Proposition cha_to_le_exp {H : complete_heyting_algebra} {x y z : H} (p : (z ∧ x) ≤ y) : z ≤ (x ⇒ y). Proof. exact (pr2 (pr2 (pr222 H) x y z) p). Qed.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.OrderTheory.Lattice.Lattice. Require Import UniMath.OrderTheory.Lattice.Bounded. Require Import UniMath.OrderTheory.Lattice.Heyting.