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arXiv 2009.05415math.AG
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一维模空间中K3曲面的非辛自同构

Non-symplectic automorphisms of K3 surfaces with one-dimensional moduli space

Michela Artebani, Paola Comparin, María Elisa Valdés

摘要:

当$φ(n)=8$或$10$为纯非辛自同构$σ$时,K3曲面$X$的模空间是一维的。本文对这类模空间的最大维不可约分支的非常一般的成员$(X,σ)$进行了分类,并给出了明确的方程。特别是,我们表明,有一个独特的一维组件$n=20,22, 24$,三个不可约组件$n=15$和两个组件在其余的情况下。

英文摘要:

The moduli space of K3 surfaces $X$ with a purely non-symplectic automorphism $σ$ of order $n\geq 2$ is one dimensional exactly when $φ(n)=8$ or $10$. In this paper we classify and give explicit equations for the very general members $(X,σ)$ of the irreducible components of maximal dimension of such moduli spaces. In particular we show that there is a unique one-dimensional component for $n=20,22, 24$, three irreducible components for $n=15$ and two components in the remaining cases.

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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