fact: Definition lassociator_h {C : double_cat} {w x y z : C} (f : w -->h x) (g : x -->h y) (h : y -->h z) : square (identity_v w) (identity_v z) (f ·h (g ·h h)) ((f ·h g) ·h h) := double_associator (double_cat_double_associator C) f g h.
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.CategoryTheory.TwoSidedDisplayedCats.Isos UniMath.CategoryTheory.TwoSidedDisplayedCats.Univalence UniMath.Bicategories.Core.Examples.BicatOfUnivCats UniMath.Bicategories.DoubleCategories.Basics.DoubleCategoryBasics