Definition unit_bounded_lattice : bounded_lattice unitset. Proof. use make_bounded_lattice. - exact unit_lattice. - exact tt. - exact tt. - abstract (split ; intro ; intros ; apply isapropunit). Defined.
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.