fact: Definition z_iso_is_inverse_in_precat {C : precategory_data} {a b : C} (i : z_iso a b) : is_inverse_in_precat i (inv_from_z_iso i) := pr2 i.
imports: UniMath.Foundations.PartA UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.Tactics UniMath.CategoryTheory.Core.Categories