Download or read book Moduli Spaces of Sheaves on Surfaces in Geometric Representation Theory written by Anthony M. Licata and published by . This book was released on 2007 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: We define correspondences inside moduli spaces of framed torsion-free sheaves on P2 and show that they induce actions of Heisenberg and Clifford algebras on equivariant cohomology. These constructions give a geometric realization of level one representations of type A affine Lie algebras.