exists n
ℕ : Type
inst✝³ : Core ℕ
inst✝² : Induction ℕ
inst✝¹ : Addition ℕ
inst✝ : Sign ℕ
n✝ n : ℕ
x✝ : Positive (step n)
⊢ ∃ m, step m ≃ step n
ℕ : Type
inst✝³ : Core ℕ
inst✝² : Induction ℕ
inst✝¹ : Addition ℕ
inst✝ : Sign ℕ
n✝ n : ℕ
x✝ : Positive (step n)
⊢ step n ≃ step n