| m1 + 1 < n, n0 < m0, m0 * n ≤ (m1 * m0 + m0) + n0, ¬ m1 < n -1 ∨ ¬ n0 < m0 ∨ ¬ m0 * n -1 ≤ m0 * m1 + n0 ⊦ |
m0 * m1 + n0 < m0 * (n - 1), m1 + 1 < n, n0 < m0, m0 * n ≤ (m1 * m0 + m0) + n0 ⊦ n - 1 = 0
Used simplifier rules: zero-01: ⊦ m0 * m = 0 ↔ m0 = 0 ∨ m = 0;%mult-a: ⊦ m0 * m * n = (m0 * m) * n;%mult-c: ⊦ m * n = n * m;%f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic%n0 ≤ n ⊦ m < n - n0 ↔ m + n0 < n; (s)% ⊦ m < n → n ≠ 0; (s)% ⊦ m < 1 ↔ m = 0; (s)% ⊦ m ≤ n ↔ ¬ n < m; (ss)% ⊦ n -1 = n - 1; (s)