10.18.2 Greatest hits from previous weeks

10.18.2.1 How to create fixed width table columns with text raggedright/centered/raggedleft?
10.18.2.2 Nice scientific pictures show off
10.18.2.3 What point (pt) font size are \Large etc.?
10.18.2.4 Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?
10.18.2.5 How do I turn off equation auto numbering
10.18.2.6 making appendix for thesis
10.18.2.7 What does the phrase "Underfull \hbox (badness 10000) in paragraph" actually mean?
10.18.2.1 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 310
answered by lockstep https://tex.stackexchange.com/landing/r/digest?cta=user&id=510 Score of 476
10.18.2.2 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 571
answered by Charles Staats https://tex.stackexchange.com/landing/r/digest?cta=user&id=484 Score of 343
10.18.2.3 What point (pt) font size are \Large etc.?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=24599

In the preamble I have: 
\documentclass[a4paper,11pt]{article} 
\usepackage{fontspec} 
\setmainfont{Arial} 
What can be inferred about the real font pt size for the following? 
\tiny, \scriptsize, \... 
[fontsize] [class-options]
 
asked by Level1Coder https://tex.stackexchange.com/landing/r/digest?cta=user&id=6825 Score of 292
10.18.2.4 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 321
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 290
10.18.2.5 How do I turn off equation auto numbering

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2597

I have an equation like this: 
\begin{align} 
P(A \cup B) = \sum_{\omega \in A \cup B} P(\omega) = \sum_{\omega \in A} P(\omega) + \sum_{\omega \in B} P(\omega) 
= P(A) + P(B) 
\end{... 
[equations] [numbering]
 
asked by user1046 https://tex.stackexchange.com/landing/r/digest?cta=user&id=1046 Score of 185
answered by levesque https://tex.stackexchange.com/landing/r/digest?cta=user&id=10 Score of 214
10.18.2.6 making appendix for thesis

https://tex.stackexchange.com/landing/r/digest?cta=question&id=49643

I need some help with creating an appendix for my thesis. I have about 10 figures which need to be in the appendix. I have a good appendix with the following code: 
\appendix 
\addcontentsline{toc}{... 
[appendices] [thesis]
 
asked by user13017 https://tex.stackexchange.com/landing/r/digest?cta=user&id=13017 Score of 228
answered by Gonzalo Medina https://tex.stackexchange.com/landing/r/digest?cta=user&id=3954 Score of 243
10.18.2.7 What does the phrase "Underfull \hbox (badness 10000) in paragraph" actually mean?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=334246

What does the actual phrase above mean? 
[errors] [tex-core] [boxes] [paragraphs] [underfull]
 
asked by Charles Boehm https://tex.stackexchange.com/landing/r/digest?cta=user&id=116447 Score of 125
answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 104