∫ Утверждение Mathlib
instAddCommSemigroup
Mathlib.Analysis.CStarAlgebra.CStarMatrix
URI: https://scilib.ai/kg/mathlib#CStarMatrix.instAddCommSemigroup
∫ Утверждение Mathlib
Mathlib.Analysis.CStarAlgebra.CStarMatrix
URI: https://scilib.ai/kg/mathlib#CStarMatrix.instAddCommSemigroup