Frédéric Chapoton

move Frobenius and derivations to category of Commutative Rings

3

move three methods from the class `CommutativeRing` to the category of commutative rings ### :memo: Checklist - [x] The title is concise and informative. - [x] The description explains in...

work on letterplace algebras

2

Moving the letterplace implementation of free algebras to the `Parent` framework ### :memo: Checklist - [x] The title is concise and informative. - [x] The description explains in detail what...

cython-lint in quivers/

1

fixing some cython-lint suggestions in the quivers folder ```cython-lint --ignore=E501,E128,E741 src/sage/quivers/``` ### :memo: Checklist - [x] The title is concise and informative. - [x] The description explains in detail what...

simplify handling of dead oeis sequences

4

Simplify the handling of dead OEIS sequences. Trying to ignore them, mostly. This fixes #38044 ### :memo: Checklist - [x] The title is concise and informative. - [x] The description...

using pathlib.Path to handle attached files

5

Let us use `pathlib.Path` to handle the attached files. This make the code cleaner. ### :memo: Checklist - [x] The title is concise and informative. - [x] The description explains...

cython-lint for schemes

3

fixing a few more cython-lint suggestions in schemes ```cython-lint --ignore=E501,E231,E265 src/sage/schemes/``` ### :memo: Checklist - [x] The title is concise and informative. - [x] The description explains in detail what...

avoid using reserved min and max in two files

5

and other minor code details in the modified files also some doctest formatting ### :memo: Checklist - [x] The title is concise and informative. - [x] The description explains in...

deprecate the class "Algebra"

2

deprecate the auld-style "Algebra" class, and replace its last use in sage codebase by `Parent` ### :memo: Checklist - [x] The title is concise and informative. - [x] The description...

various minor details in the modified file ### :memo: Checklist - [x] The title is concise and informative. - [x] The description explains in detail what this PR is about.

details in moment-angle complex

2

avoid using as variable the reserved keyword `dict` + minor other details + similar changes in other files in topology folder ### :memo: Checklist - [x] The title is concise...