9.8.1 Top new questions this week

9.8.1.1 Inline math messes up vertical spacing

https://tex.stackexchange.com/landing/r/digest?cta=question&id=673317

Often when I use math inside a paragraph, the spacing becomes ajar. This particularly happens when I use exponents or "choose" notation (for combinations). 
Minimal working example below. The ... 
[math-mode] [spacing] [line-spacing] [inline] [vertical-spacing]
 

asked by ABC https://tex.stackexchange.com/landing/r/digest?cta=user&id=288875 Score of 15

answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 16

9.8.1.2 Drawing a diagram showing a relation between two sets?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=673531

The following diagram is given: 
I tried to draw it using table environment, but could not insert the skew arrows properly! Customizing this useful answer, I reached to: 
\documentclass[a4paper,12pt]{... 
[tikz-pgf] [diagrams] [tikz-arrows] [arrows]
 

asked by Mikasa https://tex.stackexchange.com/landing/r/digest?cta=user&id=59624 Score of 8

answered by gernot https://tex.stackexchange.com/landing/r/digest?cta=user&id=110998 Score of 10

9.8.1.3 Multiple alignments of equations

https://tex.stackexchange.com/landing/r/digest?cta=question&id=673331

I have three equations of different lengths, each having alignments within them (at the '=' and'+') sign. However, I also want to align the three equations at the first '=' of each equation (marked in ... 
[math-mode] [equations] [align]
 

asked by Vala https://tex.stackexchange.com/landing/r/digest?cta=user&id=168324 Score of 7

answered by Vincent https://tex.stackexchange.com/landing/r/digest?cta=user&id=201628 Score of 8

9.8.1.4 Opposite of csname

https://tex.stackexchange.com/landing/r/digest?cta=question&id=673614

If I have a macro \Name that expands to a macro name, I can use that with \csname or the various tools from etoolbox. Can I do the opposite, i.e., get the name of a macro? 
My use case is the following:... 
[macros] [definition] [csname]
 

asked by Bubaya https://tex.stackexchange.com/landing/r/digest?cta=user&id=27717 Score of 7

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 8

9.8.1.5 Integer random function gave decimals

https://tex.stackexchange.com/landing/r/digest?cta=question&id=673077

I wanted a random color stored in mycolor, so I wrote 
\color_set:nnn{mycolor}{RGB}{ 
\int_rand:n{256}-1,\int_rand:n{256}-1,\int_rand:n{256}-1} 
However, it did not work correctly, so I checked it ... 
[expl3]
 

asked by youthdoo https://tex.stackexchange.com/landing/r/digest?cta=user&id=269705 Score of 7

answered by Joseph Wright https://tex.stackexchange.com/landing/r/digest?cta=user&id=73 Score of 7

9.8.1.6 amsmath error: Multiple \label's: label 'xxx' will be lost

https://tex.stackexchange.com/landing/r/digest?cta=question&id=673301

This is my code: 
\documentclass{article} 
\usepackage{mathtools} 
\newcounter{rulec} 
\renewcommand\therulec{R\arabic{rulec}} 
\newcommand\trule[1]{\refstepcounter{rulec}\label{r:#1}\therulec: } 
\begin{... 
[amsmath]
                                                                                  

                                                                                  
 

asked by yegor256 https://tex.stackexchange.com/landing/r/digest?cta=user&id=1449 Score of 6

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 12

9.8.1.7 jobname, ifdefstring, IfSubStringInString, detokenize

https://tex.stackexchange.com/landing/r/digest?cta=question&id=673592

My question is originally the same as 
use jobname to "pass parameters"? 
But that particular question doesn't seem to have a complete answer. (I'm sure that in the minds of experts who deeply ... 
[jobname] [detokenize]
 

asked by Ryo https://tex.stackexchange.com/landing/r/digest?cta=user&id=44271 Score of 5

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 4