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- W4225565760 abstract "We study punctual quot-schemes of torsion-free sheaves $E_Y$ on smooth projective curves, surfaces and Calabi--Yau fourfolds via their virtual geometry. Our goal is to give a complete description of the virtual fundamental classes and their tautological integrals. In the fourfold case, we first construct these classes under additional conditions. We use novel methods relying on the wall-crossing of Joyce. Our results include -the dependence of the cobordism classes on the torsion-free sheaf $E_Y$ where $Y$ is a surface, -relations to the previous results in the literature, which addressed the case of a trivial $E_Y$, -a new 12-fold correspondence relating Segre and Verlinde invariants for curves, surfaces and Calabi-Yau fourfolds based on the one observed by Arbesfeld-Johnson-Lim-Oprea-Pandharipande in dimensions one and two, -a closed formula for the Nekrasov genus, which gives a compact analogue of Nekrasov's conjecture. As our techniques are orthogonal to the original literature, we make our work independent by proving a new combinatorial identity in arXiv:2111.09868" @default.
- W4225565760 created "2022-05-05" @default.
- W4225565760 creator A5046257922 @default.
- W4225565760 date "2021-11-22" @default.
- W4225565760 modified "2023-09-24" @default.
- W4225565760 title "Wall-crossing for punctual Quot-schemes" @default.
- W4225565760 doi "https://doi.org/10.48550/arxiv.2111.11102" @default.
- W4225565760 hasPublicationYear "2021" @default.
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