9.51.2 Greatest hits from previous weeks

9.51.2.1 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 masterthesis.... 
[bibliographies] [bibtex]
 

asked by zfm https://tex.stackexchange.com/landing/r/digest?cta=user&id=3559 Score of 112

answered by Spike https://tex.stackexchange.com/landing/r/digest?cta=user&id=5150 Score of 45

9.51.2.2 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 Score of 412

answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 564

9.51.2.3 How to write a function (piecewise) with bracket outside?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=32140

How to write this Piecewise function using LaTeX? 
I tried 
$ 
\begin{array}{cc} 
\{ & 
\begin{array}{cc} 
0 & x\leq 0 \\ 
\frac{100-x}{100} & 0\leq x\leq 100 \\ 
0 & ... 
[math-mode] [equations] [brackets]
 

asked by GarouDan https://tex.stackexchange.com/landing/r/digest?cta=user&id=5314 Score of 207

answered by Ant https://tex.stackexchange.com/landing/r/digest?cta=user&id=6984 Score of 257

9.51.2.4 How to add todo notes?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=9796

Is there a simple way to add todo notes to LaTeX documents ? 
I would like to have these notes in red in the generated pdf and a simple syntax to write them. 
[todonotes]
 

asked by aneuryzm https://tex.stackexchange.com/landing/r/digest?cta=user&id=3182 Score of 340

9.51.2.5 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 Score of 187

answered by Danie Els https://tex.stackexchange.com/landing/r/digest?cta=user&id=1683 Score of 103

9.51.2.6 How to add a forced line break inside a table cell

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2441

I have some text in a table and I want to add a forced line break. I want to insert a forced line break without having to specify the column width, i.e. something like the following: 
\begin{tabular}{|... 
[tables] [line-breaking]
 

asked by Denilson SA~\[DownExclamation] Maia https://tex.stackexchange.com/landing/r/digest?cta=user&id=375 Score of 871

answered by Bernard https://tex.stackexchange.com/landing/r/digest?cta=user&id=38908 Score of 693

9.51.2.7 Double line spacing

https://tex.stackexchange.com/landing/r/digest?cta=question&id=819

I would like to typeset a draft of my document with double linespacing so that my collaborators have space to write in their edits (with a pen).  How do I do it? 
[line-spacing] [setspace]
 

asked by Vebjorn Ljosa https://tex.stackexchange.com/landing/r/digest?cta=user&id=35 Score of 241

answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 176