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A Fourier analysis approach to disprove the weak Shanks conjecture
Preprint

A Fourier analysis approach to disprove the weak Shanks conjecture

Jeffrey S Geronimo and Hugo J Woerdeman
ArXiv.org
21 Aug 2025
url
https://doi.org/10.48550/arxiv.2508.15938View
Open

Abstract

Mathematics - Classical Analysis and ODEs Mathematics - Complex Variables Mathematics - Functional Analysis
We derive formulas for the Fourier coefficients of $|f|^2$, where $f(z_1,z_2)=(1-\frac{z_1+z_2}{r})^{-α}$, in terms of hypergeometric functions. Using these formulas we provide additional counterexamples to the weak Shanks conjecture, which was recently disproven by Bénéteau, Khavinson and Seco. The obtained formulas allow for (numerical) optimization over the parameters $α$ and $r$.

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