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Theorem multiplicative.normal_subgroup

Modification history

2021-08-01 17:17
src/deprecated/subgroup.lean
chore(deprecated/*): Make deprecated classes into structures (#8178) …
Deleted multiplicative.normal_subgroupView on Github →
2020-06-01 23:39
src/deprecated/subgroup.lean
chore(group_theory/sub*): move unbundled submonoids and subgroups to `deprecated` (#2912) …
Modified multiplicative.normal_subgroupView on Github →
2020-03-09 00:56
src/group_theory/subgroup.lean
fix(deprecated/group): remove dangerous instances (#2096)
Added multiplicative.normal_subgroupView on Github →