11.76.2 Greatest hits from previous weeks

11.76.2.1 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 325

answered by Jan Hlavacek https://tex.stackexchange.com/landing/r/digest?cta=user&id=396 Score of 361

11.76.2.2 \mathbb Z  yields undefined control sequence error

https://tex.stackexchange.com/landing/r/digest?cta=question&id=38769

I am using WinEdt 6 for compiling my TeX documents. I am getting an error with contains the line $\mathbb{Z}$ showing that it is undefined control sequence. How should I rectify it? Should I include ... 
[math-mode] [errors] [symbols]
 

asked by Ramana Venkata https://tex.stackexchange.com/landing/r/digest?cta=user&id=10154 Score of 258

answered by TorbjA~,rn T. https://tex.stackexchange.com/landing/r/digest?cta=user&id=586 Score of 325

11.76.2.3 Typeset the shrug A^\257\_(a~\203\204)_/A^\257 emoji

https://tex.stackexchange.com/landing/r/digest?cta=question&id=279100

I'm completing a problem set, one problem for which I literally have no idea what to do on. The graders would prefer to have a physical copy of the problem so I thought it best to include the A^\257\_(a~\203\204)_/A^\257... 
[unicode] [characters] [fun]
 

asked by djechlin https://tex.stackexchange.com/landing/r/digest?cta=user&id=75452 Score of 66

answered by mickep https://tex.stackexchange.com/landing/r/digest?cta=user&id=52406 Score of 37

11.76.2.4 Absolute Value Symbols

https://tex.stackexchange.com/landing/r/digest?cta=question&id=43008

What is the "best LaTeX practices" for writing absolute value symbols?  Are there any packages which provide good methods? 
Some options include|x| and \mid x \mid, but I'm not sure which is best... 
[math-mode] [symbols]
 

asked by jamaicanworm https://tex.stackexchange.com/landing/r/digest?cta=user&id=9757 Score of 351

answered by Peter Grill https://tex.stackexchange.com/landing/r/digest?cta=user&id=4301 Score of 260

11.76.2.5 Commenting out large sections

https://tex.stackexchange.com/landing/r/digest?cta=question&id=17816

To "comment out" a line, I need to insert a % at the beginning of the line (so that the line will not be compiled). 
Is there a way to comment out a large section without having to manually ... 
[comments]
 

asked by BeauGeste https://tex.stackexchange.com/landing/r/digest?cta=user&id=5419 Score of 475

answered by Martin Scharrer https://tex.stackexchange.com/landing/r/digest?cta=user&id=2975 Score of 380

11.76.2.6 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] 
Where ... 
[matrices]
 

asked by Lakshmi Narayanan https://tex.stackexchange.com/landing/r/digest?cta=user&id=63361 Score of 154

answered by skpblack https://tex.stackexchange.com/landing/r/digest?cta=user&id=42912 Score of 227

11.76.2.7 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 253

answered by TH. https://tex.stackexchange.com/landing/r/digest?cta=user&id=647 Score of 225