∫ Утверждение Mathlib
of_map_subtype
Mathlib.Algebra.Group.Subgroup.Basic
URI: https://scilib.ai/kg/mathlib#Subgroup.Normal.of_map_subtype
∫ Утверждение Mathlib
Mathlib.Algebra.Group.Subgroup.Basic
URI: https://scilib.ai/kg/mathlib#Subgroup.Normal.of_map_subtype