abs(j) = 1, 0 < i ⊦ j = 1, j = 0, i = 0, i % j < i ↔ abs(j) = 1 ∨ abs(j) ≤ i
0 < i ⊦ abs(j) = 1, j = 1, j = 0, i = 0, i % j < i ↔ abs(j) = 1 ∨ abs(j) ≤ i
Used formulas: abs(j) = 1