Theorem MonoidHom.mem_ker

Modification history

2024-09-24 11:40
Mathlib/Algebra/Group/Subgroup/Basic.lean
refactor: Make `mem_ker` be simp (#17021) …
Modified MonoidHom.mem_kerView on Github →
2023-01-26 10:26
Mathlib/GroupTheory/Subgroup/Basic.lean
feat: port GroupTheory.Subgroup.Basic (#1797)
Added MonoidHom.mem_kerView on Github →