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Def subgroup.comap_subtype_equiv_of_le

Modification history

2022-11-30 13:42
src/group_theory/subgroup/basic.lean
refactor(subgroup/basic): use `subgroup.subgroup_of` as the normal form (#17744) …
Deleted subgroup.comap_subtype_equiv_of_leView on Github →
2021-09-15 02:43
src/group_theory/subgroup.lean
feat(group_theory/subgroup): Subgroup of subgroup is isomorphic to itself (#9204) …
Added subgroup.comap_subtype_equiv_of_leView on Github →