exact Rew.hom_ext' (by ext x <;> simp[Rew.comp_app])
L : Language
Δ Δ₁ Δ₂ Γ : Sequent L
p✝ q r : SyntacticFormula L
f : ℕ → SyntacticTerm L
p : SyntacticFormula L
⊢ (Rew.comp ⇑ (Rew.rewrite f)).hom p = ((Rew.rewrite (&0 :>ₙ fun x => ⇑ (f x))).comp ⇑).hom p
no goals