| n2 < n0 ∧ m0 < m ∧ n1 < n0 → m0 * n0 + n1 < m * n0 + n2, m0 < m, n2 < n0, n1 < n0, m * n0 + n2 < m0 * n0 + n1 ⊦ m * n0 + n2 = m0 * n0 + n1, m = 0, n0 = 0, m0 * n0 + n1 = 0 |
m0 * n0 + n1 < m * n0 + n2, m0 < m, n2 < n0, n1 < n0, m * n0 + n2 < m0 * n0 + n1 ⊦ m * n0 + n2 = m0 * n0 + n1, m = 0, n0 = 0, m0 * n0 + n1 = 0