11.22.2 Greatest hits from previous weeks

11.22.2.1 What are all the font styles I can use in math mode?
11.22.2.2 Forcing linebreaks in \url
11.22.2.3 Using \footnote in a figure's \caption
11.22.2.4 Why does \\ not return a new line in an equation?
11.22.2.5 Displaying the binomial coefficient symbol in math mode
11.22.2.6 Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?
11.22.2.7 How to add a forced line break inside a table cell
11.22.2.1 What are all the font styles I can use in math mode?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=58098

As can be seen in above picture, there are lots of fonts or font styles that can be used in math mode. 
What are all the fonts or font styles I can use in math mode, and which packages are required in ... 
[fonts] [math-mode] [big-list] [latin-modern] [computer-modern]
 
asked by doncherry https://tex.stackexchange.com/landing/r/digest?cta=user&id=4012 Score of 628
answered by Christian https://tex.stackexchange.com/landing/r/digest?cta=user&id=13450 Score of 809
11.22.2.2 Forcing linebreaks in \url

https://tex.stackexchange.com/landing/r/digest?cta=question&id=3033

This question led to a new package: 
xurl 
I wish to typeset some relatively long URLs in a piece of text, and when I use \url{..}, the resulting text does not respect the margin boundaries that govern ... 
[line-breaking] [urls]
 
asked by Suresh https://tex.stackexchange.com/landing/r/digest?cta=user&id=103 Score of 367
answered by Suresh https://tex.stackexchange.com/landing/r/digest?cta=user&id=103 Score of 267
11.22.2.3 Using \footnote in a figure's \caption

https://tex.stackexchange.com/landing/r/digest?cta=question&id=10181

Maybe this is an easy one, but I struggled with this now too long :) 
I want to have a footnote in a caption of a figure, see the example. 
\begin{figure}[!ht] 
\caption{a figure caption\footnote{... 
[floats] [footnotes] [captions]
 
asked by Matten https://tex.stackexchange.com/landing/r/digest?cta=user&id=1125 Score of 335
answered by Dee https://tex.stackexchange.com/landing/r/digest?cta=user&id=16059 Score of 246
11.22.2.4 Why does \\ not return a new line in an equation?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=194236

\begin{equation*}\label{eq:pareto mle2} 
A_0 = \frac{1}{(\alpha+t_x)^{r+s+x}}{}_2F_1\left(r+s+x,x+1;r+s+x+1;\frac{\alpha-\beta}{\alpha + t_x} \right ) "\\\" <br> 
- \frac{1}{(\alpha+T)^{r+s+x}}{}... 
[equations] [line-breaking]
 
asked by user3714137 https://tex.stackexchange.com/landing/r/digest?cta=user&id=60029 Score of 122
answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 56
11.22.2.5 Displaying the binomial coefficient symbol in math mode

https://tex.stackexchange.com/landing/r/digest?cta=question&id=127707

The problem is caused by the symbol of binomial coefficient (symbol of Newton), often used in math: 
{N}\choose{k} 
In my document I have formula: 
$$ P(A) = \sum P(\{ (e_1,...,e_N) \})  =  {N}\choose{... 
[math-mode] [symbols]
 
asked by MC2DX https://tex.stackexchange.com/landing/r/digest?cta=user&id=21025 Score of 173
11.22.2.6 Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2369

When typing < or > in LaTeX and compiling with pdflatex, the less than and greater than symbols appear at upside down exclamation points. I'm not in math mode. 
[symbols] [punctuation] [font-encodings]
 
asked by biased_estimator https://tex.stackexchange.com/landing/r/digest?cta=user&id=996 Score of 331
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 300
11.22.2.7 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 937
answered by Bernard https://tex.stackexchange.com/landing/r/digest?cta=user&id=38908 Score of 760