AS

Results 3 issues of AS

### Is your feature request related to a problem? Please describe. I tried to LU factorize sparse matrices using scipy.sparse.linalg.splu (uses SuperLU). But it raised an error saying only supported...

enhancement
scipy.sparse.linalg

Tested and working for 3x2 and 4x2 matrices, not working for 2x3 and 2x4 matrices The pull request is for the [issue #20164 ](https://github.com/scipy/scipy/issues/20164#issue-2161252310) Did not write tests yet -...

enhancement
scipy.sparse.linalg

### Describe your change: * [x] Add an algorithm? * [ ] Fix a bug or typo in an existing algorithm? * [ ] Add or change doctests? -- Note:...

awaiting reviews
tests are failing
require tests
require type hints
require descriptive names