∫ Утверждение Mathlib
singleton_vsub_singleton
Mathlib.Algebra.Group.Pointwise.Set.Scalar
URI: https://scilib.ai/kg/mathlib#Set.singleton_vsub_singleton
∫ Утверждение Mathlib
Mathlib.Algebra.Group.Pointwise.Set.Scalar
URI: https://scilib.ai/kg/mathlib#Set.singleton_vsub_singleton