Mathlib Map

Theorems · Definition · logic and foundations

Iff.eq

∀ {a b : Prop}, (a ↔ b) → a = b

Alias of propext.

Defined in
Mathlib.Logic.Basic
Cited by
14 results in Mathlib
Foundations
Depth 2 from the axioms · uses propext

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Nothing in Mathlib beyond the foundations.

Cited by14

Results whose statement or proof uses this declaration.