fact: Definition hom_ob_mor : precategory_ob_mor := make_precategory_ob_mor (C⟦a,b⟧) (λ (f g : C⟦a,b⟧), f ==> g).
imports: UniMath.Tactics.EnsureStructuredProofs UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.PrecategoryBinProduct