intro m
ℕ : Type
inst✝³ : Core ℕ
inst✝² : Induction ℕ
inst✝¹ : Addition ℕ
inst✝ : Sign ℕ
n m : ℕ
x✝ : Positive n
⊢ ∀ (m : ℕ), Positive (n + step m)
ℕ : Type
inst✝³ : Core ℕ
inst✝² : Induction ℕ
inst✝¹ : Addition ℕ
inst✝ : Sign ℕ
n m✝ : ℕ
x✝ : Positive n
m : ℕ
⊢ Positive (n + step m)