Def Subgroup.opEquiv

Modification history

2024-01-26 19:09
Mathlib/GroupTheory/Subgroup/MulOpposite.lean
feat: Add lattice lemmas about `Sub{group,monoid}.{op,unop}` (#9860) …
Modified Subgroup.opEquivView on Github →
2023-09-28 12:57
Mathlib/GroupTheory/Subgroup/MulOpposite.lean
feat(GroupTheory/Submonoid): add opposite submonoids (#7415) …
Added Subgroup.opEquivView on Github →