5.26.1 Top new questions this week

5.26.1.1 Spacing setting of math mode

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=501447

In typing of an article, I need to type many formulas like 
$ \left( a, b,c,d | e,f,g,h \right) $. 
Since they are too tight, I should add space using \, command to obtain 
$ \left( a, \, b, \, c, \,  ... 
[math-mode] [spacing]
 

asked by HS8637 https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=113205 11 votes

answered by egreg https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=4427 14 votes

5.26.1.2 Vertical tennis ball into fancy new enumerate

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=501808

Considering the related questions: 
Error fontawesome5 on a specific preamble; 
Symbol of the tennis ball 
and this new style of fancy enumerate with the tennis balls with this MWE, 
... 
[enumerate] [enumitem] [fontawesome]
 

asked by Sebastiano https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=117876 10 votes

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

5.26.1.3 To which atoms correspond \left and \right in \showlists?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=502202

This is the input: 
$\left|-\infty\right|\showlists$ 
\end 
This is the output: 
\mathinner 
.\left"26A30C 
.\mathbin 
..\fam2 ^^@ 
.\mathord 
..\fam2 1 
.\right"26A30C 
It is not clear to what atoms  ... 
[math-mode] [tex-core]
 

asked by Igor Liferenko https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=70900 9 votes

answered by Mico https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=5001 7 votes

5.26.1.4 Where to find an interactive PDF or HTML version of the tex.web documentation?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=501817

I have problems with the memory management of an eTeX created with Jim Fowler's TeX's pascal to javascript compiler web2js as soon as I want to dump the eTeX format etex.src with more than only  ... 
[pdftex] [tex-core] [documentation] [web] [cweb]
 

asked by CarpeDiemKopi https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=192681 9 votes

answered by egreg https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=4427 9 votes

5.26.1.5 Typesetting numbers above, below, left, and right of a symbol

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=502330

What commands would be the best way to put numbers above, below, left, and right of a symbol in math-mode, as in the following image: 
Would the tensor package be useful here, or possibly another  ... 
[math-mode]
 

asked by Ian Montague https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=193820 8 votes

answered by David Carlisle https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=1090 10 votes

5.26.1.6 Why does one get the wrong value when printing counters together?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=502265

I would like to understand why the expression \the\count0\the\count1 returns 0 when they are written without spaces. Here's the code: 
\documentclass[12pt,a4paper]{article} 
\usepackage[utf8]{inputenc} 
... 
[tex-core] [counters]
 

asked by Levy https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=48279 8 votes

answered by frougon https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=73317 14 votes

5.26.1.7 Achieving better kerning in text mode italics

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=501790

In the font I'm using to set italics, the apostrophe / right single quote is outputting poorly kerned: 
The kerning of the first apostrophe in 'n' and the apostrophes in they've and they're is  ... 
[fonts] [luatex] [italic] [text-mode] [italic-correction]
 

asked by solisoc https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=169189 7 votes

answered by Marcel KrA~\274ger https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=80496 5 votes