| 0 < (j0 * i1 + (i0 * i1) * j) / j, 0 < i0 * j + j0, 0 < j, 0 < j1, i1 < j, j0 < j, 0 ≤ (j0 * i1 + (i0 * i1) * j) / j, 0 ≤ i0 * j + j0, i0 * j + j0 ≤ (j0 * i1 + (i0 * i1) * j) / j, 0 ≤ i0, 0 ≤ j0 ⊦ |
⊦ i0 % j = 0 ∧ 0 ≤ i ∧ 0 ≤ i0 ∧ 0 < j → (i + i0) / j = i / j + i0 / j
j0 < j, i1 < j, 0 < j1, 0 < j, 0 < i0 * j + j0, 0 < (j0 * i1 + (i0 * i1) * j) / j, 0 ≤ j0, 0 ≤ i0, i0 * j + j0 ≤ (j0 * i1 + (i0 * i1) * j) / j, 0 ≤ i0 * j + j0, 0 ≤ (j0 * i1 + (i0 * i1) * j) / j ⊦ ((i0 * i1) * j) % j = 0 ∧ 0 ≤ j0 * i1 ∧ 0 ≤ (i0 * i1) * j ∧ 0 < j
((i0 * i1) * j) % j = 0, j0 < j, i1 < j, 0 < j1, 0 < i0 * j + j0, 0 < (j0 * i1) / j + ((i0 * i1) * j) / j, 0 < j, 0 ≤ j0, 0 ≤ i0, i0 * j + j0 ≤ (j0 * i1) / j + ((i0 * i1) * j) / j, 0 ≤ i0 * j + j0, 0 ≤ (j0 * i1) / j + ((i0 * i1) * j) / j, 0 ≤ j0 * i1, 0 ≤ (i0 * i1) * j ⊦
Used terms: j, (i0 * i1) * j, j0 * i1