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math.AG2013
Torus equivariant D-modules and hypergeometric systems
Christine Berkesch, Laura Felicia Matusevich, Uli Walther
We formalize, at the level of D-modules, the notion that A-hypergeometric systems are equivariant versions of the classical hypergeometric equations. For this purpose, we construct…
math.AG2013
Singularities and holonomicity of binomial D-modules
Christine Berkesch Zamaere, Laura Felicia Matusevich, Uli Walther
We study binomial D-modules, which generalize A-hypergeometric systems. We determine explicitly their singular loci and provide three characterizations of their holonomicity. The f…