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arXiv 0901.0369math.AG
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关于K3-surfaces的Cox环

On Cox rings of K3-surfaces

Michela Artebani, Juergen Hausen, Antonio Laface

摘要:

研究了K3-曲面的Cox环。第一个结果是,一个K3-曲面有一个生成的Cox环当且仅当它的有效锥是多面体。此外,我们还研究了Picard数为2的K3-曲面的Cox环的生成元的度和关系,并明确计算了Picard数为2 ~ 5或作为del Pezzo曲面的双覆盖出现的具有非辛对合的一般K3-曲面的Cox环.

英文摘要:

We study Cox rings of K3-surfaces. A first result is that a K3-surface has a finitely generated Cox ring if and only if its effective cone is polyhedral. Moreover, we investigate degrees of generators and relations for Cox rings of K3-surfaces of Picard number two, and explicitly compute the Cox rings of generic K3-surfaces with a non-symplectic involution that have Picard number 2 to 5 or occur as double covers of del Pezzo surfaces.

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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