11.33.1 Top new questions this week

11.33.1.1 What does `\mathalpha` mean in unicode-math?
11.33.1.2 Aligning equations at non-relations
11.33.1.3 Multicols and tabular environments problems
11.33.1.4 Generate plural forms of labels referenced with fancyref
11.33.1.5 `.initial:n` leads to an error when after `.inherit:n`?
11.33.1.6 textup vs normaltext for descriptive subscripts in physics
11.33.1.7 \IfPackageLoadedT doesn't allow empty lines
11.33.1.1 What does `\mathalpha` mean in unicode-math?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=742713

Looking through unicode-math-table.tex, the characters are defined via commands like: 
\UnicodeMathSymbol{"1D7BC}{\mbfitsanssigma}{\mathalpha}{mathematical sans-serif bold italic small sigma}% 
I'... 
[spacing] [luatex] [unicode-math]
 
asked by Andrew Stacey https://tex.stackexchange.com/landing/r/digest?cta=user&id=86 Score of 9
answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 8
11.33.1.2 Aligning equations at non-relations

https://tex.stackexchange.com/landing/r/digest?cta=question&id=742897

I want to align several equation lines using amsmath's align(ed) environments. For alignment, I want to use something else than a relation, e.g. an operator or an opening parenthesis. The ... 
[equations] [amsmath] [alignment]
 
asked by schtandard https://tex.stackexchange.com/landing/r/digest?cta=user&id=48973 Score of 8
answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 7
11.33.1.3 Multicols and tabular environments problems

https://tex.stackexchange.com/landing/r/digest?cta=question&id=742846

I am trying to put some tables in two columns using the multicols environment. Since multicols do not supports floating environments, I decided to use to center environment to make tabular work. So I ... 
[tables] [color] [multicol] [colortbl]
 
asked by omnisum https://tex.stackexchange.com/landing/r/digest?cta=user&id=209578 Score of 8
answered by Zarko https://tex.stackexchange.com/landing/r/digest?cta=user&id=18189 Score of 5
11.33.1.4 Generate plural forms of labels referenced with fancyref

https://tex.stackexchange.com/landing/r/digest?cta=question&id=742698

Can I somehow generate the plural forms if multiple labels are referenced with fancyref? 
\documentclass[12pt,a4paper]{ltxdoc} 
\usepackage{fancyref} 
\begin{document} 
\begin{equation} 
\label{eq:... 
[fancyref]
 
asked by user26918948 https://tex.stackexchange.com/landing/r/digest?cta=user&id=395008 Score of 8
answered by Steven B. Segletes https://tex.stackexchange.com/landing/r/digest?cta=user&id=25858 Score of 5
11.33.1.5 `.initial:n` leads to an error when after `.inherit:n`?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=742604

This code originally from Inheritance of keys in expl3: 
\documentclass{article} 
\begin{document} 
\ExplSyntaxOn 
\keys_define:nn { a } { 
A .tl_set:N = \l__A_tl 
} 
\keys_define:nn { } { 
b .... 
[expl3] [key-value] [l3keys]
 
asked by zpding https://tex.stackexchange.com/landing/r/digest?cta=user&id=294585 Score of 7
answered by Skillmon https://tex.stackexchange.com/landing/r/digest?cta=user&id=117050 Score of 6
11.33.1.6 textup vs normaltext for descriptive subscripts in physics

https://tex.stackexchange.com/landing/r/digest?cta=question&id=742875

In physics, at least in my understanding, descriptive subscripts must/should use the upright font which is also used for the main text. For example using \text{} would be wrong since it would use ... 
[math-mode] [amsmath] [typography]
                                                                                  

                                                                                  
 
asked by M0M0 https://tex.stackexchange.com/landing/r/digest?cta=user&id=228576 Score of 6
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 8
11.33.1.7 \IfPackageLoadedT doesn't allow empty lines

https://tex.stackexchange.com/landing/r/digest?cta=question&id=742769

Why doesn't \IfPackageLoadedT allow empty lines inside its argument? 
Suppose I have: 
\documentclass{article} 
\IfPackageLoadedT{amsmath}{ 
\newcommand{\foo}{} 
} 
\begin{document} 
a 
\end{document} 
... 
[documentclass-writing] [latex-base]
 
asked by Gargantuar https://tex.stackexchange.com/landing/r/digest?cta=user&id=172890 Score of 6
answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 3