proposition: Lemma fld_iso_equiv (X Y : ob fld_category) : z_iso X Y -> ringiso (X : fld) (Y : fld).
proof: Proof. intro f. use make_ringiso. - exact (make_weq (pr1 (pr1 f)) (fld_iso_is_equiv X Y f)). - exact (pr2 (pr1 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.Algebra.Domains_and_Fields UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence