Definition cha_basis_incl {H : complete_heyting_algebra} {B : cha_basis_data H} (b : B) : H := pr12 B 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.