⊦ i ≤ j → (j < i ↔ false)
j0 < j, i0 < j, abs(j0) < j, 1 < j, i0 < 0, 0 < j, j0 ≤ 0, i0 ≤ i0 * j + j0 ⊦ j ≤ 1
Used terms: j, 1