Symmetries of order four on K3 surfaces

Symmetries of order four on K3 surfaces
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K3 表面上的四阶对称性

DOI:
10.2969/jmsj/06720503
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发表时间:
2011
影响因子:
0.7
通讯作者:
A. Sarti
A. Sarti
中科院分区:
数学4区
文献类型:
--
作者:
M. Artebani;A. Sarti

文献摘要

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本文研究了K3曲面上的四阶自同构。给出了自同构的平方是辛的,或其固定轨迹包含一条正属曲线,或其固定轨迹至少包含一条曲线且其平方所固定的曲线都是有理的非辛自同构的分类。在其他情况下,我们提供部分结果。
In this paper we study automorphisms of order four on K3 surfaces. We give a classification of the non-symplectic ones when either the square of the automorphism is symplectic, or its fixed locus contains a curve of positive genus, or its fixed locus contains at least a curve and all the curves fixed by its square are rational. We provide partial results in the other cases.