ext p
L : Language
L₁ : Language
L₂ : Language
L₃ : Language
ξ : Type u_1
ξ₁ : Type u_2
ξ₂ : Type u_3
ξ₃ : Type u_4
n n₁ n₂✝ n₂ m m₁ m₂ m₃ n₃ : ℕ
ω₂ : Rew L ξ₂ n₂ ξ₃ n₃
ω₁ : Rew L ξ₁ n₁ ξ₂ n₂
⊢ (ω₂.comp ω₁).hom = ω₂.hom.comp ω₁.hom
case h
L : Language
L₁ : Language
L₂ : Language
L₃ : Language
ξ : Type u_1
ξ₁ : Type u_2
ξ₂ : Type u_3
ξ₃ : Type u_4
n n₁ n₂✝ n₂ m m₁ m₂ m₃ n₃ : ℕ
ω₂ : Rew L ξ₂ n₂ ξ₃ n₃
ω₁ : Rew L ξ₁ n₁ ξ₂ n₂
p : Semiformula L ξ₁ n₁
⊢ (ω₂.comp ω₁).hom p = (ω₂.hom.comp ω₁.hom) p