Mathlib Map

Theorems · Definition · order theory

bihimp

{α : Type u_2} → [Min α] → [HImp α] → α → α → α

The Heyting bi-implication is (b ⇨ a) ⊓ (a ⇨ b). This generalizes equivalence of propositions.

Defined in
Mathlib.Order.SymmDiff
Cited by
81 results in Mathlib
Foundations
Depth 2 from the axioms · uses no axioms
Assumes
MinHImp

Around this declaration

Dashed lines are statement dependencies; solid lines are citations in proofs.

Cites2

Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.

  • HImp.himpproof · cited by 153
  • HImpstatement and proof · cited by 7

Cited by81

Results whose statement or proof uses this declaration.