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arXiv 2107.07583math.NTmath.AGmath.DS
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格的等距与K3曲面的自同构

Isometries of lattices and automorphisms of K3 surfaces

Eva Bayer-Fluckiger

摘要:

本文给出了整数多项式是具有给定签名的偶幺模格的半单等距的特征多项式的充要条件。这一结果对K3曲面的自同构有一定的应用,特别地,我们证明了每一个度为4,6,8,12,14或16的Salem数都是非投射K3曲面的自同构的动力学度.

英文摘要:

The aim of this paper is to give necessary and sufficient conditions for an integral polynomial to be the characteristic polynomial of a semi-simple isometry of some even unimodular lattice of given signature. This result has applications applications to automorphisms of K3 surfaces; in particular, we show that every Salem number of degree 4, 6, 8,1 2, 14 or 16 is the dynamical degree of an automorphism of a non-projective K3 surface.

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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