arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2010.09243math.AG
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二重覆盖与秩为2的向量丛

Double covers and vector bundles of rank two

Taketo Shirane

摘要:

在2017年,Catanese--Perroni给出了双覆盖的Picard群与秩为2的向量丛和底空间上的向量丛的某种态射的对的集合之间的自然对应。本文利用秩为2的向量丛的转移函数描述了由Picard群导出的后一个集合的群结构。本文的研究来源于对平面曲线的嵌入拓扑的研究。它还提出了研究Picard群的双重覆盖,并建设向量丛的秩二的方法。

英文摘要:

In 2017, Catanese--Perroni gave a natural correspondence between the Picard group of a double cover and a set of pairs of a vector bundle of rank two and a certain morphism of vector bundles on the base space. In this paper, we describe the group structure of the latter set induced from the Picard group in terms of transition functions of vector bundles of rank two. This study is derived from the study of the embedded topology of plane curves. It also proposes approaches to the study of Picard groups of double covers, and to the construction of vector bundles of rank two.

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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