i * j = 3, 1 < i, 0 < i, j ≤ 1 ⊦ 3 ≤ i ∧ 1 < j, i = 3 ∧ j = 1
i * j = 3, 1 < i, 0 < i ⊦ j ≤ 1, 3 ≤ i ∧ 1 < j, i = 3 ∧ j = 1
Used formulas: j ≤ 1