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Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2024 MCQ for Transactions of the American Mathematical Society is 1.48 .

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BPS invariants of symplectic log Calabi-Yau fourfolds
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by Mohammad Farajzadeh-Tehrani;
Trans. Amer. Math. Soc. 377 (2024), 3449-3486
DOI: https://doi.org/10.1090/tran/9114
Published electronically: February 14, 2024

Abstract:

Using the Fredholm setup of Farajzadeh-Tehrani [Peking Math. J. (2023), https://doi.org/10.1007/s42543-023-00069-1], we study genus zero (and higher) relative Gromov-Witten invariants with maximum tangency of symplectic log Calabi-Yau fourfolds. In particular, we give a short proof of Gross [Duke Math. J. 153 (2010), pp. 297–362, Cnj. 6.2] that expresses these invariants in terms of certain integral invariants by considering generic almost complex structures to obtain a geometric count. We also revisit the localization calculation of the multiple-cover contributions in Gross [Prp. 6.1] and recalculate a few terms differently to provide more details and illustrate the computation of deformation/obstruction spaces for maps that have components in a destabilizing (or rubber) component of the target. Finally, we study a higher genus version of these invariants and explain a decomposition of genus one invariants into different contributions.
References
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Bibliographic Information
  • Mohammad Farajzadeh-Tehrani
  • Affiliation: The University of Iowa, MacLean Hall, Iowa City, Iowa 52242
  • MR Author ID: 999611
  • ORCID: 0000-0002-2526-7153
  • Email: mohammad-tehrani@uiowa.edu
  • Received by editor(s): July 1, 2022
  • Received by editor(s) in revised form: December 7, 2023
  • Published electronically: February 14, 2024
  • Additional Notes: The author was partially supported by the NSF grant DMS-2003340.
  • © Copyright 2024 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 377 (2024), 3449-3486
  • MSC (2020): Primary 14N35, 53D45
  • DOI: https://doi.org/10.1090/tran/9114
  • MathSciNet review: 4744785