7.69.1 Top new questions this week

7.69.1.1 Halloweenmath contest (in memory of GuM)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=620788

Halloween makes me remember our dear friend GuM, who passed away this year in January. 
I was thinking of a way to celebrate him. 
I would like to ask you to show us something written with his probably ... 
[fun]
 

asked by CarLaTeX https://tex.stackexchange.com/landing/r/digest?cta=user&id=101651 49 votes

answered by Sebastiano https://tex.stackexchange.com/landing/r/digest?cta=user&id=117876 25 votes

7.69.1.2 Create fancy environment in Tikz

https://tex.stackexchange.com/landing/r/digest?cta=question&id=620875

Trying to prepare homeschool reading material for kids in lockdown and I would love to use an environment like the one below: 
I adapted codes from enter link description here 
Credit @SebGlav and made ... 
[tcolorbox] [tikz-styles]
 

asked by Kidegalize https://tex.stackexchange.com/landing/r/digest?cta=user&id=244658 18 votes

answered by David Purton https://tex.stackexchange.com/landing/r/digest?cta=user&id=87678 29 votes

7.69.1.3 What is the role of the different entities (TexLive, pdlatex, latexmk) in the LaTeX ecosystem?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=620596

I used to just compile my tex files using overleaf, which took care of everything under the hood. Now I'm trying to figure out what the different programs do. I know that e.g. Texlive and MikTex ... 
[pdftex] [texlive] [latexmk]
                                                                                  

                                                                                  
 

asked by user56834 https://tex.stackexchange.com/landing/r/digest?cta=user&id=147982 16 votes

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 24 votes

7.69.1.4 How to draw this picture (draw arrows in middle of a loop generated by 'control', make break ) using tikz

https://tex.stackexchange.com/landing/r/digest?cta=question&id=621085

I would like to draw this picture by [tikz]. The elliptic and circle are easy, and I use 'control' to draw the red loop. But I do not know how to draw the arrow in the middle of the loop and do not ... 
[tikz-pgf] [tikz-knots]
 

asked by Anthon Lau https://tex.stackexchange.com/landing/r/digest?cta=user&id=255920 8 votes

answered by Andrew Stacey https://tex.stackexchange.com/landing/r/digest?cta=user&id=86 7 votes

7.69.1.5 Drawing Jet Balloon With Varying Thickness

https://tex.stackexchange.com/landing/r/digest?cta=question&id=620948

I would like to have a PSTricks drawing of the following picture: 
I have no problem drawing the arrows, but I have absolutely no idea how to draw the two ellipses do to the varying linewidth. 
The ... 
[pstricks]
 

asked by Svend TveskA~\246g https://tex.stackexchange.com/landing/r/digest?cta=user&id=15874 8 votes

answered by I Eat Pork Every Single Day https://tex.stackexchange.com/landing/r/digest?cta=user&id=87876 9 votes

7.69.1.6 If condition with non integer numbers in Tikz

https://tex.stackexchange.com/landing/r/digest?cta=question&id=621079

I have the following code to build the derivates of a given function: 
\documentclass[tikz, border=.5cm]{standalone} 
\usepackage{tkz-fct} 
\usepackage{xfp} 
\usetikzlibrary{spy} 
\definecolor{vinho}{rgb}{... 
[tikz-pgf] [conditionals] [draw] [ifthenelse]
 

asked by Angelo Aliano Filho https://tex.stackexchange.com/landing/r/digest?cta=user&id=205932 8 votes

answered by Jasper Habicht https://tex.stackexchange.com/landing/r/digest?cta=user&id=47927 8 votes

7.69.1.7 Write Author names in all CAPS - but only if it is a person

https://tex.stackexchange.com/landing/r/digest?cta=question&id=620980

Environment: scrartcl, biblatex with biber backend, style authortitle with some modifications 
My educational institution requires me to write the last names of every author in CAPS. To do this, I used ... 
[biblatex] [biber] [scrartcl]
 

asked by Colin P https://tex.stackexchange.com/landing/r/digest?cta=user&id=255865 8 votes

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