| n0 < m0, m0 * n ≤ m0 * m + n0 ⊦ n ≤ m |
m < n, m0 * n ≤ m0 * m + n0, n0 < m0 ⊦
Used simplifier rules: f: ⊦ m < n → n ≠ 0; from specification nat-basic1%f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic1%lels-01: ⊦ ¬ m ≤ n ↔ n < m; from specification nat