proposition: Proposition dwhisker_square_comp {w x y z : B} {h₁ : w --> x} {h₂ h₂' h₂'' : y --> z} {v₁ : w -|-> y} {v₂ : x -|-> z} (τ₁ : h₂ ==> h₂') (τ₂ : h₂' ==> h₂'') (s : square_double_bicat h₁ h₂ v₁ v₂) : (τ₁ • τ₂) ▿s s = τ₂ ▿s (τ₁ ▿s s).
proof: Proof. exact (pr2 (pr1 (pr222 (pr12 B))) _ _ _ _ _ _ _ _ _ _ τ₁ τ₂ s). Defined.
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.Bicategories.Core.Bicat