Jensen polynomials for the Riemann zeta function and other sequences

Abstract

In 1927 Pólya proved that the Riemann Hypothesis is equivalent to the hyperbolicity of Jensen polynomials for the Riemann zeta function $\zeta (s)$ at its point of symmetry. This hyperbolicity has been proved for degrees $d\le 3$. We obtain an asymptotic formula for the central derivatives ${\zeta }^{(2n)}(1/2)$ that is accurate to all orders, which allows us to prove the hyperbolicity of a density $1$ subset of the Jensen polynomials of each degree. Moreover, we establish hyperbolicity for all $d\le 8$. These results follow from a general theorem which models such polynomials by Hermite polynomials. In the case of the Riemann zeta function, this proves the GUE random matrix model prediction in derivative aspect. The general theorem also allows us to prove a conjecture of Chen, Jia, and Wang on the partition function.

11 pages

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• Log-concavity of $P$-recursive sequences
• On The Complex Zeros of The Riemann Zeta Function
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• Hyperbolicity of the partition Jensen polynomials
• Trace minmax functions and the radical Laguerre-Pólya class
• Limits of Jensen polynomials for partitions and other sequences
• Stability of combinatorial polynomials and its applications
• The Jensen-Pólya program for various L-functions