On reduced stable pair invariants
Author(s)
Oberdieck, Georg B
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Let X = S × E be the product of a K3 surface S and an elliptic curve E. Reduced stable pair invariants of X can be defined via (1) cutting down the reduced virtual class with incidence conditions or (2) the Behrend function weighted Euler characteristic of the quotient of the moduli space by the translation action of E. We show that (2) arises naturally as the degree of a virtual class, and that the invariants (1) and (2) agree. This has applications to deformation invariance, rationality and a DT/PT correspondence for reduced invariants of S × E.
Date issued
2017-10Department
Massachusetts Institute of Technology. Department of MathematicsJournal
Mathematische Zeitschrift
Publisher
Springer-Verlag
Citation
Oberdieck, Georg. “On Reduced Stable Pair Invariants.” Mathematische Zeitschrift 289, no. 1–2 (October 20, 2017): 323–353. doi:10.1007/s00209-017-1953-5.
Version: Author's final manuscript
ISSN
0025-5874
1432-1823