Proposition cha_and_monotone_r {H : complete_heyting_algebra} {x y₁ y₂ : H} (q : y₁ ≤ y₂) : (x ∧ y₁) ≤ (x ∧ y₂). Proof. refine (cha_and_monotone _ q). apply cha_le_refl. Qed.
Require Import UniMath.MoreFoundations.All. Require Import UniMath.Algebra.BinaryOperations. Require Import UniMath.OrderTheory.Lattice.Lattice. Require Import UniMath.OrderTheory.Lattice.Bounded. Require Import UniMath.OrderTheory.Lattice.Heyting. Require Import UniMath.OrderTheory.Lattice.CompleteHeyting.