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arXiv:2301.04569 [math.AG]AbstractReferencesReviewsResources

A sharp bound for hypergeometric rank in dimension three

Christine Berkesch, María-Cruz Fernández-Fernández

Published 2023-01-11Version 1

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.

Comments: 9 pages
Categories: math.AG, math.AC
Subjects: 13N10, 32C38, 33C70, 14M25
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