Definition make_double_associator {C : category} {D : twosided_disp_cat C C} {Cm : hor_comp D} (a : double_associator_data Cm) (Ha : double_associator_laws a) : double_cat_associator Cm := a ,, Ha.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat. Require Import UniMath.CategoryTheory.TwoSidedDisplayedCats.Isos.