exact ⟨u, this⟩
case intro
L : Language
inst✝³ : (k : ℕ) → DecidableEq (L.Func k)
inst✝² : (k : ℕ) → DecidableEq (L.Rel k)
inst✝¹ : (k : ℕ) → Encodable (L.Func k)
inst✝ : (k : ℕ) → Encodable (L.Rel k)
T : Theory L
Γ : Sequent L
nwf : ¬WellFounded (SearchTree.Lt T Γ)
p : SyntacticSemiformula L (0 + 1)
h : ∀' p ∈ ⛓️
u : Semiterm L ℕ 0
hu : [→ u].hom p ∈ ⛓️
this : ¬(Eval (Model.structure T Γ) ![u] Semiterm.fvar) p
⊢ ∃ x, ¬(Eval (Model.structure T Γ) ![x] Semiterm.fvar) p
no goals