fact: Definition RezkCat : UU := ∏ C : category, ∑ D : univalent_category, ∑ H : functor C D, essentially_surjective H × fully_faithful H.
imports: UniMath.Foundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.Univalence