fact: Definition get_und_ver_cat_comp {C: predoublecategory_hor_sq} (c d e : (und_ver_cat_ob C)) : und_ver_cat_ob_mor C c d → und_ver_cat_ob_mor C d e → und_ver_cat_ob_mor C c e := fun α β => make_und_ver_cat_ob_mor ( (pr22 α) ·sqh (pr22 β)).
imports: UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.PartA UniMath.MoreFoundations.Notations UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.CategoryTheory.TwoSidedDisplayedCats.Univalence