Donaldson-Thomas invariants, linear systems and punctual Hilbert schemes

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We study certain DT invariants arising from stable coherent sheaves in a nonsingular projective threefold supported on the members of a linear system of a fixed line bundle. When the canonical bundle of the threefold satisfies certain positivity conditions, we relate the DT invariants to Carlsson-Okounkov formulas for the "twisted Euler's number" of the punctual Hilbert schemes of nonsingular surfaces, and conclude they have a modular property.
Original languageEnglish
JournalMathematical Research Letters
ISSN1073-2780
Publication statusAccepted/In press - 25 Dec 2020

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