∫ Утверждение Mathlib
diff_insert_of_notMem
Mathlib.Order.BooleanAlgebra.Set
URI: https://scilib.ai/kg/mathlib#Set.diff_insert_of_notMem
∫ Утверждение Mathlib
Mathlib.Order.BooleanAlgebra.Set
URI: https://scilib.ai/kg/mathlib#Set.diff_insert_of_notMem