11.54.2 Greatest hits from previous weeks

11.54.2.1 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 cidadao https://tex.stackexchange.com/landing/r/digest?cta=user&id=10511 Score of 203

answered by TorbjA~,rn T. https://tex.stackexchange.com/landing/r/digest?cta=user&id=586 Score of 75

11.54.2.2 How to type special/accented letters in LaTeX?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=8857

How to type these special letters from European languages in latex? 
A~\[Currency], A~(c), and L'? 
[symbols] [languages] [characters] [accents]
 

asked by user2918 https://tex.stackexchange.com/landing/r/digest?cta=user&id=2918 Score of 257

answered by Kit https://tex.stackexchange.com/landing/r/digest?cta=user&id=791 Score of 222

11.54.2.3 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 632

answered by Christian https://tex.stackexchange.com/landing/r/digest?cta=user&id=13450 Score of 816

11.54.2.4 bibtex vs. biber and biblatex vs. natbib

https://tex.stackexchange.com/landing/r/digest?cta=question&id=25701

I've heard of many different bibliography-related packages/platforms/?. What's the difference between the following, which is good for what tasks, advantages/disadvantages, which one is the most ... 
[bibliographies] [biblatex] [bibtex] [natbib] [biber]
 

asked by doncherry https://tex.stackexchange.com/landing/r/digest?cta=user&id=4012 Score of 681

11.54.2.5 Big Parenthesis in an Equation

https://tex.stackexchange.com/landing/r/digest?cta=question&id=38868

I have an equation contained inside \[...\], which automatically makes a \sum with sub- and superscripts turn big--so that the summation sign looks awkward inside parenthesis.  Any idea how to make ... 
[math-mode] [delimiters]
 

asked by jamaicanworm https://tex.stackexchange.com/landing/r/digest?cta=user&id=9757 Score of 270

answered by qubyte https://tex.stackexchange.com/landing/r/digest?cta=user&id=9043 Score of 398

11.54.2.6 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 Score of 692

answered by Juan A. Navarro https://tex.stackexchange.com/landing/r/digest?cta=user&id=169 Score of 851

11.54.2.7 Keeping tables/figures close to where they are mentioned

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2275

Is there any package or a method to force LaTeX to keep floating environments like table and figure closer to where they are declared? 
[floats] [positioning]
 

asked by artimess https://tex.stackexchange.com/landing/r/digest?cta=user&id=833 Score of 407