Set.exists_image_eq_and_injOn

∀ {α : Type u_1} {β : Type u_2} (s : Set α) (f : α → β), ∃ u, f '' u = f '' s ∧ Set.InjOn f u

Defined in: Mathlib.Data.Set.Function
Cited by: 1 results in Mathlib
Foundations: Depth 30 from the axioms · uses propext, Classical.choice, Quot.sound

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