Theorems · Theorem

Function.ne_iff

∀ {α : Sort u_1} {β : α → Sort u_4} {f₁ f₂ : (a : α) → β a}, f₁ ≠ f₂ ↔ ∃ a, f₁ a ≠ f₂ a

Defined in: Mathlib.Logic.Function.Basic
Cited by: 40 results in Mathlib
Foundations: Depth 13 from the axioms · uses propext, Classical.choice, Quot.sound

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