arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math/9912176math.AG
收藏

Riemann Surfaces上亏格零作用

Genus Zero Actions on Riemann Surfaces

Sadok Kallel, Denis Sjerve

摘要:

本文确定了有限群G中作用在某个紧致Riemann曲面M上的所有有限群,并证明了:若H是G的任意非平凡子群,则其轨道曲面M/H是Riemann球面.我们的想法是看看诱导作用的向量空间上的全纯微分M(在正亏格的情况下),然后使用旧的已知(沃尔夫)分类的群体承认不动点自由线性行动。相应的群作用的描述中给出的Fuchsian表示。

英文摘要:

In this paper we determine all finite groups G that can act on some compact Riemann surface M with the property that if H is any non-trivial subgroup of G, then the orbit surface M/H is the Riemann sphere. The idea is to look at the induced action on the vector space of holomorphic differentials on M (in the positive genus case) and then use the old-known (Wolf) classification of groups admitting fixed point-free linear actions. A description of the corresponding group actions is given in terms of Fuchsian representations.

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。

↑