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arXiv · 1603.02911

Local Extrema of the $Ξ(t)$ Function and The Riemann Hypothesis

Hisashi Kobayashi
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Abstract

In the present paper we obtain a necessary and sufficient condition to prove the Riemann hypothesis in terms of certain properties of local extrema of the function $Ξ(t)=ξ(\tfrac{1}{2}+it)$. First, we prove that positivity of all local maxima and negativity of all local minima of $Ξ(t)$ form a necessary condition for the Riemann hypothesis to be true. After showing that any extremum point of $Ξ(t)$ is a saddle point of the function $\Re\{ξ(s)\}$, we prove that the above properties of local extrema of $Ξ(t)$ are also a sufficient condition for the Riemann hypothesis to hold at $t\gg 1$. We present a numerical example to illustrate our approach towards a possible proof of the Riemann hypothesis. Thus, the task of proving the Riemann hypothesis is reduced to the one of showing the above properties of local extrema of $Ξ(t)$.

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Hisashi Kobayashi. 2016-03-05. Local Extrema of the $Ξ(t)$ Function and The Riemann Hypothesis. https://arxiv.org/abs/1603.02911

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