unsolvedIndCases.lean:3:11-3:18: error: unsolved goals case zero ⊢ 0 + Nat.zero = Nat.zero unsolvedIndCases.lean:4:11-4:18: error: unsolved goals case succ y : Nat ⊢ 0 + Nat.succ y = Nat.succ y unsolvedIndCases.lean:8:14-8:21: error: unsolved goals case zero ⊢ 0 + Nat.zero = Nat.zero unsolvedIndCases.lean:9:14-9:21: error: unsolved goals case succ y : Nat ih : 0 + y = y ⊢ 0 + Nat.succ y = Nat.succ y unsolvedIndCases.lean:14:11-14:18: error: unsolved goals case succ y : Nat ⊢ 0 + Nat.succ y = Nat.succ y unsolvedIndCases.lean:18:18-18:25: error: unsolved goals case ind x y : Nat h₁ : 0 < y ∧ y ≤ x ih : y > 0 → (x - y) % y < y h : y > 0 ⊢ x % y < y unsolvedIndCases.lean:19:18-19:25: error: unsolved goals case base x y : Nat h₁ : ¬(0 < y ∧ y ≤ x) h : y > 0 ⊢ x % y < y unsolvedIndCases.lean:23:18-23:25: error: unsolved goals case ind x y : Nat h : y > 0 h₁ : 0 < y ∧ y ≤ x ih : x = x - y → y = y → x % y < y ⊢ x % y < y unsolvedIndCases.lean:24:18-24:25: error: unsolved goals case base x y : Nat h : y > 0 h₁ : ¬(0 < y ∧ y ≤ x) ⊢ x % y < y