Definition dwhisker_square {B : ver_bicat_sq_id_comp_whisker} {w x y z : B} {h₁ : w --> x} {h₂ h₂' : y --> z} {v₁ : w -|-> y} {v₂ : x -|-> z} (τ : h₂ ==> h₂') (s : square_double_bicat h₁ h₂ v₁ v₂) : square_double_bicat h₁ h₂' v₁ v₂ := pr222 (pr2 B) w x y z h₁ h₂ h₂' v₁ v₂ τ s.
Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Prelude. Require Import UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat. Require Import UniMath.Bicategories.Core.Bicat. Import Bicat.Notations.