Perverse coherent sheaves on blowup, III: Blow-up formula from wall-crossing
Nakajima, Hiraku ; Yoshioka, Kōta
Kyoto J. Math., Tome 51 (2011) no. 1, p. 263-335 / Harvested from Project Euclid
In earlier papers of this series we constructed a sequence of intermediate moduli spaces $\{{\widehat{M}}^{m}(c)\}_{m=0,1,2,\ldots}$ connecting a moduli space $M(c)$ of stable torsion-free sheaves on a nonsingular complex projective surface $X$ and ${\widehat{M}}(c)$ on its one-point blow-up $\widehat {X}$ . They are moduli spaces of perverse coherent sheaves on $\widehat{X}$ . In this paper we study how Donaldson-type invariants (integrals of cohomology classes given by universal sheaves) change from ${\widehat{M}}^{m}(c)$ to ${\widehat{M}}^{m+1}(c)$ and then from $M(c)$ to ${\widehat{M}}(c)$ . As an application we prove that Nekrasov-type partition functions satisfy certain equations that determine invariants recursively in second Chern classes. They are generalizations of the blow-up equation for the original Nekrasov deformed partition function for the pure $N=2$ supersymmetric gauge theory, found and used to derive the Seiberg-Witten curves.
Publié le : 2011-05-15
Classification:  14D21,  16G20
@article{1303494505,
     author = {Nakajima, Hiraku and Yoshioka, K\=ota},
     title = {Perverse coherent sheaves on blowup, III: Blow-up formula from wall-crossing},
     journal = {Kyoto J. Math.},
     volume = {51},
     number = {1},
     year = {2011},
     pages = { 263-335},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1303494505}
}
Nakajima, Hiraku; Yoshioka, Kōta. Perverse coherent sheaves on blowup, III: Blow-up formula from wall-crossing. Kyoto J. Math., Tome 51 (2011) no. 1, pp.  263-335. http://gdmltest.u-ga.fr/item/1303494505/