proposition: Lemma rig_equiv_z_iso (X Y : ob rig_category) : rigiso (X : rig) (Y : rig) -> z_iso X Y.
proof: Proof. intros f. exists (rigfunconstr (pr2 f)). exact (rig_equiv_is_z_iso X Y f). Defined.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.Foundations.UnivalenceAxiom UniMath.Algebra.BinaryOperations UniMath.Algebra.Monoids UniMath.Algebra.RigsAndRings UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence