Structure AddSubsemigroup

Modification history

2023-08-10 19:52
Mathlib/GroupTheory/Subsemigroup/Basic.lean
chore: banish `Type _` and `Sort _` (#6499) …
Modified AddSubsemigroupView on Github →
2022-12-26 12:39
Mathlib/GroupTheory/Subsemigroup/Basic.lean
Feat: port GroupTheory.Subsemigroup.Basic (#1180) …
Added AddSubsemigroupView on Github →