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arXiv 1107.3433math.AGmath.GT
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Compact Riemann Surface上群作用数的一个下界

A Lower Bound for the Number of Group Actions on a Compact Riemann Surface

James W. Anderson, Aaron Wootton

摘要:

我们证明了在$σ$中,在固定亏格$σ\geq 2$的紧致Riemann曲面上不同群作用的个数至少是二次的.我们这样做,通过引入一个粗糙的签名空间,空间$\mathcal{K}_σ$的{ \em骨架签名}的群作用紧凑的黎曼曲面属$σ$。我们讨论了$\mathcal{K}_σ$的基本性质,并给出了完整的几何描述。

英文摘要:

We prove that the number of distinct group actions on compact Riemann surfaces of a fixed genus $σ\geq 2$ is at least quadratic in $σ$. We do this through the introduction of a coarse signature space, the space $\mathcal{K}_σ$ of {\em skeletal signatures} of group actions on compact Riemann surfaces of genus $σ$. We discuss the basic properties of $\mathcal{K}_σ$ and present a full conjectural description.

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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