∫ Утверждение Mathlib
mul_zero_subset
Mathlib.Algebra.GroupWithZero.Pointwise.Set.Basic
URI: https://scilib.ai/kg/mathlib#Set.mul_zero_subset
∫ Утверждение Mathlib
Mathlib.Algebra.GroupWithZero.Pointwise.Set.Basic
URI: https://scilib.ai/kg/mathlib#Set.mul_zero_subset