10.72.2 Greatest hits from previous weeks

10.72.2.1 How to write a function (piecewise) with bracket outside?
10.72.2.2 How to add an empty line between paragraphs?
10.72.2.3 TeXnicCenter & Adobe Reader DC
10.72.2.4 What is the "correct" way of embedding text into math mode?
10.72.2.5 Remove ugly borders around clickable cross-references and hyperlinks
10.72.2.6 Real number symbol (UTF-8: a^\204\235) in XeTeX
10.72.2.7 How can I split an equation over two (or more) lines
10.72.2.1 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 217
answered by Ant https://tex.stackexchange.com/landing/r/digest?cta=user&id=6984 Score of 266
10.72.2.2 How to add an empty line between paragraphs?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=135134

I have two sections which I'd like to separate by an empty line. Every time I press Enter, LyX removes that empty line between paragraphs. How do I prevent this? 
[spacing] [lyx]
 
asked by goldisfine https://tex.stackexchange.com/landing/r/digest?cta=user&id=37301 Score of 167
answered by Werner https://tex.stackexchange.com/landing/r/digest?cta=user&id=5764 Score of 181
10.72.2.3 TeXnicCenter & Adobe Reader DC

https://tex.stackexchange.com/landing/r/digest?cta=question&id=250472

How to configure TeXnicCenter to work with Adobe Reader DC? When I building and view current file .tex the following error "Can not execute the command" shows up and the PDF is not generated. 
If ... 
[pdf] [texniccenter] [adobe]
 
asked by Walter Silva https://tex.stackexchange.com/landing/r/digest?cta=user&id=80192 Score of 65
answered by JiAo\231A~\[DiscretionaryHyphen] ChmelA~\[DiscretionaryHyphen]k https://tex.stackexchange.com/landing/r/digest?cta=user&id=82051 Score of 87
10.72.2.4 What is the "correct" way of embedding text into math mode?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=3415

Lets say I have something like: 
\[ Let x = number of cats \] 
(This is a contrived example, but pretend we are actually inside a long align environment block...) "Let" and "number of cats" need to ... 
[math-mode]
 
asked by Billy ONeal https://tex.stackexchange.com/landing/r/digest?cta=user&id=192 Score of 296
10.72.2.5 Remove ugly borders around clickable cross-references and hyperlinks

https://tex.stackexchange.com/landing/r/digest?cta=question&id=823

I know that I can use hyperref to make cross-references and hyperlinks clickable.  That makes the clickable areas outlined in fluorescent green, however.  How can I make the green boxes go away? 
[hyperref] [color] [boxes] [links]
 
asked by Vebjorn Ljosa https://tex.stackexchange.com/landing/r/digest?cta=user&id=35 Score of 1149
answered by meep.meep https://tex.stackexchange.com/landing/r/digest?cta=user&id=3735 Score of 1094
10.72.2.6 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 Score of 177
answered by lvaneesbeeck https://tex.stackexchange.com/landing/r/digest?cta=user&id=24686 Score of 12
10.72.2.7 How can I split an equation over two (or more) lines

https://tex.stackexchange.com/landing/r/digest?cta=question&id=3782

I am having the following equation: 
\begin{equation} 
Q(\lambda,\hat{\lambda}) = -\frac{1}{2} P(O \mid \lambda ) \sum_s \sum_m \sum_t \gamma_m^{(s)} (t) \left( n \log(2 \pi ) + \log \left| C_m^{(s)} ... 
[math-mode] [equations] [line-breaking] [breqn]
 
asked by Peter Smit https://tex.stackexchange.com/landing/r/digest?cta=user&id=459 Score of 360
answered by Will Robertson https://tex.stackexchange.com/landing/r/digest?cta=user&id=179 Score of 224