proposition: Lemma KAOctaMor3Iso1 {x y z : Complex A} (f1 : Morphism x y) (f2 : Morphism y z) (i : hz) : (MorphismComp (KAOctaMor3 f1 f2) (KAOctaMor3Inv f1 f2)) i = (IdMor (MappingCone A f2)) i.
proof: Proof. unfold KAOctaMor3, KAOctaMor3Inv, KAOctaMor3InvMor. cbn. set (DS1 := to_BinDirectSums A (x (i + 1 + 1)) (y (i + 1))). set (DS2 := to_BinDirectSums A (x (i + 1)) (z i)). set (DS3 := to_BinDirectSums A DS1 DS2). set (DS4 := to_BinDirectSums A (y (i + 1)) (z i)). rewrite to_postmor_linear'. rewrite to_premor_linear'. rewrite to_premor_linear'. rewrite to_premor_linear'. rewrite to_premor_linear'. rewrite assoc. rewrite assoc. rewrite assoc. rewrite assoc. rewrite assoc. rewrite assoc. rewrite assoc. rewrite assoc. rewrite assoc. rewrite assoc. rewrite assoc. rewrite assoc. rewrite assoc. rewrite assoc. rewrite <- (assoc _ (to_In1 DS3)). rewrite <- (assoc _ (to_In1 DS3)). rewrite <- (assoc _ (to_In2 DS3)). rewrite <- (assoc _ (to_In2 DS3)). rewrite (to_IdIn1 DS3). rewrite (to_IdIn2 DS3). rewrite id_right. rewrite id_right. rewrite (to_Unel1' DS3). rewrite (to_Unel2' DS3). rewrite ZeroArrow_comp_right. rewrite ZeroArrow_comp_right. rewrite ZeroArrow_comp_left. rewrite ZeroArrow_comp_left. rewrite ZeroArrow_comp_left. rewrite ZeroArrow_comp_left. rewrite ZeroArrow_comp_left. rewrite ZeroArrow_comp_left. rewrite ZeroArrow_comp_left. rewrite to_lunax''. rewrite to_lunax''. rewrite to_runax''. rewrite <- (assoc _ (to_In2 DS2)). rewrite <- (assoc _ (to_In2 DS2)). rewrite (to_IdIn2 DS2). rewrite id_right. rewrite (to_Unel2' DS2). rewrite ZeroArrow_comp_right. rewrite ZeroArrow_comp_left. rewrite ZeroArrow_comp_left. rewrite to_lunax''. rewrite <- (assoc _ (to_In2 DS1)). rewrite (to_IdIn2 DS1). rewrite id_right. exact (to_BinOpId DS4). Qed.
imports: UniMath.Foundations.UnivalenceAxiom UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.Foundations.NaturalNumbers UniMath.MoreFoundations.PartA UniMath.Algebra.BinaryOperations UniMath.Algebra.Monoids UniMath.NumberSystems.Integers UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.TransportMorphisms UniMath.CategoryTheory.Limits.Zero UniMath.CategoryTheory.Limits.BinProducts UniMath.CategoryTheory.Limits.BinCoproducts UniMath.CategoryTheory.Limits.Equalizers UniMath.CategoryTheory.Limits.Coequalizers UniMath.CategoryTheory.Limits.Kernels UniMath.CategoryTheory.Limits.Cokernels UniMath.CategoryTheory.Limits.Pushouts UniMath.CategoryTheory.Limits.Pullbacks UniMath.CategoryTheory.Limits.BinDirectSums UniMath.CategoryTheory.Monics UniMath.CategoryTheory.Epis UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Adjunctions.Core UniMath.CategoryTheory.Equivalences.Core UniMath.CategoryTheory.CategoriesWithBinOps UniMath.CategoryTheory.PrecategoriesWithAbgrops UniMath.CategoryTheory.PreAdditive UniMath.CategoryTheory.Additive UniMath.CategoryTheory.Abelian UniMath.CategoryTheory.AbelianToAdditive UniMath.CategoryTheory.AdditiveFunctors UniMath.HomologicalAlgebra.Complexes UniMath.HomologicalAlgebra.KA UniMath.HomologicalAlgebra.TranslationFunctors