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Theorem subgroup.normal_closure_le_normal

Modification history

2020-09-11 15:53
src/group_theory/subgroup.lean
cleanup(group_theory/presented_group): () -> [], and remove some FIXMEs (#4076)
Modified subgroup.normal_closure_le_normalView on Github →
2020-06-10 00:06
src/group_theory/subgroup.lean
feat(group_theory/subgroup): normal_closure and gpowers (#2959) …
Added subgroup.normal_closure_le_normalView on Github →