EnumeratedSets.ParentMethods.map uses MapCombinatorialClass.

map's docstring explains that that class needs to be refactored to use categories.

Part of #12913 (Meta-ticket: Deprecate CombinatorialClass in favor of the EnumeratedSet's categories)

See also:

• #31653 comment:1 for a discussion of existing image and pushforward methods of maps.

• ConditionSet, ImageSet: Implement formal Set comprehension #24176

CC: @tscrim @fchapoton @roed314 @mwageringel

Component: combinatorics

Author: Matthias Koeppe, Travis Scrimshaw

Branch/Commit: 038e354

Reviewer: Travis Scrimshaw, Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/32121