8.13.2 Greatest hits from previous weeks

8.13.2.1 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 rasgo https://tex.stackexchange.com/landing/r/digest?cta=user&id=10511 Score of 172

8.13.2.2 How can I have two tables side by side?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2832

Suppose I have two tables that don't have many columns (3, for example). How can I position them side by side? 
[tables] [positioning]
 

asked by bada https://tex.stackexchange.com/landing/r/digest?cta=user&id=572 Score of 207

answered by TH. https://tex.stackexchange.com/landing/r/digest?cta=user&id=647 Score of 188

8.13.2.3 Putting two images beside each other

https://tex.stackexchange.com/landing/r/digest?cta=question&id=148438

If I want to put two images beside each other, what should I do? I have inserted a figure. But, rather than having the next figure on a new line, I want it to be beside the already inserted figure. ... 
[graphics] [floats] [positioning]
 

asked by Simplicity https://tex.stackexchange.com/landing/r/digest?cta=user&id=28871 Score of 76

answered by Masroor https://tex.stackexchange.com/landing/r/digest?cta=user&id=14103 Score of 170

8.13.2.4 Matrix in Latex

https://tex.stackexchange.com/landing/r/digest?cta=question&id=204621

I am new to Latex, and I have been trying to get the matrix of following form 
[x11 x12 x13 . . . . x1n 
x21 x22 x23 . . . . x2n 
. 
. 
. 
. 
xd1 xd2 xd3 . . . . xdn] 
... 
[matrices]
 

asked by Lakshmi Narayanan https://tex.stackexchange.com/landing/r/digest?cta=user&id=63361 Score of 133

answered by skpblack https://tex.stackexchange.com/landing/r/digest?cta=user&id=42912 Score of 205

8.13.2.5 Command for argmin or argmax?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=5223

How can you get the argmin or argmax in Latex? Two solutions I found are: 
\underset{x}{\operatorname{argmax}} 
\DeclareMathOperator*{\argmin}{arg\,min} 
Any other ideas? 
[1]http://www.breakthru.... 
[math-mode] [symbols] [math-operators]
 

asked by Alejandro https://tex.stackexchange.com/landing/r/digest?cta=user&id=1128 Score of 269

answered by Jan Hlavacek https://tex.stackexchange.com/landing/r/digest?cta=user&id=396 Score of 287

8.13.2.6 Underscores in words (text)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=48632

How can I produce the text Word_one_two in LaTeX? 
I tried: 
Samp\_Dist\_Corr 
But, it doesn't quite look right. Also, I want it in the typewriter font, so actually, I'm doing: 
\texttt{Samp\_Dist\... 
[characters] [typewriter]
 

asked by Flux Capacitor https://tex.stackexchange.com/landing/r/digest?cta=user&id=11728 Score of 213

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 184

8.13.2.7 BibTeX loses capitals when creating .bbl file

https://tex.stackexchange.com/landing/r/digest?cta=question&id=10772

Titles of articles I'm about to cite contain upper case letters and when using BibTeX it converts them to lower case ones. This happens only in the title and only the first letter conserves its case. ... 
[bibtex] [capitalization]
                                                                                  

                                                                                  
 

asked by Crowley https://tex.stackexchange.com/landing/r/digest?cta=user&id=649 Score of 315

answered by Yossi Gil https://tex.stackexchange.com/landing/r/digest?cta=user&id=3391 Score of 322