Definition strict_fiber_bicat_data_laws_lassociator_lassociator : ((f₁ ◃ lassociator f₂ f₃ f₄) • lassociator f₁ (f₂ · f₃) f₄) • (lassociator f₁ f₂ f₃ ▹ f₄) = lassociator f₁ f₂ (f₃ · f₄) • lassociator (f₁ · f₂) f₃ f₄.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.DisplayedCats.Core. Require Import UniMath.CategoryTheory.DisplayedCats.Constructions. Require Import UniMath.Bicategories.Core.Bicat. Import Bicat.Notations. Require Import UniMath.Bicategories.Core.Unitors. Require Import UniMath.Bicategories.DisplayedBicats.DispBicat. Import DispBicat.Notations. Require Import UniMath.Bicategories.DisplayedBicats.DispUnivalence. Require Import UniMath.Bicategories.Core.BicategoryLaws. Require Import UniMath.Bicategories.DisplayedBicats.CleavingOfBicat. Require Import UniMath.Bicategories.DisplayedBicats.FiberCategory. Require Import UniMath.Bicategories.DisplayedBicats.FiberBicategory.FiberBicategory1.