8.40.1 Top new questions this week

8.40.1.1 What could be an efficient SublistQ command?
8.40.1.2 Solving a Caputo fractional diffusion equation in cylindrical coordinates
8.40.1.3 TextAlignment option broken in 13.1 on MacOS 13.0.1 (Reported to Wolfram)
8.40.1.4 Numerical solution of a partial derivative problem
8.40.1.5 Documentation Search : google-like (pokygon -> polygon)
8.40.1.6 Extracting surface from RegionPlot3D
8.40.1.7 Optimizing Code N-Body Simulation
8.40.1.1 What could be an efficient SublistQ command?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=277019

I know about  SubsetQ  but I could not find  SublistQ  such that  SublistQ[a, b]  would be true if ... 
[list-manipulation]
 
asked by   https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=35000 Score of 6
answered by userrandrand https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=86543 Score of 4
8.40.1.2 Solving a Caputo fractional diffusion equation in cylindrical coordinates

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=276896

I would like to solve this following equation with  d , the order of the factional derivative (in the sense of Caputo) : 
 
So I tried the following code : 
... 
[differential-equations] [numerical-integration] [heat-equation]
 
asked by ConfuzzledStudent https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=73052 Score of 6
answered by xzczd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1871 Score of 4
8.40.1.3 TextAlignment option broken in 13.1 on MacOS 13.0.1 (Reported to Wolfram)

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=276957

All of the cells in my notebooks that have the option TextAlignment->Center are broken since updating to MM 13.1.  It seems that the TextAlignment option does not update correctly as I change the ... 
[bugs] [user-interface]
 
asked by B flat https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=33996 Score of 5
answered by B flat https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=33996 Score of 0
8.40.1.4 Numerical solution of a partial derivative problem

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=276844

WARNING: a couple of days ago I posted a similar question, but due to the impossibility of  DirichletCondition[]  to handle "cross-coupling of dependent ... 
[differential-equations] [finite-element-method] [boundary-conditions]
 
asked by SMR https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=32491 Score of 5
answered by Ulrich Neumann https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53677 Score of 7
8.40.1.5 Documentation Search : google-like (pokygon -> polygon)

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=276928

If you search for "pokygon" in google.com, then google automatically fix error, and searches for "polygon". 
Like google.com, if you search for "pokygon" in mathematica (V ... 
[notebooks] [text] [documentation] [system] [searching]
 
asked by imida k https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34532 Score of 5
answered by Lukas Lang https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36508 Score of 5
8.40.1.6 Extracting surface from RegionPlot3D

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=276903

As in this question, I'd like to extract a surface from  RegionPlot3D . Unfortunately, the suggestion to use  ContourPlot3D  in that ... 
[plotting] [regions]
 
asked by Chris K https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=6358 Score of 5
answered by userrandrand https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=86543 Score of 3
8.40.1.7 Optimizing Code N-Body Simulation

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=276962

below is my code for a gravitational n-body problem. I know Mathematica has a n-body simulation function however I am programming this to learn Mathematica more and programming numerical techniques. ... 
[numerical-integration] [physics] [simulation]
 
asked by Carlos Villeda https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53269 Score of 4
answered by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318 Score of 1