∫ Утверждение Mathlib
isMultiplicative_one
Mathlib.NumberTheory.ArithmeticFunction
URI: https://scilib.ai/kg/mathlib#ArithmeticFunction.isMultiplicative_one
∫ Утверждение Mathlib
Mathlib.NumberTheory.ArithmeticFunction
URI: https://scilib.ai/kg/mathlib#ArithmeticFunction.isMultiplicative_one