| i0 / j < j0, 0 < j, i0 / j < i / j, i ≤ i0, j0 ≤ i / j ⊦ |
⊦ 0 < j ∧ 0 ≤ i → (i0 = i / j ∧ j0 = i % j ↔ i = i0 * j + j0 ∧ 0 ≤ j0 ∧ j0 < j ∧ 0 ≤ i0)
i0 / j < i / j, 0 < j, i0 / j < j0, j0 ≤ i / j, i ≤ i0 ⊦ 0 < j ∧ 0 ≤ i
i = i1 * j + j1, i0 / j < i1, 0 < j, i0 / j < j0, j1 < j, j0 ≤ i1, i ≤ i0, 0 ≤ j1, 0 ≤ i1, 0 ≤ i ⊦
Used terms: i, j, i1, j1