Vol. 253, No. 1, 2011

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A topological construction for all two-row Springer varieties

Heather M. Russell

Vol. 253 (2011), No. 1, 221–255
Abstract

Springer varieties appear in both geometric representation theory and knot theory. Motivated by knot theory and categorification, Khovanov provides a topological construction of (m,m) Springer varieties. Here we extend his construction to all two-row Springer varieties. Using the combinatorial and diagrammatic properties of this construction we provide a particularly useful homology basis and construct the Springer representation using this basis. We also provide a skein-theoretic formulation of the representation in this case.

Keywords
two-row Springer variety, Springer representation, noncrossing matchings, tangle homology
Mathematical Subject Classification 2000
Primary: 20C30, 55N45, 57M25, 57M60
Milestones
Received: 9 July 2010
Revised: 26 October 2010
Accepted: 27 November 2010
Published: 28 November 2011

Proposed: Darren Long
Authors
Heather M. Russell
Department of Mathematics
University of Southern California
3620 South Vermont Avenue, KAP 108
Los Angeles, CA 90089-2532
United States