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