| prime(i) ∧ 0 < j ∧ 0 ≤ j0 ∧ j0 < i, prime(i), j0 < i, 0 < j, 0 ≤ j0, 0 < i, ∀ j1, i, j0. i→n(j1) < i→n(j) → true → prime(i) ∧ 0 < j1 ∧ 0 ≤ j0 ∧ j0 < i → max_exp(i, fac(i * j1 + j0)) = j1 + max_exp(i, fac(j1)) ⊦ max_exp(i, fac(i * j)) = j + max_exp(i, fac(j)) |
0 < i, 0 ≤ j0, 0 < j, j0 < i, prime(i), ∀ j1, i, j0. i→n(j1) < i→n(j) → true → prime(i) ∧ 0 < j1 ∧ 0 ≤ j0 ∧ j0 < i → max_exp(i, fac(i * j1 + j0)) = j1 + max_exp(i, fac(j1)) ⊦ max_exp(i, fac(i * j)) = j + max_exp(i, fac(j))