Set.image2_eq_empty_iff

∀ {α : Type u_1} {β : Type u_3} {γ : Type u_5} {f : α → β → γ} {s : Set α} {t : Set β},
  Set.image2 f s t = ∅ ↔ s = ∅ ∨ t = ∅

Defined in: Mathlib.Data.Set.NAry
Cited by: 10 results in Mathlib
Foundations: Depth 27 from the axioms · uses propext, Classical.choice, Quot.sound

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