proposition: Lemma isdecrelhzeqi (i : hz) : isdecrelhzeq i i = ii1 (idpath _).
proof: Proof. induction (isdecrelhzeq i i) as [T | F]. - apply maponpaths. apply isasethz. - apply fromempty. apply F. apply idpath. Qed.
imports: UniMath.Foundations.NaturalNumbers UniMath.MoreFoundations.PartA UniMath.MoreFoundations.NegativePropositions UniMath.Algebra.Monoids UniMath.Algebra.Groups UniMath.Algebra.RigsAndRings UniMath.NumberSystems.NaturalNumbersAlgebra