Theorem Subgroup.le_normalizer_of_normal

Modification history

2026-03-23 08:24
Mathlib/Algebra/Group/Subgroup/Basic.lean
feat(Algebra/Group/Subgroup/Defs): merge `setNormalizer` into `normalizer` (#36852) …
Modified Subgroup.le_normalizer_of_normalView on Github →
2025-03-25 08:54
Mathlib/Algebra/Group/Subgroup/Basic.lean
feat(Algebra/Group/Subgroup, GroupTheory/QuotientGroup): strengthen second isomorphism theorem for groups (#22650) …
Modified Subgroup.le_normalizer_of_normalView on Github →
2023-01-26 10:26
Mathlib/GroupTheory/Subgroup/Basic.lean
feat: port GroupTheory.Subgroup.Basic (#1797)
Added Subgroup.le_normalizer_of_normalView on Github →