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Jul 23, 2023 at 12:41 history edited Agno CC BY-SA 4.0
Further simplified equation (1)
Jul 22, 2023 at 0:05 history edited Michael Hardy CC BY-SA 4.0
added 111 characters in body
Jul 20, 2023 at 17:22 comment added Stopple There is work by Farr-Pauli-Saidak on zeros of fractional derivatives of $\zeta(s)$, see for example link.springer.com/chapter/10.1007/978-3-030-52200-1_9
Jul 20, 2023 at 17:01 comment added Stopple @Conrad Speiser's 1934 proof is topological, not analytic, and assumes implicitly that the level curves real (resp.) imaginary part of $\zeta(s)=0$ never pass through a zero of $\zeta^\prime(s)$, so the curves don't cross or branch. Spira showed unconditionally that RH=> the zeros of $\zeta^\prime$ lie to the right of the critical line, and Montgomery-Levin proved the other implication, also unconditionally.
Jul 20, 2023 at 15:56 comment added Conrad I agree that looking at the paper cited above it seems so, but what is a bit weird is that Broughan's book Equivalents of RH Volume I cites same paper but notes that it doesn't quite imply the equivalence; I guess that you are right and indeed there is an equivalence and Broughan is just mistaken
Jul 20, 2023 at 15:49 comment added Agno @Conrad If I interpret the answer to this MO-question correctly mathoverflow.net/questions/107938/…, the converse should be true as well.
Jul 20, 2023 at 15:41 comment added Conrad I am not sure that RH is equivalent to the fact that the non-trivial zeros of ζ′(s) are on the right of the critical line, as I think it is only an implication (RH implies that but not the converse)
Jul 20, 2023 at 15:35 history asked Agno CC BY-SA 4.0