Mathlib Changelog
v4
Changelog
About
Github
Theorem
Subsemigroup.map_equiv_eq_comap_symm
Modification history
2022-12-31 09:21
Mathlib/GroupTheory/Subsemigroup/Operations.lean
feat: port GroupTheory.Subsemigroup.Operations (#1235)
Added
Subsemigroup.map_equiv_eq_comap_symm
View on Github →