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Showing 2007 · math.AGShow all
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math.AG2007★ 50 cited
Hypergeometric D-modules and twisted Gauss-Manin systems
Mathias Schulze, Uli Walther
The Euler-Koszul complex is the fundamental tool in the homological study of A-hypergeometric differential systems and functions. We compare Euler-Koszul homology with D-module dir…
math.AG2007★ 9 cited
The Drinfel'd Double and Twisting in Stringy Orbifold Theory
Ralph M. Kaufmann, David Pham
This paper exposes the fundamental role that the Drinfel'd double $\dkg$ of the group ring of a finite group and its twists $\dbkg$, $β\in Z^3(G,\uk)$ as defined by Dijkgraaf--…