∫ Утверждение Mathlib
lowerSemicontinuousOn_indicator
Mathlib.Topology.Semicontinuous
URI: https://scilib.ai/kg/mathlib#IsOpen.lowerSemicontinuousOn_indicator
∫ Утверждение Mathlib
Mathlib.Topology.Semicontinuous
URI: https://scilib.ai/kg/mathlib#IsOpen.lowerSemicontinuousOn_indicator