refine ⟨?subset, ?consistent, ?saturated⟩
case h
α : Type u_1
inst✝⁴ : DecidableEq α
inst✝³ : Inhabited α
𝓓 : DeductionParameter α
inst✝² : 𝓓.IncludeEFQ
inst✝¹ : Inhabited α
inst✝ : Encodable α
t : Tableau α
hCon : (𝓓)-Consistent t
⊢ t ⊆ t∞ ∧ (𝓓)-Consistent t∞ ∧ t∞.Saturated
case subset
α : Type u_1
inst✝⁴ : DecidableEq α
inst✝³ : Inhabited α
𝓓 : DeductionParameter α
inst✝² : 𝓓.IncludeEFQ
inst✝¹ : Inhabited α
inst✝ : Encodable α
t : Tableau α
hCon : (𝓓)-Consistent t
⊢ t ⊆ t∞

case consistent
α : Type u_1
inst✝⁴ : DecidableEq α
inst✝³ : Inhabited α
𝓓 : DeductionParameter α
inst✝² : 𝓓.IncludeEFQ
inst✝¹ : Inhabited α
inst✝ : Encodable α
t : Tableau α
hCon : (𝓓)-Consistent t
⊢ (𝓓)-Consistent t∞

case saturated
α : Type u_1
inst✝⁴ : DecidableEq α
inst✝³ : Inhabited α
𝓓 : DeductionParameter α
inst✝² : 𝓓.IncludeEFQ
inst✝¹ : Inhabited α
inst✝ : Encodable α
t : Tableau α
hCon : (𝓓)-Consistent t
⊢ t∞.Saturated