proposition: Lemma BinCoproductOfArrowsIn2 {a b : C} (CCab : BinCoproductCocone a b) {c d : C} (CCcd : BinCoproductCocone c d) (f : a --> c) (g : b --> d) : BinCoproductIn2 CCab · BinCoproductOfArrows CCab CCcd f g = g · BinCoproductIn2 CCcd.
proof: Proof. unfold BinCoproductOfArrows. apply BinCoproductIn2Commutes. Qed.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.Tactics UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Limits.Graphs.Colimits UniMath.CategoryTheory.Limits.Graphs.EqDiag UniMath.CategoryTheory.Limits.BinCoproducts