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Theorem subgroup.le_normalizer_of_normal

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) …
Modified subgroup.le_normalizer_of_normalView on Github →
2020-09-11 15:53
src/group_theory/subgroup.lean
cleanup(group_theory/presented_group): () -> [], and remove some FIXMEs (#4076)
Modified subgroup.le_normalizer_of_normalView on Github →
2020-06-10 00:06
src/group_theory/subgroup.lean
feat(group_theory/subgroup): normal_closure and gpowers (#2959) …
Modified subgroup.le_normalizer_of_normalView on Github →
2020-06-05 05:31
src/group_theory/subgroup.lean
feat(group_theory/subgroup): define normal bundled subgroups (#2947) …
Added subgroup.le_normalizer_of_normalView on Github →