Irregularity of hypergeometric systems via slopes along coordinate subspaces

Mathias Schulze, Uli Walther

We study the irregularity sheaves attached to the $A$-hypergeometric $D$-module $M_A(\beta )$ introduced by Gel'fand et al., where $A\in {\mathbb{Z}}^{d\times n}$ is pointed of full rank a…