11.34.1 Top new questions this week

11.34.1.1 What does `\mathalpha` mean in unicode-math?
11.34.1.2 Aligning equations at non-relations
11.34.1.3 Multicols and tabular environments problems
11.34.1.4 zref-clever and amsthm's numberwithin
11.34.1.5 textup vs normaltext for descriptive subscripts in physics
11.34.1.6 \IfPackageLoadedT doesn't allow empty lines
11.34.1.7 Weird spacing in tabular, Beamer
11.34.1.1 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 11
answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 11
11.34.1.2 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 9
answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 8
11.34.1.3 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 9
answered by Zarko https://tex.stackexchange.com/landing/r/digest?cta=user&id=18189 Score of 6
11.34.1.4 zref-clever and amsthm's numberwithin

https://tex.stackexchange.com/landing/r/digest?cta=question&id=745008

I am trying to migrate an existing class from from cleveref to zref-clever.  I'm having trouble getting the Theorem, Lemma, etc.  (I think this is what zref-clever documenation calls the "type ... 
[amsthm] [zref-clever] [cross-references]
 
asked by Jim Hefferon https://tex.stackexchange.com/landing/r/digest?cta=user&id=339 Score of 7
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 7
11.34.1.5 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
11.34.1.6 \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
11.34.1.7 Weird spacing in tabular, Beamer

https://tex.stackexchange.com/landing/r/digest?cta=question&id=742731

I'm working on a presentation in beamer and some weird spacing is happening inside a table. 
This is the code I'm using and below a screenshot of the result. 
\documentclass[aspectratio=169,xcolor=... 
[tables] [beamer] [line-spacing]
 
asked by Albs51 https://tex.stackexchange.com/landing/r/digest?cta=user&id=284054 Score of 6
answered by samcarter_is_at_topanswers.xyz https://tex.stackexchange.com/landing/r/digest?cta=user&id=36296 Score of 8