11.69.2 Greatest hits from previous weeks

11.69.2.1 Show equation number only once in align environment
11.69.2.2 How to write a function (piecewise) with bracket outside?
11.69.2.3 How to prevent LaTeX from hyphenating the entire document?
11.69.2.4 How do I turn off equation auto numbering
11.69.2.5 How do I put text over symbols?
11.69.2.6 How to add a forced line break inside a table cell
11.69.2.7 How to type special/accented letters in LaTeX?
11.69.2.1 Show equation number only once in align environment

https://tex.stackexchange.com/landing/r/digest?cta=question&id=17528

I want the equation number to be shown only at the last line, or better, somewhere in the middle of all. So instead of (1), (2), ... only (1). 
I use \begin{align} ... \end{align} 
[equations] [align]
 
asked by Bogdan https://tex.stackexchange.com/landing/r/digest?cta=user&id=5350 Score of 296
answered by Gonzalo Medina https://tex.stackexchange.com/landing/r/digest?cta=user&id=3954 Score of 277
11.69.2.2 How to write a function (piecewise) with bracket outside?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=32140

How to write this Piecewise function using LaTeX? 
I tried 
$ 
\begin{array}{cc} 
\{ & 
\begin{array}{cc} 
0 & x\leq 0 \\ 
\frac{100-x}{100} & 0\leq x\leq 100 \\ 
0 & ... 
[math-mode] [equations] [brackets]
 
asked by GarouDan https://tex.stackexchange.com/landing/r/digest?cta=user&id=5314 Score of 220
answered by Ant https://tex.stackexchange.com/landing/r/digest?cta=user&id=6984 Score of 270
11.69.2.3 How to prevent LaTeX from hyphenating the entire document?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=5036

I can't find where I can remove any kind of hyphenation and just have LaTeX just do a line break. 
edit: 
Honestly speaking I just don't like to read hyphenation anywhere and that's the only reason why ... 
[hyphenation]
 
asked by Splashy https://tex.stackexchange.com/landing/r/digest?cta=user&id=1713 Score of 266
answered by Joseph Wright https://tex.stackexchange.com/landing/r/digest?cta=user&id=73 Score of 225
11.69.2.4 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 197
answered by levesque https://tex.stackexchange.com/landing/r/digest?cta=user&id=10 Score of 223
11.69.2.5 How do I put text over symbols?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=74125

This is difficult for me to explain, but how do I put words over a symbol? For instance, I want to add words over an equal sign. Anyone know the command/syntax for that? 
Also adding ^ doesn't cut it..... 
[syntax]
 
asked by Lemon https://tex.stackexchange.com/landing/r/digest?cta=user&id=10554 Score of 177
answered by Gonzalo Medina https://tex.stackexchange.com/landing/r/digest?cta=user&id=3954 Score of 133
11.69.2.6 How to add a forced line break inside a table cell

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2441

I have some text in a table and I want to add a forced line break. I want to insert a forced line break without having to specify the column width, i.e. something like the following: 
\begin{tabular}{|... 
[tables] [line-breaking]
 
asked by Denilson SA~\[DownExclamation] Maia https://tex.stackexchange.com/landing/r/digest?cta=user&id=375 Score of 953
answered by Bernard https://tex.stackexchange.com/landing/r/digest?cta=user&id=38908 Score of 772
11.69.2.7 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 258
answered by Kit https://tex.stackexchange.com/landing/r/digest?cta=user&id=791 Score of 223