1) Here
I just found the relevant community group.
The attached notebooks and papers there are very interesting. Where is better to continue the discussion with additional questions (if needed)?
2) At the discussion you linked: Stan Gianzero question && answers
3) At the related review discussion: Inverse of a (m,m)-Matrix whose elements are (n,n)-Matrices
Best regards,
Alberto
Done, thank you for the clue.
Actually it is working, Alberto. Simply use copy and paste.
Thank you for your early answer, but the link is not working.
May be you find some ideas here
https://community.wolfram.com/groups/-/m/t/1651695
(the link may be not complete)
Especially in the notebooks at the end
