Theorem Subgroup.Normal.quotient_commutative_iff_commutator_le

Modification history

2025-07-23 15:29
Mathlib/GroupTheory/Abelianization.lean
chore(GroupTheory/FreeAbelianGroup): do not import cardinals (#27169) …
Modified Subgroup.Normal.quotient_commutative_iff_commutator_leView on Github →
2025-02-07 14:21
Mathlib/GroupTheory/Abelianization.lean
feat(GroupTheory/GroupAction/Iwasawa): the Iwasawa criterion for simplicity (#12048) …
Added Subgroup.Normal.quotient_commutative_iff_commutator_leView on Github →