∫ Утверждение Mathlib
instInhabited
Mathlib.Topology.Sets.Opens
URI: https://scilib.ai/kg/mathlib#TopologicalSpace.OpenNhdsOf.instInhabited
∫ Утверждение Mathlib
Mathlib.Topology.Sets.Opens
URI: https://scilib.ai/kg/mathlib#TopologicalSpace.OpenNhdsOf.instInhabited