Exts and Vertex Operators
Algebraic Geometry
2019-12-19 v3 Representation Theory
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.
Keywords
Cite
@article{arxiv.0801.2565,
title = {Exts and Vertex Operators},
author = {Erik Carlsson and Andrei Okounkov},
journal= {arXiv preprint arXiv:0801.2565},
year = {2019}
}
Comments
21 pages, 0 figures