10.73.2 Greatest hits from previous weeks

10.73.2.1 Not equal sign (a^\211 ) with a vertical bar
10.73.2.2 How can I have two tables side by side?
10.73.2.3 \mathbb Z  yields undefined control sequence error
10.73.2.4 How can I write cases with grouping braces on both left and right side, and split the condition into two lines in LaTeX?
10.73.2.5 How to add indentation
10.73.2.6 What can I use to typeset MATLAB code in my document?
10.73.2.7 How do you get \mathbb 1  to work (characteristic function of a set)?
10.73.2.1 Not equal sign (a^\211 ) with a vertical bar

https://tex.stackexchange.com/landing/r/digest?cta=question&id=108193

Is it possible to get a \neq but with a vertical bar instead of a slanted one? There are inequality operators like AMS's \gvertneqq that feature this kind of "not equal" but not without mixing it with ... 
[math-mode] [symbols] [relation-symbols]
 
asked by Christian https://tex.stackexchange.com/landing/r/digest?cta=user&id=13450 Score of 45
10.73.2.2 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 246
answered by TH. https://tex.stackexchange.com/landing/r/digest?cta=user&id=647 Score of 222
10.73.2.3 \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 254
answered by TorbjA~,rn T. https://tex.stackexchange.com/landing/r/digest?cta=user&id=586 Score of 313
10.73.2.4 How can I write cases with grouping braces on both left and right side, and split the condition into two lines in LaTeX?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=240868

The code I used to write 
is this one 
$$ 
X(m,n)= 
\begin{cases} 
x(n),\\ 
x(n-1)\\ 
x(n-1) 
\end{cases} 
$$ 
But I don't know how to write this one 
Also, what if I want to write this 
[math-mode] [cases]
 
asked by MaryA~ https://tex.stackexchange.com/landing/r/digest?cta=user&id=65856 Score of 205
answered by Ignasi https://tex.stackexchange.com/landing/r/digest?cta=user&id=1952 Score of 145
10.73.2.5 How to add indentation

https://tex.stackexchange.com/landing/r/digest?cta=question&id=45501

I am writing a thesis report using LaTeX and I need to add indentations because every new paragraph starts from the initial position on the left. 
How do I add indentations? 
[spacing] [indentation]
 
asked by pavani https://tex.stackexchange.com/landing/r/digest?cta=user&id=9327 Score of 150
answered by Frank Mittelbach https://tex.stackexchange.com/landing/r/digest?cta=user&id=10109 Score of 100
10.73.2.6 What can I use to typeset MATLAB code in my document?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=75116

This question led to a new package: 
matlab-prettifier 
Does anybody have a quick and easy way to typeset some relatively long MATLAB code in the appendix? I looked up a few methods, and the mcode ... 
[listings] [highlighting] [matlab]
 
asked by suzu https://tex.stackexchange.com/landing/r/digest?cta=user&id=19279 Score of 119
10.73.2.7 How do you get \mathbb 1  to work (characteristic function of a set)?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=26637

I am trying to get the digit one printed the \mathbb{} font in math mode, however the command 
\mathbb{1} 
outputs some rubbish. I certainly saw the character I am after in some pdf's generated from ... 
[math-mode] [formatting]
 
asked by Grzenio https://tex.stackexchange.com/landing/r/digest?cta=user&id=3329 Score of 256
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 282