m < n ⊦ n = 0, m = 0, gcd(m, n) ≤ m ∧ gcd(m, n) ≤ n
⊦ m < n, n = 0, m = 0, gcd(m, n) ≤ m ∧ gcd(m, n) ≤ n
Used formulas: m < n