proposition: Proposition lwhisker_hcomp_square {x₁ x₂ x₃ y₁ y₂ y₃ : B} {h₁ : x₁ --> x₂} {h₂ : x₂ --> x₃} {k₁ : y₁ --> y₂} {k₂ : y₂ --> y₃} {v₁ v₁' : x₁ -|-> y₁} {v₂ : x₂ -|-> y₂} {v₃ : x₃ -|-> y₃} (τ : v₁ =|=> v₁') (s₁ : square_double_bicat h₁ k₁ v₁' v₂) (s₂ : square_double_bicat h₂ k₂ v₂ v₃) : τ ◃s (s₁ ⋆h s₂) = (τ ◃s s₁) ⋆h s₂.
proof: Proof. exact (pr1 (pr222 (pr222 (pr222 (pr12 B)))) _ _ _ _ _ _ _ _ _ _ _ _ _ _ τ s₁ s₂). Defined.
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.Bicategories.Core.Bicat