9.48.1 Top new questions this week

9.48.1.1 How to create an overlapped colored equation?
9.48.1.2 set union operation in tikz
9.48.1.3 Two large figures side by side
9.48.1.4 align by any character in tabular
9.48.1.5 Special alignment of equations in an optimization problem
9.48.1.6 Why overfull in terms of pts and underfull in terms of badness?
9.48.1.7 Exercise 8.6 of The TeXbook
9.48.1.1 How to create an overlapped colored equation?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=691775

I wonder if there is a tex library that can create an equation like this (found in this paper and the authors actually create a figure for this, not in tex) 
With some research, I see that the arrows ... 
[equations] [color] [witharrows]
 
asked by dragon_and_dracula https://tex.stackexchange.com/landing/r/digest?cta=user&id=281646 Score of 13
answered by muzimuzhi Z https://tex.stackexchange.com/landing/r/digest?cta=user&id=79060 Score of 21
9.48.1.2 set union operation in tikz

https://tex.stackexchange.com/landing/r/digest?cta=question&id=691650

Is there a way to get the 'set union' of two closed paths in tikz? 
To show what I mean, consider the following MWE 
\documentclass{article} 
\usepackage{tikz} 
\begin{document} 
\begin{tikzpicture} 
\... 
[tikz-pgf]
 
asked by N. Virgo https://tex.stackexchange.com/landing/r/digest?cta=user&id=12461 Score of 7
answered by Juan CastaA~+-o https://tex.stackexchange.com/landing/r/digest?cta=user&id=231368 Score of 7
9.48.1.3 Two large figures side by side

https://tex.stackexchange.com/landing/r/digest?cta=question&id=691456

Question 
I want to place two TikZ pictures side by side: 
Note: 
They are vertically centered. 
One is wider than half the page. 
The three gaps are equal (as if by using \hfil <a> \hfil <b> ... 
[tikz-pgf] [captions] [tabularx] [figure-placement] [hfill]
 
asked by glibg10b https://tex.stackexchange.com/landing/r/digest?cta=user&id=297959 Score of 7
answered by glibg10b https://tex.stackexchange.com/landing/r/digest?cta=user&id=297959 Score of 0
9.48.1.4 align by any character in tabular

https://tex.stackexchange.com/landing/r/digest?cta=question&id=691889

How would one align the RHS by the "8"s in the following? I tried adding another column, and then left aligning the "999998" right, and the "00001" left, but there was a ... 
[tables] [horizontal-alignment]
 
asked by Sam https://tex.stackexchange.com/landing/r/digest?cta=user&id=289717 Score of 6
answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 6
9.48.1.5 Special alignment of equations in an optimization problem

https://tex.stackexchange.com/landing/r/digest?cta=question&id=691520

In the following problem, I would like to align the y in the fourth equation with the y in the third equation. 
This question may seem obvious, but I'm still struggling with equation alignment in a ... 
[equations] [amsmath] [aligned]
 
asked by AEW https://tex.stackexchange.com/landing/r/digest?cta=user&id=62605 Score of 6
answered by Werner https://tex.stackexchange.com/landing/r/digest?cta=user&id=5764 Score of 6
9.48.1.6 Why overfull in terms of pts and underfull in terms of badness?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=691480

I am reading Knuth's The TeXbook, and experimenting around as directed in Chapter 6, I found that the quality of overfull warnings is reported by x pt too wide where x is a decimal; whereas, that of ... 
[tex-core] [plain-tex] [warnings] [overfull] [underfull]
                                                                                  

                                                                                  
 
asked by Atom https://tex.stackexchange.com/landing/r/digest?cta=user&id=207649 Score of 5
answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 3
9.48.1.7 Exercise 8.6 of The TeXbook

https://tex.stackexchange.com/landing/r/digest?cta=question&id=691863

Exercise 8.6. Assume that the category codes of plain TEX are in force, except that the characters ^^A, ^^B, ^^C, ^^M belong respectively to categories 0, 7, 10, and 11. What tokens are produced from ... 
[tex-core] [token-lists]
 
asked by Atom https://tex.stackexchange.com/landing/r/digest?cta=user&id=207649 Score of 5
answered by LdBeth https://tex.stackexchange.com/landing/r/digest?cta=user&id=246082 Score of 7