9.75.1 Top new questions this week

9.75.1.1 Zassenhaus's Butterfly Lemma
9.75.1.2 Inline Math in the end of the document
9.75.1.3 Writing I^\274 (mu) in the text mode using Latin Modern Roman font
9.75.1.4 Efficiency of expl3 vs legacy tex
9.75.1.5 Can't compile latex3 regexp
9.75.1.6 I want to have exactly 12.5 mm between my figures/tikz figures. How do I do this?
9.75.1.7 How can I connect all nodes with lines by using TikZ?
9.75.1.1 Zassenhaus's Butterfly Lemma

https://tex.stackexchange.com/landing/r/digest?cta=question&id=701173

I am preparing lecture notes for an abstract algebra course I am teaching. I would like to draw the following diagram, which is from Zassenhaus's Butterfly lemma. 
$K$ in the diagram is the group $(G'\... 
[diagrams] [lemma]
 
asked by Aravind Gundakaram https://tex.stackexchange.com/landing/r/digest?cta=user&id=307981 Score of 9
answered by Jasper Habicht https://tex.stackexchange.com/landing/r/digest?cta=user&id=47927 Score of 14
9.75.1.2 Inline Math in the end of the document

https://tex.stackexchange.com/landing/r/digest?cta=question&id=700829

Is there a way to get all the inline math ie., equations enclosed with $...$ and \(...\) in a TeX file should print in the end of the document like endfloat functionality. 
[equations]
 
asked by RampSmart https://tex.stackexchange.com/landing/r/digest?cta=user&id=304679 Score of 6
answered by wipet https://tex.stackexchange.com/landing/r/digest?cta=user&id=51799 Score of 8
9.75.1.3 Writing I^\274 (mu) in the text mode using Latin Modern Roman font

https://tex.stackexchange.com/landing/r/digest?cta=question&id=700940

Is there a way to write the literal I^\274 character using the Latin Modern Roman font or another font with the same font aesthetics/characteristics? 
The following gets me this error 
{C:/Users/Diaa/... 
[fonts] [fontspec] [greek] [latin-modern]
 
asked by Diaa https://tex.stackexchange.com/landing/r/digest?cta=user&id=2288 Score of 6
answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 10
9.75.1.4 Efficiency of expl3 vs legacy tex

https://tex.stackexchange.com/landing/r/digest?cta=question&id=700848

I start to appreciate the Latex3 expl library for the nice abstractions it gives (e.g. strings, listsa^\200\246), but I also want to create a code as efficient as possible as it is often my bottle neck. In ... 
[latex3]
 
asked by tobiasBora https://tex.stackexchange.com/landing/r/digest?cta=user&id=116348 Score of 6
answered by Joseph Wright https://tex.stackexchange.com/landing/r/digest?cta=user&id=73 Score of 9
9.75.1.5 Can't compile latex3 regexp

https://tex.stackexchange.com/landing/r/digest?cta=question&id=700794

I just wrote a code involving a simple regexp, but it is MUCH slower than a string search (at least 100x slower). So to optimize it, I tried to compile the regex, unfortunately it is giving me a ... 
[latex3]
 
asked by tobiasBora https://tex.stackexchange.com/landing/r/digest?cta=user&id=116348 Score of 6
answered by tobiasBora https://tex.stackexchange.com/landing/r/digest?cta=user&id=116348 Score of 5
9.75.1.6 I want to have exactly 12.5 mm between my figures/tikz figures. How do I do this?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=700989

For a project I am supposed to draw different graphs with edges and vertices. One of the points of the project is that the distance between the graphs should exactly be 12.5 mm, but I can't find a way ... 
[overleaf] [tikz-trees] [graphs] [figure-placement]
 
asked by Lisastronomy https://tex.stackexchange.com/landing/r/digest?cta=user&id=279824 Score of 5
answered by muzimuzhi Z https://tex.stackexchange.com/landing/r/digest?cta=user&id=79060 Score of 5
9.75.1.7 How can I connect all nodes with lines by using TikZ?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=700981

I'm working on the figure below, trying to connect all the vertices with multiple lines 
Is it possible to number the vertices from 1 to 60 and connect them all together? 
My attempts 
\begin{figure}[h] 
... 
[tikz-pgf] [diagrams]
 
asked by Emad kareem https://tex.stackexchange.com/landing/r/digest?cta=user&id=121554 Score of 5
answered by Jasper Habicht https://tex.stackexchange.com/landing/r/digest?cta=user&id=47927 Score of 11