11.53.1 Top new questions this week

11.53.1.1 Draw rectangles with semi-circular ends in TikZ

https://tex.stackexchange.com/landing/r/digest?cta=question&id=749073

I want to draw the following image via TikZ. 
I needed some help in drawing one of the tubular shapes (such as the one joining the 3 vertices on the left). I have tried using the node command with ... 
[tikz-pgf]
 

asked by Mihir Neve https://tex.stackexchange.com/landing/r/digest?cta=user&id=219587 Score of 11

answered by matexmatics https://tex.stackexchange.com/landing/r/digest?cta=user&id=290058 Score of 12

11.53.1.2 Improving a correspondence

https://tex.stackexchange.com/landing/r/digest?cta=question&id=749223

I have the following code 
\documentclass[a4paper]{book} 
\usepackage{amsmath} 
\usepackage{amssymb} 
\begin{document} 
\begin{center} 
\begin{tabular}{ccccc} 
$z$ & $\prec$ & $\underbrace{... 
[spacing]
 

asked by Patricio https://tex.stackexchange.com/landing/r/digest?cta=user&id=221544 Score of 9

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 10

11.53.1.3 Stereographic projection in latex

https://tex.stackexchange.com/landing/r/digest?cta=question&id=749064

I wanted to generate the following graph: 
I want to modify the following latex code to obtain my graph 
\documentclass[tikz,border=10pt]{standalone} 
\usepackage{tikz} 
\usepackage{amsmath} 
\usepackage{... 
[tikz-pgf]
 

asked by Octavius https://tex.stackexchange.com/landing/r/digest?cta=user&id=286293 Score of 9

answered by nidarfp https://tex.stackexchange.com/landing/r/digest?cta=user&id=406312 Score of 9

11.53.1.4 Color Discrepancy in Figures Between LuaLaTeX and XeLaTeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=749226

I am encountering a color inconsistency when rendering the same image mentioned in this link using LuaLaTeX and XeLaTeX. The setup is as follows: 
Input: 
\documentclass{article} 
\usepackage{graphicx} 
... 
[graphics] [xetex] [luatex] [color]
 

asked by Kumaresh PS https://tex.stackexchange.com/landing/r/digest?cta=user&id=75818 Score of 8

11.53.1.5 Underline with siunitx is longer than the number

https://tex.stackexchange.com/landing/r/digest?cta=question&id=749153

Problem: When underline is used with siunitx, the underline stretches too far, as you can see (Col F). Ideally, it should only underline the number, not the entire space of the cell. 
MWE: 
(apologies ... 
[tables] [siunitx]
 

asked by Thev https://tex.stackexchange.com/landing/r/digest?cta=user&id=146362 Score of 8

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 5

11.53.1.6 A icon-symbol for a certified email

https://tex.stackexchange.com/landing/r/digest?cta=question&id=749161

In Italy, the term PEC (acronym of "Posta Elettronica Certificata" or certified email) is commonly associated with a logo depicting a closed envelope with a ribbon or seal, symbolizing the ... 
[fonts] [pdftex] [packages] [fontawesome] [icon]
 

asked by Sebastiano https://tex.stackexchange.com/landing/r/digest?cta=user&id=117876 Score of 7

answered by jessexknight https://tex.stackexchange.com/landing/r/digest?cta=user&id=111678 Score of 15

11.53.1.7 What spacing does \left. actually insert?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=749305

It is said in multiple answers here, that \right. and the corresponding \left., while not adding a delimiter, inserts a \nulldelimiterspace, see 
https://tex.stackexchange.com/a/217486 
https://tex.... 
[math-mode] [spacing] [equations] [math-operators] [delimiters]
 

asked by HerpDerpington https://tex.stackexchange.com/landing/r/digest?cta=user&id=82853 Score of 6

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 8