proposition: Lemma Quotcategory_isPreAdditive : isPreAdditive Quotcategory_abgrops.
proof: Proof. use make_isPreAdditive'. - intros x y z f g h. exact (PreAdditive_pre_linear x y z f g h). - intros x y z f. exact (PreAdditive_pre_unel x y z f). - intros x y z f g h. exact (PreAdditive_post_linear x y z f g h). - intros x y z f. exact (PreAdditive_post_unel x y z f). Qed.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.PartA UniMath.Algebra.BinaryOperations UniMath.Algebra.Monoids UniMath.Algebra.Groups UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Monics UniMath.CategoryTheory.Epis UniMath.CategoryTheory.PrecategoryBinProduct UniMath.CategoryTheory.CategoriesWithBinOps UniMath.CategoryTheory.PrecategoriesWithAbgrops UniMath.CategoryTheory.opp_precat UniMath.CategoryTheory.Limits.Zero UniMath.CategoryTheory.Limits.Kernels UniMath.CategoryTheory.Limits.Cokernels