∫ Утверждение Mathlib
subset_vonNeumann_self
Mathlib.SetTheory.ZFC.VonNeumann
URI: https://scilib.ai/kg/mathlib#ZFSet.subset_vonNeumann_self
∫ Утверждение Mathlib
Mathlib.SetTheory.ZFC.VonNeumann
URI: https://scilib.ai/kg/mathlib#ZFSet.subset_vonNeumann_self