fact: Definition 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 c d e => get_und_ver_cat_comp c d e.
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