Proposition cha_runit_max_bot {H : complete_heyting_algebra} (x : H) : (x ∨ ⊥) = x. Proof. rewrite cha_max_comm. apply cha_lunit_max_bot. 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.