decide
case succ.zero
ih : Nat.zero > 0 → toUint one = 1
h : Nat.succ Nat.zero > 0
⊢ toUint one = 1

case succ.succ
n✝ : ℕ
ih : Nat.succ n✝ > 0 → toUint one = 1
h : Nat.succ (Nat.succ n✝) > 0
⊢ toUint one = 1
case succ.succ
n✝ : ℕ
ih : Nat.succ n✝ > 0 → toUint one = 1
h : Nat.succ (Nat.succ n✝) > 0
⊢ toUint one = 1