gh-35060: a bijectionist's toolkit
We provide a toolkit for the combinatorialist to help find functions
("statistics") s: A -> Z and bijections A -> B given sequences of finite
sets A and B that satisfy various constraints.
Closes #33238
### 📝 Checklist
- [x] I have made sure that the title is self-explanatory and the
description concisely explains the PR.
- [x] I have linked an issue or discussion.
- [x] I have created tests covering the changes.
- [x] I have updated the documentation accordingly.
URL: https://github.com/sagemath/sage/pull/35060
Reported by: Martin Rubey
Reviewer(s): Martin Rubey, Matthias Köppe, Travis Scrimshaw
Committer
Release Manager
