divRadical for polynomials

[seewoo5]

---

Some theorems on divRadical for polynomials.

• depends on: [Merged by Bors] - feat: dividing an element of a euclidean domain by its radical #18449

[github-actions]

PR summary 66c3db7b50

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference
Mathlib.RingTheory.Polynomial.Radical	1130

---

Declarations diff

+ divRadical_dvd_derivative
+ divRadical_dvd_wronskian_left
+ divRadical_dvd_wronskian_right

You can run this locally as follows

## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>

The doc-module for script/declarations_diff.sh contains some details about this script.

[mathlib4-dependent-issues-bot]

This PR/issue depends on:

• [Merged by Bors] - feat: dividing an element of a euclidean domain by its radical #18449
  By Dependent Issues (🤖). Happy coding!