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Gopakumar-Vafa invariant and Macdonald formula
Zhao, Lutian
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https://hdl.handle.net/2142/113016
Description
- Title
- Gopakumar-Vafa invariant and Macdonald formula
- Author(s)
- Zhao, Lutian
- Issue Date
- 2021-07-14
- Director of Research (if dissertation) or Advisor (if thesis)
- Katz, Sheldon
- Doctoral Committee Chair(s)
- Bradlow, Steven
- Committee Member(s)
- Dodd, Christopher
- Haboush, William
- Department of Study
- Mathematics
- Discipline
- Mathematics
- Degree Granting Institution
- University of Illinois at Urbana-Champaign
- Degree Name
- Ph.D.
- Degree Level
- Dissertation
- Date of Ingest
- 2022-01-12T21:45:36Z
- Keyword(s)
- Moduli spaces, Gopakumar-Vafa invariants, Macdonald Formula, Hilbert Scheme, Decomposition Theorem
- Abstract
- In this thesis, I will introduce the Gopakumar-Vafa(GV) invariant and show one calculation on the nonreduced cycle. The GV invariant is an integral invariant predicted by physicist that counts the number of curves inside a given Calabi-Yau threefold. The definition has been conjectured by Maulik-Toda in 2016 in terms of perverse sheaf. I will use this definition on the total space of canonical bundle of P2 and compute the associated invariants. I will introduce a Gopakumar-Vafa/Pandharipande-Thomas correspondence on the level of perverse sheaves, inspired by the work of Migliorini-Shende-Viviani. I will verify that my calculation actually proves part of the conjecture. I have shown a strong evidence for this conjecture in the case of degree 2.
- Graduation Semester
- 2021-08
- Type of Resource
- Thesis
- Permalink
- http://hdl.handle.net/2142/113016
- Copyright and License Information
- Copyright 2021, Lutian Zhao
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