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