fact: Definition hor_comp {C : category} (D : twosided_disp_cat C C) : UU := ∑ (Cm : hor_comp_data D), hor_comp_laws Cm.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.CategoryTheory.TwoSidedDisplayedCats.Isos