case and _ _ _ _ ihp ihq => intro hp hq; exact ⟨ihp hp, ihq hq⟩
L : Language
Δ✝¹ Δ₁ Δ₂ Γ✝ : Sequent L
p✝¹ q✝¹ r : SyntacticFormula L
C C' : Set (SyntacticFormula L)
Δ Γ : Sequent L
p q : SyntacticFormula L
ss : C ⊆ C'
Δ✝ : List (SyntacticFormula L)
p✝ q✝ : SyntacticFormula L
a✝¹ : Derivation (p✝ :: Δ✝)
a✝ : Derivation (q✝ :: Δ✝)
ihp : CutRestricted C a✝¹ → CutRestricted C' a✝¹
ihq : CutRestricted C a✝ → CutRestricted C' a✝
⊢ CutRestricted C a✝¹ → CutRestricted C a✝ → CutRestricted C' a✝¹ ∧ CutRestricted C' a✝
no goals