| i = i1 * gcd(i, j), j = i2 * gcd(j, i), j0 = 0, 0 < gcd(i, j), 1 < i0, 0 < i0, 0 < i, 0 < j, j0 < gcd(i, j), abs(j0) < gcd(j, i), i0 | i2, i0 | i1, 0 ≤ j0, 0 ≤ i2, 0 ≤ j, 0 ≤ i1, 0 ≤ i ⊦ |
i = i1 * gcd(i, j), j = i2 * gcd(j, i), 0 < j, 0 < i, 0 < i0, 1 < i0, 0 < gcd(i, j), 0 < gcd(j, i), i0 | i1, i0 | i2, 0 ≤ i, 0 ≤ i1, 0 ≤ j, 0 ≤ i2 ⊦