have : n ≥ step 0 := lt_step_le.mp this
ℕ : Type
inst✝³ : Core ℕ
inst✝² : Induction ℕ
inst✝¹ : Addition ℕ
inst✝ : Sign ℕ
order_inst : Order ℕ
n : ℕ
x✝ : Positive n
this : n > 0
⊢ n ≥ 1
ℕ : Type
inst✝³ : Core ℕ
inst✝² : Induction ℕ
inst✝¹ : Addition ℕ
inst✝ : Sign ℕ
order_inst : Order ℕ
n : ℕ
x✝ : Positive n
this✝ : n > 0
this : n ≥ step 0
⊢ n ≥ 1