⊦ m * n + m0 * n ≤ m1 * n ↔ m + m0 ≤ m1 ∨ n = 0
m * n + m0 * n ≤ 1 * n ↔ m + m0 ≤ 1 ∨ n = 0 ⊦ m * n + m0 * n ≤ n ↔ m + m0 ≤ 1 ∨ n = 0
Used terms: m, n, m0, 1