exact Classical.epsilon_spec this y v
k : ℕ
f : Vector ℕ k →. ℕ
hf : Nat.Partrec' f
y : ℕ
v : Fin k → ℕ
this : ∃ c, ∀ (y : ℕ) (v : Fin k → ℕ), (Semiformula.Evalbm ℕ (y :> v)) (code c) ↔ y ∈ f (Vector.ofFn v)
⊢ (Semiformula.Evalbm ℕ (y :> v)) (code (codeOfPartrec f)) ↔ y ∈ f (Vector.ofFn v)
no goals