proposition: Lemma isinvplushrelnatlth : @isinvbinophrel nataddabmonoid natlth.
proof: Proof. split. - intros a b c. apply (natgthandpluslinv b a c). - intros a b c. apply (natgthandplusrinv b a c). Defined.
imports: UniMath.Foundations.NaturalNumbers UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.NegativePropositions UniMath.Algebra.Archimedean UniMath.Algebra.Domains_and_Fields UniMath.Algebra.IteratedBinaryOperations