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arXiv 1909.02679math.AG
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Donaldson-Thomas不变量、线性系和点Hilbert格式

Donaldson-Thomas invariants, linear systems and punctual Hilbert schemes

Amin Gholampour, Artan Sheshmani

摘要:

本文研究了由非奇异射影三重系统中的稳定相干层所产生的DT不变量,该系统由固定线丛的线性系的成员所支撑。当三重的典范丛满足一定的正性条件时,我们将DT不变量与非奇异曲面的点Hilbert格式的“扭曲欧拉数”的Carlsson-Okounkov公式联系起来,得出它们具有模性质.

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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