Definition cha_basis (H : complete_heyting_algebra) : UU := ∑ (B : cha_basis_data H), cha_basis_laws B.
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.