Uli Walther

most citedArbitrary rank jumps for

A

-hypergeometric systems through Laurent polynomials

3 citations · 3 across the 4 of their papers we have counts for

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math.AG2005

Duality and monodromy reducibility of $A$ -hypergeometric systems

Uli Walther

We study $A$ -hypergeometric systems $H_{A} (β)$ in the sense of Gelfand, Kapranov and Zelevinsky under two aspects: the structure of their holonomically dual system, and reducibility…

math.AG2004

Homological Methods for Hypergeometric Families

Laura Felicia Matusevich, Ezra Miller, Uli Walther

We analyze the behavior of the holonomic rank in families of holonomic systems over complex algebraic varieties by providing homological criteria for rank-jumps in this general set…

Duality and monodromy reducibility of A-hypergeometric systems

Homological Methods for Hypergeometric Families

Duality and monodromy reducibility of $A$ -hypergeometric systems