Zeros of z''(s) & z'''(s) in s< 1/2

There is only one pair of non-real zeros of z''(s), and of z'''(s), in the left half-plane. The Riemann Hypothesis implies that z''(s) and z'''(s) have no zeros in the strip 0 \leq \Re\,s < {1\over 2} .

Zeros of z''(s) & z'''(s) in s< 1/2

There is only one pair of non-real zeros of z''(s), and of z'''(s), in the left half-plane. The Riemann Hypothesis implies that z''(s) and z'''(s) have no zeros in the strip 0 \leq \Re\,s < {1\over 2} .