8.17.2 Greatest hits from previous weeks

8.17.2.1 How do I align an image to center?
8.17.2.2 How to create fixed width table columns with text raggedright/centered/raggedleft?
8.17.2.3 Matrix in Latex
8.17.2.4 inputenc Error: Unicode char \u8: not set up for use with LaTeX
8.17.2.5 How to add an empty line between paragraphs?
8.17.2.6 Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?
8.17.2.7 Double line spacing
8.17.2.1 How do I align an image to center?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=53862

How do I align an image to center? 
In a beamer presentation I have a 2-3 items on a slide followed by an image. 
The image is not wide enough to cover whole slide, so it leaves around 30% space from ... 
[beamer] [horizontal-alignment]
 
asked by epsilon8 https://tex.stackexchange.com/landing/r/digest?cta=user&id=12860 Score of 74
8.17.2.2 How to create fixed width table columns with text raggedright/centered/raggedleft?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=12703

I would like to create a table with some columns' width specified, while the text in those columns should be centered both horizontally and vertically. I found out that 
\usepackage{array} 
\begin{... 
[tables] [horizontal-alignment] [width]
 
asked by Covi https://tex.stackexchange.com/landing/r/digest?cta=user&id=3970 Score of 285
answered by lockstep https://tex.stackexchange.com/landing/r/digest?cta=user&id=510 Score of 444
8.17.2.3 Matrix in Latex

https://tex.stackexchange.com/landing/r/digest?cta=question&id=204621

I am new to Latex, and I have been trying to get the matrix of following form 
[x11 x12 x13 . . . . x1n 
x21 x22 x23 . . . . x2n 
. 
. 
. 
. 
xd1 xd2 xd3 . . . . xdn] 
... 
[matrices]
 
asked by Lakshmi Narayanan https://tex.stackexchange.com/landing/r/digest?cta=user&id=63361 Score of 134
answered by skpblack https://tex.stackexchange.com/landing/r/digest?cta=user&id=42912 Score of 206
8.17.2.4 inputenc Error: Unicode char \u8: not set up for use with LaTeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=83440

This is with ref to my previous question Package clash in multilingual report. 
\documentclass[11pt,table,a4paper]{article} 
\usepackage{lmodern} 
\usepackage[utf8]{inputenc} 
\usepackage[T1]{fontenc} 
\... 
[errors] [unicode] [languages] [cyrillic] [input-encodings]
 
asked by Manish https://tex.stackexchange.com/landing/r/digest?cta=user&id=19116 Score of 127
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 96
8.17.2.5 How to add an empty line between paragraphs?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=135134

I have two sections which I'd like to separate by an empty line. Every time I press Enter, LyX removes that empty line between paragraphs. How do I prevent this? 
[spacing] [lyx]
 
asked by goldisfine https://tex.stackexchange.com/landing/r/digest?cta=user&id=37301 Score of 140
answered by Werner https://tex.stackexchange.com/landing/r/digest?cta=user&id=5764 Score of 153
8.17.2.6 Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2369

When typing < or > in LaTeX and compiling with pdflatex, the less than and greater than symbols appear at upside down exclamation points. I'm not in math mode. 
[symbols] [punctuation] [font-encodings]
 
asked by biased_estimator https://tex.stackexchange.com/landing/r/digest?cta=user&id=996 Score of 297
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 266
8.17.2.7 Double line spacing

https://tex.stackexchange.com/landing/r/digest?cta=question&id=819

I would like to typeset a draft of my document with double linespacing so that my collaborators have space to write in their edits (with a pen).  How do I do it? 
[line-spacing] [setspace]
 
asked by Vebjorn Ljosa https://tex.stackexchange.com/landing/r/digest?cta=user&id=35 Score of 233
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 169