8.22.3 Can you answer these questions?

8.22.3.1 Possible bug in ResidueSum

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270241

Trying a new command of version 13.1  ResidueSum , I obtain 
 FunctionMeromorphic[{(x^2 - x + 2)/x, Abs[x] > 5}, x] 
 
 
... 
[calculus-and-analysis] [bugs] [complex]
 

asked by user64494 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7152 Score of 3

8.22.3.2 Sorting of a list of lists - i.e. list of matrices - what is the order of the sort determined by?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270478

In the documentation we have: 
Sort[list] sorts the elements of list into canonical order. 
Maybe I am missing something but what does "canonical order" mean for sorting a list of matrices? 
... 
[list-manipulation] [matrix] [sorting]
                                                                                  

                                                                                  
 

asked by 1729taxi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=84472 Score of 2

answered by Flow https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=86590 Score of 0

8.22.3.3 Solve PDE with consraints

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270267

I am trying to solve the following problem of the free fall dynamics under gravity of a inextensible horizontal string attached at its end, in a 2D vertical plane. If I'm right, that is the governing ... 
[differential-equations] [numerical-integration] [finite-element-method]
 

asked by anderstood https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18767 Score of 3