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On categories ${\mathcal{O}}$ for quantized symplectic resolutions

Part of: Representation theory of rings and algebras Homological methods

Published online by Cambridge University Press:  07 September 2017

Ivan Losev
Ivan Losev*
Affiliation:
Department of Mathematics, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA email i.loseu@neu.edu
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Abstract

In this paper we study categories ${\mathcal{O}}$ over quantizations of symplectic resolutions admitting Hamiltonian tori actions with finitely many fixed points. In this generality, these categories were introduced by Braden et al. We establish a family of standardly stratified structures (in the sense of the author and Webster) on these categories ${\mathcal{O}}$ . We use these structures to study shuffling functors of Braden et al. (called cross-walling functors in this paper). Most importantly, we prove that all cross-walling functors are derived equivalences that define an action of the Deligne groupoid of a suitable real hyperplane arrangement.

Keywords

category 𝓞symplectic resolutionquantizationhighest-weight structurederived equivalence

MSC classification

Primary: 16E35: Derived categories 16G99: None of the above, but in this section
Type
Research Article
Information
Compositio Mathematica , Volume 153 , Issue 12 , December 2017 , pp. 2445 - 2481
Copyright
© The Author 2017 

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