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arXiv · 2309.08869

Proof of the Kresch-Tamvakis Conjecture

John S. Caughman·Taiyo S. Terada
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Abstract

In this paper we resolve a conjecture of Kresch and Tamvakis. Our result is the following. Theorem: For any positive integer $D$ and any integers $i,j$ $(0\leq i,j \leq D)$, the absolute value of the following hypergeometric series is at most 1: \begin{equation*} {_4F_3} \left[ \begin{array}{c} -i, \; i+1, \; -j, \; j+1 \\ 1, \; D+2, \; -D \end{array} ; 1 \right]. \end{equation*} To prove this theorem, we use the Biedenharn-Elliott identity, the theory of Leonard pairs, and the Perron-Frobenius theorem.

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John S. Caughman, Taiyo S. Terada. 2023-09-16. Proof of the Kresch-Tamvakis Conjecture. https://arxiv.org/abs/2309.08869

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