∫ Утверждение Mathlib
isClosed_preimage_val_coborder
Mathlib.Topology.LocallyClosed
URI: https://scilib.ai/kg/mathlib#isClosed_preimage_val_coborder
∫ Утверждение Mathlib
Mathlib.Topology.LocallyClosed
URI: https://scilib.ai/kg/mathlib#isClosed_preimage_val_coborder