Proposition cha_min_comm {H : complete_heyting_algebra} (x y : H) : (x ∧ y) = (y ∧ x). Proof. exact (iscomm_Lmin H x y). 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.