∫ Утверждение Mathlib
hasZeroObject
Mathlib.Analysis.Normed.Group.SemiNormedGrp
URI: https://scilib.ai/kg/mathlib#SemiNormedGrp.hasZeroObject
∫ Утверждение Mathlib
Mathlib.Analysis.Normed.Group.SemiNormedGrp
URI: https://scilib.ai/kg/mathlib#SemiNormedGrp.hasZeroObject