∫ Утверждение Mathlib
subtractionMonoid
Mathlib.Algebra.Group.TypeTags.Basic
URI: https://scilib.ai/kg/mathlib#Additive.subtractionMonoid
∫ Утверждение Mathlib
Mathlib.Algebra.Group.TypeTags.Basic
URI: https://scilib.ai/kg/mathlib#Additive.subtractionMonoid