<div id="comment:0"></div> This ticket is for the parent classes. The `is_...` methods for element classes will be taken care of in #24525. Depends on #32566 Depends on #32610 Depends on #32606 CC: @kliem @tscrim Component: **refactoring** Author: **Matthias Koeppe** Branch/Commit: **[`124f213`](https://github.com/sagemath/sagetrac-mirror/commit/124f2130758eb93996dd7de31b0e97762b2e2e1d)** Reviewer: **Travis Scrimshaw** _Issue created by migration from https://trac.sagemath.org/ticket/32612_