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arXiv · 2301.04569

A sharp bound for hypergeometric rank in dimension three

Christine Berkesch·María-Cruz Fernández-Fernández
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Abstract

We provide a sharp upper bound on the quotient of the rank of an A-hypergeometric system with a three-dimensional torus action by the normalized volume of A; in this case, the upper bound is two.

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Christine Berkesch, María-Cruz Fernández-Fernández. 2023-01-11. A sharp bound for hypergeometric rank in dimension three. https://arxiv.org/abs/2301.04569

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