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arXiv 2408.07593math.AG
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曲面上点的Hilbert概型的稳定双有理性研究

On the Stable Birationality of Hilbert schemes of points on surfaces

Morena Porzio

AI总结:

本文研究不规则性为零的曲面上Hilbert概型之间的稳定双有理等价关系,证明几何有理曲面上仅有有限多个稳定双有理类,并由此推出motivic zeta函数的有理性。

摘要:

本文旨在研究曲面X上n次点的Hilbert概型$Hilb^n_X$的稳定双有理类型。更确切地说,本文讨论当X为不规则性q(X)=0的曲面时,对于哪些正整数对$(n,n')$,簇$Hilb^n_X$与$Hilb^{n'}_X$稳定双有理等价。在给出此类曲面的一般性结果之后,我们将注意力限制在几何有理曲面上,证明在诸$Hilb^n_X$之间仅存在有限多个稳定双有理类。作为推论,我们在特征零域上推导出motivic zeta函数$ζ(X,t)$在$K_0(Var/k)/([\mathbb{A}^1_k])[[t]]$中的有理性。

英文摘要:

The aim of this paper is to study the stable birational type of $Hilb^n_X$, the Hilbert scheme of degree $n$ points on a surface $X$. More precisely, it addresses the question for which pairs of positive integers $(n,n')$ the variety $Hilb^n_X$ is stably birational to $Hilb^{n'}_X$, when $X$ is a surface with irregularity $q(X)=0$. After general results for such surfaces, we restrict our attention to geometrically rational surfaces, proving that there are only finitely many stable birational classes among the $Hilb^n_X$'s. As a corollary, we deduce the rationality of the motivic zeta function $ζ(X,t)$ in $K_0(Var/k)/([\mathbb{A}^1_k])[[t]]$ over fields of characteristic zero.

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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