| prime(i) ∧ 0 < j ∧ 0 ≤ i0 ∧ j < i ^ i0, prime(i), j < i ^ i0, 0 < j, 0 < i ^ i0, 0 ≤ i0, 1 < i ^ i0 ⊦ Σ countFun(1, i0, λ j0. j / i ^ j0) = Σ countFun(1, i0 - 1, λ j0. j / i ^ j0) |
1 < i ^ i0, 0 ≤ i0, 0 < i ^ i0, 0 < j, j < i ^ i0, prime(i) ⊦ Σ countFun(1, i0, λ j0. j / i ^ j0) = Σ countFun(1, i0 - 1, λ j0. j / i ^ j0)