Cache is_squarefree() for polynomials

[saraedum]

Just like is_irreducible(), but that method is only implemented in a single place.

Depends on #23164

Component: commutative algebra

Keywords: sd86.5

Author: Julian Rüth

Branch/Commit: 580a8e4

Reviewer: Nils Bruin

Issue created by migration from https://trac.sagemath.org/ticket/23182

[saraedum]

Dependencies: #23164

[saraedum]

Author: Julian Rüth

[saraedum]

Branch: u/saraedum/cache_polynomial_is_irreducible__

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

9c2a4e3	Added line to polynomial_element.pyx to allow caching and added doctests for cached methods.
9d9e878	Fix doctest error in sage/structure/misc.pyx
ffad85c	Merge branch 'u/roed/cache_polynomial_is_irreducible__' of git://trac.sagemath.org/sage into t/23164/cache_polynomial_is_irreducible__

[sagetrac-git]

Commit: ffad85c

[nbruin]

Reviewer: Nils Bruin

[vbraun]

comment:5

Merge conflict

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

580a8e4

Merge branch 'develop' into t/23182/cache_polynomial_is_irreducible__

[sagetrac-git]

Changed commit from ffad85c to 580a8e4

[saraedum]

comment:7

A doctest has been added in the same spot twice. Trivial merge conflict, so I am setting this back to positive review.

---

New commits:

580a8e4

Merge branch 'develop' into t/23182/cache_polynomial_is_irreducible__

[vbraun]

Changed branch from u/saraedum/cache_polynomial_is_irreducible__ to 580a8e4