fact: Definition three_disp : disp_cat (arrow C) := (three_data,, three_axioms).
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.PrecategoryBinProduct UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.DisplayedCats.Total UniMath.CategoryTheory.Limits.Graphs.Colimits UniMath.CategoryTheory.DisplayedCats.Examples.Arrow