arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1802.08485math.AGmath.GR
收藏

Cremona群的椭圆元子群

Subgroups of elliptic elements of the Cremona group

Christian Urech

摘要:

Cremona群是复射影平面的双有理变换群。本文利用初等模型论对它的仅由椭圆元组成的子群进行了分类。这产生特别是一个描述的结构扭转小组。作为应用,我们证明了Cremona群的任意子群的Tits择一性,推广了Cantat的一个结果.我们还描述了可解子群的克雷莫纳群和他们的衍生长度,精炼结果从Déserti。

英文摘要:

The Cremona group is the group of birational transformations of the complex projective plane. In this paper we classify its subgroups that consist only of elliptic elements using elementary model theory. This yields in particular a description of the structure of torsion subgroups. As an appliction, we prove the Tits alternative for arbitrary subgroups of the Cremona group, generalizing a result of Cantat. We also describe solvable subgroups of the Cremona group and their derived length, refining results from Déserti.

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。

↑