Proposition cha_exp_eval {H : complete_heyting_algebra} (x y : H) : ((x ⇒ y) ∧ x) ≤ y. Proof. use cha_from_le_exp. apply cha_le_refl. 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.