∫ Утверждение Mathlib
_aux_Mathlib_Topology_Defs_Basic___macroRules_Topology_IsOpen_of_1
Mathlib.Topology.Defs.Basic
URI: https://scilib.ai/kg/mathlib#Topology._aux_Mathlib_Topology_Defs_Basic___macroRules_Topology_IsOpen_of_1
∫ Утверждение Mathlib
Mathlib.Topology.Defs.Basic
URI: https://scilib.ai/kg/mathlib#Topology._aux_Mathlib_Topology_Defs_Basic___macroRules_Topology_IsOpen_of_1