arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2302.09014math.AG
收藏

四次曲面的自同构与Cremona变换

Automorphisms of quartic surfaces and Cremona transformations

Daniela Paiva, Ana Quedo

AI总结:

本文研究光滑四次曲面自同构是否由Cremona变换诱导,在ρ(S)=2时给出初步步骤,构造反例否定Oguiso问题。

摘要:

本文考虑光滑四次曲面$S \subset \mathbb{P}^3$的自同构中哪些是由$\mathbb{P}^3$的Cremona变换诱导的问题。当$ρ(S)=2$时,我们提供了朝该问题完全解决迈出的初步步骤。特别地,我们给出了几个四次曲面的例子,其自同构群由对合生成,但没有任何非平凡自同构是由$\mathbb{P}^3$的Cremona变换诱导的,从而对Oguiso关于光滑四次曲面$S\subset \mathbb{P}^3$的每个有限阶自同构是否都由Cremona变换诱导的问题给出了否定回答。

英文摘要:

In this paper, we consider the problem of determining which automorphisms of a smooth quartic surface $S \subset \mathbb{P}^3$ are induced by a Cremona transformation of $\mathbb{P}^3$. We provide the first steps towards a complete solution of this problem when $ρ(S)=2$. In particular, we give several examples of quartics whose automorphism groups are generated by involutions, but no non-trivial automorphism is induced by a Cremona transformation of $\mathbb{P}^3$, giving a negative answer for Oguiso's question of whether every automorphism of finite order of a smooth quartic surface $S\subset \mathbb{P}^3$ is induced by a Cremona transformation.

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。

↑