fact: Definition rassociator_invertible_2cell {B : bicat} {a b c d : B} (f : a --> b) (g : b --> c) (h : c --> d) : invertible_2cell (f · g · h) (f · (g · h)).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.Bicategories.Core.Bicat