⊦ j2 / gcd(i2, j2) = 1 → gcd(i2, j2) = j2
abs(i) / gcd(j, abs(i)) = 1 → gcd(j, abs(i)) = abs(i) ⊦ abs(i) / gcd(i, j) = 1 ↔ gcd(i, j) = abs(i), j = 0
Used terms: abs(i), j