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Theorems · Theorem · combinatorics

List.Nodup.map_on

∀ {α : Type u} {β : Type v} {l : List α} {f : α → β},
  (∀ x ∈ l, ∀ y ∈ l, f x = f y → x = y) → l.Nodup → (List.map f l).Nodup
Defined in
Mathlib.Data.List.Nodup
Cited by
4 results in Mathlib
Foundations
Depth 20 from the axioms · uses propext, Quot.sound

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