∫ Утверждение Mathlib
instNonUnitalCommRing
Mathlib.Algebra.Ring.Opposite
URI: https://scilib.ai/kg/mathlib#AddOpposite.instNonUnitalCommRing
∫ Утверждение Mathlib
Mathlib.Algebra.Ring.Opposite
URI: https://scilib.ai/kg/mathlib#AddOpposite.instNonUnitalCommRing