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15 June 2012 Exts and vertex operators
Erik Carlsson, Andrei Okounkov
Duke Math. J. 161(9): 1797-1815 (15 June 2012). DOI: 10.1215/00127094-1593380

Abstract

The direct product of two Hilbert schemes of the same surface has natural K-theory classes given by the alternating Ext-groups between the two ideal sheaves in question, twisted by a line bundle. We express the Chern classes of these virtual bundles in terms of Nakajima operators.

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Erik Carlsson. Andrei Okounkov. "Exts and vertex operators." Duke Math. J. 161 (9) 1797 - 1815, 15 June 2012. https://doi.org/10.1215/00127094-1593380

Information

Published: 15 June 2012
First available in Project Euclid: 6 June 2012

zbMATH: 1256.14010
MathSciNet: MR2942794
Digital Object Identifier: 10.1215/00127094-1593380

Subjects:
Primary: 14D21

Rights: Copyright © 2012 Duke University Press

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Vol.161 • No. 9 • 15 June 2012
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