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arXiv 1504.00728math.AG
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作用在Enriques曲面上的有限自同构的双正则表示

Bi-canonical representations of finite automorphisms acting on Enriques surfaces

Hisanori Ohashi

摘要:

我们对Enriques曲面上有限自同构的双正则表示进行了分类。有三种类型的非平凡的情况下,例子显式给出了堀川模型。特别地,有限的非半辛自同构只存在于4阶和8阶。一个推论是在恩里克斯曲面的自同构群中的任何有限循环子群都有阶1,2,3,4,5,6,8。此外,对于其中的两类,给出了极大维族的唯一性定理。

英文摘要:

We classify the bi-canonical representations of finite automorphisms on Enriques surfaces. There are three types of non-trivial cases and examples are given explicitly by Horikawa models. In particular, finite non-semi-symplectic automorphisms exist only in orders 4 and 8. One corollary is that any finite cyclic subgroup in the automorphism group of an Enriques surface has order 1, 2, 3, 4, 5, 6, 8. Moreover, for two of the three types, a uniqueness theorem for maximal-dimensional families is given.

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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