9.85.2 Greatest hits from previous weeks

9.85.2.1 How do I turn off equation auto numbering

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2597

I have an equation like this: 
\begin{align} 
P(A \cup B) = \sum_{\omega \in A \cup B} P(\omega) = \sum_{\omega \in A} P(\omega) + \sum_{\omega \in B} P(\omega) 
= P(A) + P(B) 
\end{... 
[equations] [numbering]
 

asked by user1046 https://tex.stackexchange.com/landing/r/digest?cta=user&id=1046 Score of 185

answered by levesque https://tex.stackexchange.com/landing/r/digest?cta=user&id=10 Score of 213

9.85.2.2 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 243

9.85.2.3 Tabular: title above and caption below?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=15282

I have a table that I would like to put the Title above and a caption below. Intuitively (though I know how troublesome intuition can be in something like LaTeX), I should be able to do as below: 
\... 
[tables] [captions]
 

asked by Alec https://tex.stackexchange.com/landing/r/digest?cta=user&id=2457 Score of 78

answered by Alan Munn https://tex.stackexchange.com/landing/r/digest?cta=user&id=2693 Score of 55

9.85.2.4 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 242

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 202

9.85.2.5 How to typeset subscript in usual text mode?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=1013

It's easy to make subscripts in math mode: $a_i$. 
How do I make a subscript outside math environment, likethis? 
[subscripts]
 

asked by P Shved https://tex.stackexchange.com/landing/r/digest?cta=user&id=280 Score of 318

answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 209

9.85.2.6 How do I change the `enumerate` list format to use letters instead of the default Arabic numerals?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2291

I've seen documentation whereby an \alph command is put around the \begin{enumerate} somewhere, but I'm not entirely sure how that operates... 
[numbering] [lists] [enumerate]
 

asked by Billy ONeal https://tex.stackexchange.com/landing/r/digest?cta=user&id=192 Score of 422

answered by frabjous https://tex.stackexchange.com/landing/r/digest?cta=user&id=411 Score of 374

9.85.2.7 Package natbib Error: Bibliography not compatible with author-year citations

https://tex.stackexchange.com/landing/r/digest?cta=question&id=54480

I have a basic tex file and a bibliography which is exported from Mendeley 
However, when I want to cite in the author-year style, I get the error: 
Package natbib Error: Bibliography not compatible ... 
[bibtex] [errors] [natbib]
 

asked by grrrbytes https://tex.stackexchange.com/landing/r/digest?cta=user&id=13217 Score of 276

answered by Josh Porter https://tex.stackexchange.com/landing/r/digest?cta=user&id=15128 Score of 147