| ~(i / gcd(i, i0)) < 0 ∧ ~(i0 / gcd(i, i0)) < 0, 0 < i, i0 < 0 ⊦ i0 = 0, i = 0, abs(~(i / gcd(i, i0))) / gcd(~(i / gcd(i, i0)), ~(i0 / gcd(i, i0))) + i / gcd(i, i0) = 0 ∧ i0 / gcd(i, i0) + rational(~(i / gcd(i, i0)), ~(i0 / gcd(i, i0))).denom = 0 |
Used simplifier rules: ⊦ i0 < 0 → ¬ 0 < i0 / gcd(i, i0);% ⊦ ~ i < 0 ↔ 0 < i;