7.16.2 Greatest hits from previous weeks

7.16.2.1 How to write partial differential equation (Ex. dQ/dt=ds/dt) with real partial derivative signs?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=225523

I would like to make a partial differential equation by using the following notation: 
dQ/dt 
(without / but with a real numerator and denomenator). Earlier today I got help from this page on how to ... 
[equations]
 

asked by David https://tex.stackexchange.com/landing/r/digest?cta=user&id=71265 103 votes

answered by Benjamin McKay https://tex.stackexchange.com/landing/r/digest?cta=user&id=19327 6 votes

7.16.2.2 Which dot character to use in which context?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=19180

Wikipedia lists several dot characters in Unicode.  These are the ones that are ambiguous to me: 
interpunct, middle dot (A^\[CenterDot])   ·   ·   U+00B7   "midpoint (in typography)" 
... 
[symbols] [best-practices] [punctuation] [unicode] [unicode-math]
 

asked by endolith https://tex.stackexchange.com/landing/r/digest?cta=user&id=5773 197 votes

answered by Danie Els https://tex.stackexchange.com/landing/r/digest?cta=user&id=1683 129 votes

7.16.2.3 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 user5419 https://tex.stackexchange.com/landing/r/digest?cta=user&id=5419 369 votes

answered by Martin Scharrer https://tex.stackexchange.com/landing/r/digest?cta=user&id=2975 289 votes

7.16.2.4 How to write cases with 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 
I appreciate any help. 
Edited: I'm sorry to add this ... 
[math-mode] [cases]
 

asked by MaryA~ https://tex.stackexchange.com/landing/r/digest?cta=user&id=65856 163 votes

answered by Ignasi https://tex.stackexchange.com/landing/r/digest?cta=user&id=1952 118 votes

7.16.2.5 \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 188 votes

7.16.2.6 Making the bibliography appear in the table of contents

https://tex.stackexchange.com/landing/r/digest?cta=question&id=8458

I need to make my (BibTeX) references section appear in the table of contents of my LaTeX document (documentclass: article), with section numbering too. 
My approach until now has been making a new ... 
[sectioning] [table-of-contents] [bibliographies]
 

asked by Genba https://tex.stackexchange.com/landing/r/digest?cta=user&id=2311 197 votes

answered by lockstep https://tex.stackexchange.com/landing/r/digest?cta=user&id=510 152 votes

7.16.2.7 Multi-line (block) comments in LaTeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=87303

In LaTeX, % can be used for single-line comments. For multi-line comments, the following command is available in the verbatim package. 
\begin{comment} 
Commented code 
\end{comment} 
But is there a ... 
[comments]
                                                                                  

                                                                                  
 

asked by Arindam Pal https://tex.stackexchange.com/landing/r/digest?cta=user&id=17379 245 votes

answered by guillem https://tex.stackexchange.com/landing/r/digest?cta=user&id=3941 192 votes