exact (ih₁ ⟨h₁⟩) ⨀ (ih₂ ⟨h₂⟩)
case mdp
α : Type u
inst✝ : DecidableEq α
𝓓 : DeductionParameter α
p p✝ q✝ : Formula α
h₁ : Deduction 𝐈𝐧𝐭 (p✝ ⟶ q✝)
h₂ : Deduction 𝐈𝐧𝐭 p✝
ih₁ : p✝ ⟶ q✝ ∈ theory 𝐈𝐧𝐭 → 𝐂𝐥 ⊢! p✝ ⟶ q✝
ih₂ : p✝ ∈ theory 𝐈𝐧𝐭 → 𝐂𝐥 ⊢! p✝
hp : q✝ ∈ theory 𝐈𝐧𝐭
⊢ 𝐂𝐥 ⊢! q✝
no goals