10.71.2 Greatest hits from previous weeks

10.71.2.1 Big Parenthesis in an Equation
10.71.2.2 How to influence the position of float environments like figure and table in LaTeX?
10.71.2.3 \mathbb Z  yields undefined control sequence error
10.71.2.4 What are the available "documentclass" types and their uses?
10.71.2.5 How to add a forced line break inside a table cell
10.71.2.6 Nice scientific pictures show off
10.71.2.7 Absolute Value Symbols
10.71.2.1 Big Parenthesis in an Equation

https://tex.stackexchange.com/landing/r/digest?cta=question&id=38868

I have an equation contained inside \[...\], which automatically makes a \sum with sub- and superscripts turn big--so that the summation sign looks awkward inside parenthesis.  Any idea how to make ... 
[math-mode] [delimiters]
 
asked by jamaicanworm https://tex.stackexchange.com/landing/r/digest?cta=user&id=9757 Score of 264
answered by qubyte https://tex.stackexchange.com/landing/r/digest?cta=user&id=9043 Score of 390
10.71.2.2 How to influence the position of float environments like figure and table in LaTeX?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=39017

How to influence the position of float environments like figure and table in LaTeX? 
This is a general question and should collect useful answers for all users. I hope we can use this as a reference 
[floats] [positioning]
 
asked by Marco Daniel https://tex.stackexchange.com/landing/r/digest?cta=user&id=5239 Score of 732
answered by Frank Mittelbach https://tex.stackexchange.com/landing/r/digest?cta=user&id=10109 Score of 1047
10.71.2.3 \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 253
answered by TorbjA~,rn T. https://tex.stackexchange.com/landing/r/digest?cta=user&id=586 Score of 312
10.71.2.4 What are the available "documentclass" types and their uses?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=782

Some of the available classes of documents in LaTeX are well known and widely used, such as the article and beamer classes, while others are not so well known, such as the standalone class. 
I found ... 
[document-classes] [big-list]
 
asked by Vivi https://tex.stackexchange.com/landing/r/digest?cta=user&id=14 Score of 515
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 168
10.71.2.5 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 928
answered by Bernard https://tex.stackexchange.com/landing/r/digest?cta=user&id=38908 Score of 748
10.71.2.6 Nice scientific pictures show off

https://tex.stackexchange.com/landing/r/digest?cta=question&id=158668

Task 
Show off your best scientific illustration ! 
The main purpose of this question is to share beautiful scientific pictures, preferably with an educational aspect. 
Content 
Your post must ... 
[diagrams] [3d] [technical-drawing] [fun] [big-list]
 
asked by Thomas https://tex.stackexchange.com/landing/r/digest?cta=user&id=42660 Score of 574
answered by Charles Staats https://tex.stackexchange.com/landing/r/digest?cta=user&id=484 Score of 345
10.71.2.7 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 330
answered by Peter Grill https://tex.stackexchange.com/landing/r/digest?cta=user&id=4301 Score of 251