Theorem IsSubgroup.trivial_normal

Modification history

2024-06-04 05:31
Mathlib/Deprecated/Subgroup.lean
chore: remove some `refine'` replacing `refine_struct` (#13490) …
Modified IsSubgroup.trivial_normalView on Github →
2023-01-27 13:20
Mathlib/Deprecated/Subgroup.lean
feat: port `Deprecated.Subgroup` (#1876)
Added IsSubgroup.trivial_normalView on Github →