∫ Утверждение Mathlib
mem_closure_singleton_self
Mathlib.Algebra.Group.Subgroup.Lattice
URI: https://scilib.ai/kg/mathlib#Subgroup.mem_closure_singleton_self
∫ Утверждение Mathlib
Mathlib.Algebra.Group.Subgroup.Lattice
URI: https://scilib.ai/kg/mathlib#Subgroup.mem_closure_singleton_self