Moduli of ℚ-Gorenstein pairs and applications

Moduli of ℚ-Gorenstein pairs and applications
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DOI:
10.1090/jag/823
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发表时间:
2021-08
影响因子:
1.8
通讯作者:
Stefano Filipazzi;Giovanni Inchiostro
Stefano Filipazzi;Giovanni Inchiostro
中科院分区:
数学1区
文献类型:
--
作者:
Stefano Filipazzi;Giovanni Inchiostro

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我们发展了一个框架来构造Q {\mathbb {Q}} -Gorenstein对的模空间。为此,我们修正了某些不变量;这些选择被编码在Q {\mathbb {Q}}稳定对的概念中。我们表明,这些选择给出了一个适当的模空间与投射粗模空间,他们防止一些病态的模空间的稳定对时,系数小于1 2 \frac {1}{2}。最后,我们应用这个机器提供了另一种证明的投射模空间的稳定对。
We develop a framework to construct moduli spaces of Q {\mathbb {Q}} -Gorenstein pairs. To do so, we fix certain invariants; these choices are encoded in the notion of Q {\mathbb {Q}} -stable pair. We show that these choices give a proper moduli space with projective coarse moduli space and they prevent some pathologies of the moduli space of stable pairs when the coefficients are smaller than 1 2 \frac {1}{2} . Lastly, we apply this machinery to provide an alternative proof of the projectivity of the moduli space of stable pairs.