7.26.2 Greatest hits from previous weeks

7.26.2.1 Syntax similar to \centering for right and left?
7.26.2.2 What are the available "documentclass" types and their uses?
7.26.2.3 Package natbib Error: Bibliography not compatible with author-year citations
7.26.2.4 Superscript outside math mode
7.26.2.5 How to influence the position of float environments like figure and table in LaTeX?
7.26.2.6 Align equation left
7.26.2.7 How to write two dot above a letter?
7.26.2.1 Syntax similar to \centering for right and left?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=91566

For images we can use \centering is there anything to position the image to right side or left side of the page. 
[graphics] [horizontal-alignment]
 
asked by sachin irukula https://tex.stackexchange.com/landing/r/digest?cta=user&id=24343 144 votes
7.26.2.2 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=14 434 votes
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 153 votes
7.26.2.3 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 233 votes
answered by Josh Porter https://tex.stackexchange.com/landing/r/digest?cta=user&id=15128 127 votes
7.26.2.4 Superscript outside math mode

https://tex.stackexchange.com/landing/r/digest?cta=question&id=47324

What is the easiest way to superscript text outside of math mode? 
For example, let's say I want to write the $n^{th}$ element, but without the math mode's automatic italicization of the th.  And what ... 
[superscripts]
 
asked by jamaicanworm https://tex.stackexchange.com/landing/r/digest?cta=user&id=9757 465 votes
answered by Werner https://tex.stackexchange.com/landing/r/digest?cta=user&id=5764 689 votes
7.26.2.5 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 659 votes
answered by Frank Mittelbach https://tex.stackexchange.com/landing/r/digest?cta=user&id=10109 953 votes
7.26.2.6 Align equation left

https://tex.stackexchange.com/landing/r/digest?cta=question&id=145657

Here is my split equation: 
\documentclass{article} 
\usepackage{amsmath} 
\begin{document} 
\begin{equation} 
\begin{split} 
a_{ijk} =& \frac {Pr(M_{I} =2  \&  M_J=1 \& M_K =1 | I=i , J=j , K=... 
[equations] [align]
 
asked by user35571 https://tex.stackexchange.com/landing/r/digest?cta=user&id=35571 90 votes
answered by Ludovic C. https://tex.stackexchange.com/landing/r/digest?cta=user&id=31058 86 votes
7.26.2.7 How to write two dot above a letter?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=152951

the two dots above a letter represents two derivative of varible t. 
My method: 
\documentclass[UTF8]{ctexart} 
\usepackage{amsmath} 
\usepackage{amssymb} 
\usepackage{graphicx} 
\usepackage{epstopdf} 
\... 
[math-mode] [accents]
 
asked by mma https://tex.stackexchange.com/landing/r/digest?cta=user&id=43727 112 votes
answered by Cain https://tex.stackexchange.com/landing/r/digest?cta=user&id=28428 154 votes