Mathlib v3 is deprecated. Go to Mathlib v4

Structure is_subgroup

Modification history

2021-08-01 17:17
src/deprecated/subgroup.lean
chore(deprecated/*): Make deprecated classes into structures (#8178) …
Added is_subgroupView on Github →
2018-04-10 13:02
group_theory/subgroup.lean
refactor(algebra): move is_submonoid to group_theory and base is_subgroup on is_submonoid
Deleted is_subgroupView on Github →
2018-03-10 13:38
group_theory/subgroup.lean
feat(group_theory): add a little bit of group theory; prove of Lagrange's theorem
Added is_subgroupView on Github →