| ≡mod(i, 1, j), j0 | abs(i - 1), prime(j), prime(j0), 0 < i ⊦ j = j0, j * j0 | i - 1 |
prime(j), prime(j0), 0 < i, ≡mod(i, 1, j), j0 | i - 1 ⊦ j = j0, j * j0 | i - 1
Used simplifier rules: abs-16: ⊦ 0 < j → abs(j) = j; from specification int-abs%abs-09: ⊦ 0 < i → abs(i - 1) = abs(i) - 1; from specification int-abs