∫ Утверждение Mathlib
card_inter_smul
Mathlib.Combinatorics.Additive.Convolution
URI: https://scilib.ai/kg/mathlib#Finset.card_inter_smul
∫ Утверждение Mathlib
Mathlib.Combinatorics.Additive.Convolution
URI: https://scilib.ai/kg/mathlib#Finset.card_inter_smul