∫ Утверждение Mathlib
instAddSemigroup
Mathlib.Algebra.Algebra.Unitization
URI: https://scilib.ai/kg/mathlib#Unitization.instAddSemigroup
∫ Утверждение Mathlib
Mathlib.Algebra.Algebra.Unitization
URI: https://scilib.ai/kg/mathlib#Unitization.instAddSemigroup