5.40.2 Greatest hits from previous weeks

5.40.2.1 The \bar and \overline commands

https://tex.stackexchange.com/landing/r/digest?cta=question&id=22100

I want to represent, say, the closure of a set or the extended reals, e.g., $\bar{\mathbb{R}}$ but unfortunately this creates a bar that is much too small (horizontally) and can barely be seen. On the  ... 
[stacking-symbols]
 

asked by 3Sphere https://tex.stackexchange.com/landing/r/digest?cta=user&id=6487 134 votes

answered by Danie Els https://tex.stackexchange.com/landing/r/digest?cta=user&id=1683 75 votes

5.40.2.2 Problem with compiling BibTex: "no \citation commands" error

https://tex.stackexchange.com/landing/r/digest?cta=question&id=18045

I'm really new to BibTex, I just wonder what is going wrong when I have this kind of error when I try to compile my bibliography file. 
I found no \citation commands---while reading file  ... 
[bibliographies] [bibtex]
 

asked by zfm https://tex.stackexchange.com/landing/r/digest?cta=user&id=3559 69 votes

answered by Spike https://tex.stackexchange.com/landing/r/digest?cta=user&id=5150 27 votes

5.40.2.3 Real number symbol (UTF-8: a^\204\235) in XeTeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=104274

How can I get the 'real number' sign (something like \mathbb{R} with the amssymb package in LaTeX) in XeTeX? 
[math-mode] [xetex] [symbols] [amsmath] [plain-tex]
 

asked by lvaneesbeeck https://tex.stackexchange.com/landing/r/digest?cta=user&id=24686 114 votes

answered by lvaneesbeeck https://tex.stackexchange.com/landing/r/digest?cta=user&id=24686 8 votes

5.40.2.4 Crop an inserted image?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=57418

I'm inserting an image with a simple: 
\includegraphics[height=5cm]{filename.png} 
This results in an image that maintains the aspect ratio, and so gives me something like 6cm width. I only really  ... 
[graphics] [crop]
 

asked by naught101 https://tex.stackexchange.com/landing/r/digest?cta=user&id=13192 197 votes

5.40.2.5 How to write 'A~\[Currency]' and other umlauts and accented letters in bibliography?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=57743

How to write in bibliography (package natbib) letter "a" with two dots above? Specially, I mean the word BirkhA~\[Currency]user. 
Is there a general rule or way how to write such umlauts or other accented letters  ... 
[bibtex] [accents] [characters]
 

asked by Laura https://tex.stackexchange.com/landing/r/digest?cta=user&id=14475 336 votes

answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 449 votes

5.40.2.6 Command for argmin or argmax?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=5223

How can you get the argmin or argmax in Latex? Two solutions I found are: 
\underset{x}{\operatorname{argmax}} 
\DeclareMathOperator*{\argmin}{arg\,min} 
Any other ideas? 
[1]  ... 
[math-mode] [symbols] [math-operators]
 

asked by Alejandro https://tex.stackexchange.com/landing/r/digest?cta=user&id=1128 206 votes

answered by Jan Hlavacek https://tex.stackexchange.com/landing/r/digest?cta=user&id=396 206 votes

5.40.2.7 What can I use to typeset MATLAB code in my document?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=75116

This question led to a new package: 
matlab-prettifier 
Does anybody have a quick and easy way to typeset some relatively long MATLAB code in the appendix? I looked up a few methods, and the  ... 
[listings] [highlighting] [matlab]
 

asked by suzu https://tex.stackexchange.com/landing/r/digest?cta=user&id=19279 97 votes