∫ Утверждение Mathlib
instNonUnitalCommRing
Mathlib.RingTheory.HahnSeries.Multiplication
URI: https://scilib.ai/kg/mathlib#HahnSeries.instNonUnitalCommRing
∫ Утверждение Mathlib
Mathlib.RingTheory.HahnSeries.Multiplication
URI: https://scilib.ai/kg/mathlib#HahnSeries.instNonUnitalCommRing