7.82.2 Greatest hits from previous weeks

7.82.2.1 How can I split an equation over two (or more) lines
7.82.2.2 How can I get bold math symbols?
7.82.2.3 Math symbol question: Vertical bar for ''evaluated at ...''
7.82.2.4 Real number symbol (UTF-8: a^\204\235) in XeTeX
7.82.2.5 How to influence the position of float environments like figure and table in LaTeX?
7.82.2.6 Force figure placement in text
7.82.2.7 How to include SVG diagrams in LaTeX?
7.82.2.1 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=459 301 votes
answered by Will Robertson https://tex.stackexchange.com/landing/r/digest?cta=user&id=179 195 votes
7.82.2.2 How can I get bold math symbols?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=595

To make Latin-letter variables bold I can use e.g. \mathbf{a}, but while putting Greek letters or symbols such as \nabla inside \mathbf doesn't cause any errors or warnings, it also doesn't do ... 
[fonts] [math-mode] [symbols] [bold]
 
asked by Michael Underwood https://tex.stackexchange.com/landing/r/digest?cta=user&id=32 549 votes
answered by Mark Meckes https://tex.stackexchange.com/landing/r/digest?cta=user&id=206 464 votes
7.82.2.3 Math symbol question: Vertical bar for ''evaluated at ...''

https://tex.stackexchange.com/landing/r/digest?cta=question&id=40160

How do I insert the line "|" after the equation in LaTeX (see image below)? 
I'm using LyX so if you can point me to the symbol of that line is also OK. 
I don't know if this line has a proper name so ... 
[math-mode] [symbols] [lyx]
 
asked by rasgo https://tex.stackexchange.com/landing/r/digest?cta=user&id=10511 171 votes
7.82.2.4 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 164 votes
answered by lvaneesbeeck https://tex.stackexchange.com/landing/r/digest?cta=user&id=24686 11 votes
7.82.2.5 How to influence the position of float environments like figure and table in LaTeX?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=39017

How to influence the position of float environments like figure and table in LaTeX? 
This is a general question and should collect useful answers for all users. I hope we can use this as a reference 
[floats] [positioning]
 
asked by Marco Daniel https://tex.stackexchange.com/landing/r/digest?cta=user&id=5239 682 votes
answered by Frank Mittelbach https://tex.stackexchange.com/landing/r/digest?cta=user&id=10109 977 votes
7.82.2.6 Force figure placement in text

https://tex.stackexchange.com/landing/r/digest?cta=question&id=8625

I have a problem when a lot of figures are in question. Some figures tend to "fly around", that is, be a paragraph below, although I placed them before that paragraph. I use code: 
\begin{figure}[ht] 
\... 
[floats] [positioning] [captions]
 
asked by Marin https://tex.stackexchange.com/landing/r/digest?cta=user&id=2755 578 votes
answered by Juan A. Navarro https://tex.stackexchange.com/landing/r/digest?cta=user&id=169 705 votes
7.82.2.7 How to include SVG diagrams in LaTeX?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2099

I'm making all my diagrams in SVG format using Inkscape and then I export them to some other format (e.g. PDF, EPS or PNG). I wrote a short script that does this for me automatically, but I'd like to ... 
[graphics] [svg]
 
asked by Martin Tapankov https://tex.stackexchange.com/landing/r/digest?cta=user&id=711 641 votes
answered by Martin H https://tex.stackexchange.com/landing/r/digest?cta=user&id=632 350 votes