-y|. \end{equation*} Would you please prove this using only the Triangle Inequality above?  Thank you very much. I prefer light windows with dark menu bar as in High Sierra. However, it seems I can only choose all-dark or all-light in Mojave now. Are there any way to hybrid or customize it? I've tried to install Ubuntu on a VMWare Virtual Machine, but it never gets past the  bootloader :  ISOLINUX 4.01 debian-20100714 ETCD Copyright (C) 1994-2010 H. Peter Anvin et al No DEFAULT or UI configuration directive found! boot: _   I've also tried to burn this .iso image to a CD and go from therem but I got the same problem.  Some more details :   VMWare Server 2.0.2 Build 203138 on Windows 2008 R2 ubuntu-10.10-desktop-i386.iso image used (downloaded yesterday evening) which vectors are perpendicular to each other? which vectors are perpendicular to each other?  $\vec a = (1, -2, 3)$, $\vec b = (5, 4, 1)$, $\vec c = (1, 0, -5)$  Do i just take the dot product of 2 of them. If the dot product they are at $90^\circ$? But how do i know if there perpendicular? Reputation misaligned in new topbar Been looking to pivot rows (progress_check) into columns check 1, check 2 etc... No sum or totals required, just to display the results hopefully... Can anyone help, Thanks Ad Why are my textures pink? Optimization when Cost Function Slow to Evaluate Why does the light side of the moon appear not to line up correctly with the evening sun? When to use a hyphen to coin a new word and when to omit a hyphen? Someone has asked for answer to these topics. However, I still want someone to provide me with simple and universal answers. I recently read a sentence from the English-speaking person. It is in an article. It is, ' The available options for mitigating pad cratering are not universally effective (see link below), but they may be helpful on a case by case basis until more crack resistant laminates are developed and become available.  '  If I am to write this, I will use 'a case-by-case basis until more crack-resistant laminates'   Can anyone tell me when to use a hyphen to coin a new word? How to make all polygons into triangles How to create a progress bar? References in externalized pgfplots I was writing on an document with a lot of pgfplots in it. Because of the memory limitation in LaTeX and in order to save some compiling time I tried out the externalize command. With most of the plots it perfectly worked out. But when I use the \ref command, namely \ref{&lt;legendname&gt;} the legend gets lost and instead there is a ??.  I think this question in a way is similar to  and . But no answer to these questions could solve my problem. Even the use of xr and zref packages showed no effect.  Am I just missing something?    MWE of the maindocument:  \documentclass{article} \usepackage{zref-user} \usepackage{xr-hyper} \usepackage{pgfplots} \usetikzlibrary{pgfplots.groupplots} \usepgfplotslibrary{external}  \tikzexternalize \externaldocument{part1}  \begin{document} \input{part1} \end{document}     With part1.tex looking like this:  \begin{tikzpicture}     \begin{groupplot}[       group style= {  columns=3,xlabels at=edge bottom,                 y descriptions at=edge left,                 horizontal sep=2cm,group name=plots},     width=0.4\textwidth,     xtick=data,     legend columns=3]     \nextgroupplot[xlabel=site 1,legend to name=grouplegend]     \addplot coordinates {(1,20)(2,23)(3,24.5)};     \addlegendentry {AaAaA,BbBbB,CcCcC}%     \nextgroupplot[xlabel=site 2]     \addplot coordinates {(1,14)(2,16)(3,17)};     \nextgroupplot[xlabel=site 3]     \addplot coordinates {(1,10)(2,11.5)(3,12.25)};     \end{groupplot}   % Legend     \node at (plots c2r1.north) [anchor=south] {\ref{grouplegend}}; \end{tikzpicture}     I'm writing with MikTeX 2.9 and the latest updates of the packages used. For compiling I used the command pdflatex -enable-write18 &lt;file name&gt;.  I hope the MWE is short enough ;) and some knows how to solve this problem. How to disable autorefresh in snap Is it possible to disable autorefresh in snap? This  says that Snaps are updated automatically in the background to the latest version, every day. Some snaps (e.g. vlc) are built daily, and it makes no sense to install them every day. Is there a way to opt out of Alexa rankings or prevent them from gathering data about my site? My competitor is using Alexa to see what I am doing. I need to get stop Alexa from including my sites in their rankings. How can I do so?   Is it possible to deny access to any visitor with the Alexa toolbar and deny access to Alexa bot requests? Prove that "injective function $f:X\to Y$ exists" and "surjective function $g:Y\to X$ exists" is logically equivalent. Prove that   injective function $f:X\to Y$ exists surjective function $g:Y\to X$ exists   is equivalent.$(x,y\neq \emptyset)$   My approach  First,prove left to right.  If injective function $f:X\to Y$ exists, a set A can be defined like this. $$A=\{f(x):x\in X\}$$ then it is sure that $A\subset Y$, and $|A|=|X|$  And, if we define function $g$ like $$g(y)=\begin{cases}x &amp; \text{if $y\in A$ and } f(x)=y,\\x_0&amp; \text{if }y\notin A.\end{cases}$$ ($x_0$ is a fixed element of $X$)  Then, $g$ is a surjective function, so surjective function $g:Y\to X$ exists.  Now,prove right to left.  If surjective function $g:Y\to X$ exists, $\forall x \in X$, we can select a element $y\in Y$ that $g(y)=x$, which is clear that we can pick a different $y\in Y$ for $\forall x \in X$  if we define function $f$ as $f(x)=\text{one element in Y that g(that element)=$x$}$, f is a injective function, so injective function $f:X\to Y$ exists.    But, I am not sure that my approach is right, especially on proving right to left. Please check whether my approach is right, ways to improve it,  and some other ways of proving this question. When working with an image in Photoshop, I'd like to have a simple keyboard shortcut, like in , that automatically does:   Export > Export As or Export > Save For Web  Resize to biggest dimension = 600px (either width or height) Add suffix _600.jpg to filename   How to do that?  I'm not sure how to edit a recorded macro to do that (add the suffix and choose 600px for the biggest dimension).  Example: you open myphoto.png, you press F6 and then you automatically get myphoto_600.jpg.