fact: Definition rassociator {C : prebicat_data} {a b c d : C} (f : C⟦a, b⟧) (g : C⟦b, c⟧) (h : C⟦c, d⟧) : (f · g) · h ==> f · (g · h) := pr1 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 C)))))) a b c d f g h.
imports: UniMath.Tactics.EnsureStructuredProofs UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.PrecategoryBinProduct