| gcd(j, j0) = 1, j * j = i * j0 * j0, 0 < i, 0 < j, 0 < j0, ∀ i0, j, j0. i→n(i0) < i→n(i) → 0 < i0 ∧ 0 < j ∧ 0 < j0 ∧ gcd(j, j0) = 1 ∧ j * j = i0 * j0 * j0 → (∃ i1. i0 = i1 * i1) ⊦ ∃ i0. i = i0 * i0 |
⊦ prime(i) ∧ gcd(j, j0) = 1 ∧ 0 < j ∧ 0 ≤ j0 → j * j ≠ i * j0 * j0
¬(prime(i) ∧ gcd(j, j0) = 1 ∧ 0 < j ∧ 0 ≤ j0), gcd(j, j0) = 1, j * j = i * j0 * j0, 0 < i, 0 < j, 0 < j0, ∀ i0, j, j0. i→n(i0) < i→n(i) → 0 < i0 ∧ 0 < j ∧ 0 < j0 ∧ gcd(j, j0) = 1 ∧ j * j = i0 * j0 * j0 → (∃ i1. i0 = i1 * i1) ⊦ ∃ i0. i = i0 * i0
Used terms: j0, i, j