∫ Утверждение Mathlib
preimage_injective
Mathlib.Data.Set.Image
URI: https://scilib.ai/kg/mathlib#Function.Surjective.preimage_injective
∫ Утверждение Mathlib
Mathlib.Data.Set.Image
URI: https://scilib.ai/kg/mathlib#Function.Surjective.preimage_injective