| 0 ≤ j - min(j, j0) ∧ 0 ≤ min(j, j0), 0 ≤ j, 0 ≤ j0 ⊦ i * 10 ^ j + i0 * 10 ^ j0 = i * 10 ^ ((j - min(j, j0)) + min(j, j0)) + (i0 * 10 ^ (j0 - min(j, j0))) * 10 ^ min(j, j0) |
0 ≤ min(j, j0), min(j, j0) ≤ j, 0 ≤ j0, 0 ≤ j ⊦ i0 = 0, 10 ^ j0 = 10 ^ (j0 - min(j, j0)) * 10 ^ min(j, j0)
Used simplifier rules: eq-nonzero: ⊦ i ≠ 0 → (i * j = i * j0 ↔ j = j0); from specification int-mult%commutativity: ⊦ i * j = j * i; from specification int-mult%associativity: ⊦ i * j * j0 = (i * j) * j0; from specification int-mult%neq-not-zero: ⊦ i * j ≠ i * j0 → i ≠ 0; (forward) from specification int-mult%forward-le-01: ⊦ i ≤ j ∧ 0 ≤ i → 0 ≤ j; (forward) from specification int-abs%add-zero-rev: ⊦ 0 + i = i; from specification int-basic2%sub-le-01: ⊦ i ≤ j - i0 ↔ i + i0 ≤ j; from specification int-abs%add-in: ⊦ i + j = i + i0 ↔ j = i0; from specification int-basic2%add-c: ⊦ i + j = j + i; from specification int-basic2%add-a: ⊦ i + j + i0 = (i + j) + i0; from specification int-basic2%Sub-def: ⊦ i + (j - i) = j; from specification int-abs