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arXiv · 1408.7050

The affine Grassmannian and the Springer resolution in positive characteristic

Pramod N. Achar·Laura Rider
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Abstract

An important result of Arkhipov-Bezrukavnikov-Ginzburg relates constructible sheaves on the affine Grassmannian to coherent sheaves on the dual Springer resolution. In this paper, we prove a positive-characteristic analogue of this statement, using the framework of "mixed modular sheaves" recently developed by the first author and Riche. As an application, we deduce a relationship between parity sheaves on the affine Grassmannian and Bezrukavnikov's "exotic t-structure" on the Springer resolution.

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Pramod N. Achar, Laura Rider. 2014-08-29. The affine Grassmannian and the Springer resolution in positive characteristic. https://doi.org/10.1112/s0010437x16007661

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