proposition: Proposition ud_whisker_vcomp_square {x₁ x₂ y₁ y₂ z₁ z₂ : B} {h₁ : x₁ --> x₂} {h₂ h₂' : y₁ --> y₂} {h₃ : z₁ --> z₂} {v₁ : x₁ -|-> y₁} {v₂ : y₁ -|-> z₁} {w₁ : x₂ -|-> y₂} {w₂ : y₂ -|-> z₂} (τ : h₂ ==> h₂') (s₁ : square_double_bicat h₁ h₂ v₁ w₁) (s₂ : square_double_bicat h₂' h₃ v₂ w₂) : s₁ ⋆v (τ ▵s s₂) = (τ ▿s s₁) ⋆v s₂.
proof: Proof. exact (pr122 (pr222 (pr222 (pr12 B))) _ _ _ _ _ _ _ _ _ _ _ _ _ _ τ s₁ s₂). Defined.
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.Bicategories.Core.Bicat