2021-09-09 14:10
src/group_theory/group_action/defs.lean
feat(group_theory/sub{monoid,group}): pointwise actions on `add_sub{monoid,group}`s and `sub{monoid,group,module,semiring,ring,algebra}`s (#8945) …
Deleted mul_distrib_mul_action.to_monoid_hom_one