∫ Утверждение Mathlib
mem_span_singleton_self
Mathlib.RingTheory.Ideal.Span
URI: https://scilib.ai/kg/mathlib#Ideal.mem_span_singleton_self
∫ Утверждение Mathlib
Mathlib.RingTheory.Ideal.Span
URI: https://scilib.ai/kg/mathlib#Ideal.mem_span_singleton_self