8.22.2 Greatest hits from previous weeks

8.22.2.1 Why is \newpage ignored sometimes ?
8.22.2.2 Absolute Value Symbols
8.22.2.3 How can I write cases with grouping braces on both left and right side, and split the condition into two lines in LaTeX?
8.22.2.4 How to change certain pages into landscape/portrait mode
8.22.2.5 Making the bibliography appear in the table of contents
8.22.2.6 What is the "correct" way of embedding text into math mode?
8.22.2.7 Command for argmin or argmax?
8.22.2.1 Why is \newpage ignored sometimes ?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2958

I have the following towards the end of an article. The bibliography is short (4 entries). 
What's happening is that on the very last page of document I get the chart and immediately afterwards the ... 
[floats] [page-breaking]
 
asked by wishihadabettername https://tex.stackexchange.com/landing/r/digest?cta=user&id=564 Score of 166
answered by Will Robertson https://tex.stackexchange.com/landing/r/digest?cta=user&id=179 Score of 249
8.22.2.2 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 304
answered by Peter Grill https://tex.stackexchange.com/landing/r/digest?cta=user&id=4301 Score of 226
8.22.2.3 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 185
answered by Ignasi https://tex.stackexchange.com/landing/r/digest?cta=user&id=1952 Score of 133
8.22.2.4 How to change certain pages into landscape/portrait mode

https://tex.stackexchange.com/landing/r/digest?cta=question&id=337

How can I change the orientation of some pages of my document into landscape mode, while leaving the others in portrait mode (or vice versa)? 
[landscape]
 
asked by hayalci https://tex.stackexchange.com/landing/r/digest?cta=user&id=183 Score of 394
answered by rcs https://tex.stackexchange.com/landing/r/digest?cta=user&id=118 Score of 411
8.22.2.5 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 Score of 225
answered by lockstep https://tex.stackexchange.com/landing/r/digest?cta=user&id=510 Score of 170
8.22.2.6 What is the "correct" way of embedding text into math mode?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=3415

Lets say I have something like: 
\[ Let x = number of cats \] 
(This is a contrived example, but pretend we are actually inside a long align environment block...) "Let" and "number of cats" need to ... 
[math-mode]
 
asked by Billy ONeal https://tex.stackexchange.com/landing/r/digest?cta=user&id=192 Score of 263
8.22.2.7 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 272
answered by Jan Hlavacek https://tex.stackexchange.com/landing/r/digest?cta=user&id=396 Score of 291