8.21.1 Top new questions this week

8.21.1.1 Why does one need to restart the PC now after installing V 13.1?
8.21.1.2 Performance regression for big integer computation
8.21.1.3 How can I create an atomic head or treat some head as atomic during Map?
8.21.1.4 protein visualization: display a residue in balls and sticks over the structure
8.21.1.5 Solving a Simple 'Sum and Product' Problem
8.21.1.6 How to insert AutomaticNumbering programmatically?
8.21.1.7 How to replace anti diagonal elements of a matrix
8.21.1.1 Why does one need to restart the PC now after installing V 13.1?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270127

I've installed Mathematica new releases before on my PC. 
This is the first time it asks to restart the PC at the end of the installation of V 13.1. This is on windows 10. 
 
The question is, why in this ... 
[installation]
 
asked by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 Score of 17
answered by ihojnicki https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18638 Score of 18
8.21.1.2 Performance regression for big integer computation

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270005

Backslide introduced in 12.0, persisting through 13.1. 
 
Recently I noticed that the big integer calculation of the new version is much slower than the old version, can you reproduce, is there a way to ... 
[performance-tuning] [big-numbers] [backslide]
 
asked by expression https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7339 Score of 12
answered by Sjoerd Smit https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=43522 Score of 4
8.21.1.3 How can I create an atomic head or treat some head as atomic during Map?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=269970

For example, 
 Map[g, {0, {h[1, 2, 3]}}, {-1}] 
 
gives 
 {g[0], {h[g[1], g[2], g[3]]}} 
 
I want a ... 
[list-manipulation] [core-language] [map] [undocumented] [head]
 
asked by matheorem https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4742 Score of 11
answered by Alexey Popkov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=280 Score of 13
8.21.1.4 protein visualization: display a residue in balls and sticks over the structure

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=269892

I am trying to visualize a cytochrome c protein and display one of the residues in ball and sticks over it. 
I am using the PDB file 1AKK for it (https://www.rcsb.org/structure/1akk). The Import ... 
[graphics3d] [chemistry]
 
asked by J. Rouxel https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34773 Score of 10
answered by Jason B. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9490 Score of 8
8.21.1.5 Solving a Simple 'Sum and Product' Problem

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=269905

I am trying to solve a simple 'sum and product' problem.  Basically, the sum of four prices and the product of those four prices are numerically equal (you must, of course, disregard the units).  The ... 
[equation-solving] [findinstance]
 
asked by JoeMarino https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=87115 Score of 9
answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111 Score of 13
8.21.1.6 How to insert AutomaticNumbering programmatically?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270055

Preamble: I often work with the JournalArticle Stylesheet and use in it the styles "Figure" for graphics and "FigurCaption" for the corresponding caption. The figures should be ... 
[notebooks] [cells] [numbering]
 
asked by Alexei Boulbitch https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=788 Score of 7
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 Score of 5
8.21.1.7 How to replace anti diagonal elements of a matrix

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=269854

I want to assign new values to the anti-diagonal elements of a square matrix  m  with the values of its diagonal elements. For that, I want to make use of ... 
[list-manipulation] [matrix] [replacement]
 
asked by tush https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=62632 Score of 7
answered by lericr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=84894 Score of 5