11.59.1 Top new questions this week

11.59.1.1 Is that extra empty space below the `\xRightarrow`?
11.59.1.2 How to properly fill the area under a hyperbola arc in TikZ without fillbetween?
11.59.1.3 How to draw the stereographic projection in mathematics?
11.59.1.4 The forbidden nesting of matrices
11.59.1.5 LuaLaTeX Accessible PDF not validated by Yuja Panorama
11.59.1.6 How to draw thousands of icons in a Tikz picture?. When you try drawing only 50 icons, the error is ! Dimension too large
11.59.1.7 Why does docstrip plus memoization insert a newline/paragraph between two items?
11.59.1.1 Is that extra empty space below the `\xRightarrow`?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=750374

As I was browsing this excellent solution, it seemed that there exist extra empty space below the arrow: 
Is this a small bug or feature designed intentionally? Or is that elegant method to balance ... 
[amsmath] [mathtools]
 
asked by Explorer https://tex.stackexchange.com/landing/r/digest?cta=user&id=322482 Score of 9
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 7
11.59.1.2 How to properly fill the area under a hyperbola arc in TikZ without fillbetween?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=750414

I'm trying to color the area bounded by the hyperbola xA^\262a^\210\222yA^\262=1 the x-axis, and the origin 
O in TikZ. 
My current code is: 
\documentclass[11pt]{article} 
\usepackage{tikz} 
\begin{document} 
\begin{... 
[tikz-pgf] [backgrounds] [fill] [tikzlibrary]
 
asked by Sebastiano https://tex.stackexchange.com/landing/r/digest?cta=user&id=117876 Score of 9
answered by Juan CastaA~+-o https://tex.stackexchange.com/landing/r/digest?cta=user&id=231368 Score of 10
11.59.1.3 How to draw the stereographic projection in mathematics?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=750447

I have tried the following tikz-pgf code to draw the stereographic projection: 
\documentclass[tikz,border=10pt]{standalone} 
\usetikzlibrary{arrows.meta} 
\begin{document} 
\begin{tikzpicture}[scale=3] 
... 
[tikz-pgf] [mathematics] [gif]
                                                                                  

                                                                                  
 
asked by Learner https://tex.stackexchange.com/landing/r/digest?cta=user&id=335577 Score of 8
answered by Jasper https://tex.stackexchange.com/landing/r/digest?cta=user&id=319072 Score of 10
11.59.1.4 The forbidden nesting of matrices

https://tex.stackexchange.com/landing/r/digest?cta=question&id=750420

In tikz the nesting of matrices is strictly forbidden. One can write something like 
\[ 
\begin{tikzpicture} 
\matrix (m) [matrix of nodes,nodes={anchor=center}] { 
1 & \tikz{\draw(0,0)--(1,1)(0,1)--(... 
[tikz-pgf] [amsmath] [tikz-matrix]
 
asked by Ted Black https://tex.stackexchange.com/landing/r/digest?cta=user&id=236759 Score of 8
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 6
11.59.1.5 LuaLaTeX Accessible PDF not validated by Yuja Panorama

https://tex.stackexchange.com/landing/r/digest?cta=question&id=750324

I am having serious problems generating a PDF in TeX that passes my accessibility checker.  Below is a minimal working example that should produce an accessible PDF, but the checker highlights that ... 
[luatex] [pdf] [accessibility] [tagged-pdf] [alttext]
 
asked by layman https://tex.stackexchange.com/landing/r/digest?cta=user&id=46944 Score of 8
answered by Ulrike Fischer https://tex.stackexchange.com/landing/r/digest?cta=user&id=2388 Score of 12
11.59.1.6 How to draw thousands of icons in a Tikz picture?. When you try drawing only 50 icons, the error is ! Dimension too large

https://tex.stackexchange.com/landing/r/digest?cta=question&id=750540

The target is drawing 123000 over a pie chart (donA^\264t worry about people over people). But the problem is that with only 50 people is obtained the error: 
! Dimension too large. 
The 'mwe' runs well ... 
[tikz-pgf] [foreach] [lengths] [memory] [tikz-datavisualization]
 
asked by Mika Ike https://tex.stackexchange.com/landing/r/digest?cta=user&id=30549 Score of 7
answered by jlab https://tex.stackexchange.com/landing/r/digest?cta=user&id=316068 Score of 10
11.59.1.7 Why does docstrip plus memoization insert a newline/paragraph between two items?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=750440

Ref.:https://github.com/sasozivanovic/memoize/issues/50#issue-3370785926 
Two MWEs ... 
First MWE: 
% \iffalse 
%<*driver> 
\documentclass[10pt,a4paper]{ltxdoc} 
\usepackage[extract=python]{memoize} 
... 
[spacing] [vspace] [externalize] [docstrip] [memoize]
 
asked by cfr https://tex.stackexchange.com/landing/r/digest?cta=user&id=39222 Score of 7
answered by SaAo\[DownExclamation]o Ao\275ivanoviA"\207 https://tex.stackexchange.com/landing/r/digest?cta=user&id=16819 Score of 7