Definition po_precategory_has_homsets (PO : po X) : has_homsets (po_precategory_ob_mor PO). Proof. intros ? ?. apply hlevelntosn. apply po_homsets_isaprop. Defined.
Require Import UniMath.Foundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Univalence.