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arXiv 1202.3560math-phmath.AGmath.CVmath.MP
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实Riemann曲面和基本域的周期矩阵

Period Matrices of Real Riemann Surfaces and Fundamental Domains

Pietro Giavedoni

摘要:

对于正整数$g$和$n$,我们考虑$2g$维模群的子群$\mathbb{G}_{g,n}$在Siegel上半度平面$g$中保持某一轨迹$\mathcal{W}_{g,n}$不变.我们解决的问题描述一个基本域的模块作用的子群$\mathcal{W}_{g,n}$。我们的动机来自几何:$g$和$n$代表的属和分离型的一般实黎曼曲面的椭圆的数量;轨迹$\mathcal{W}_{g,n}$包含相应的周期矩阵计算关于一些特定的基础在同调。在本文中,我们制定了一个通用程序来解决当$g$为偶数且$n$等于1时的问题。对于等于2或4的$g$,详细地进行了显式计算。

英文摘要:

For some positive integers $g$ and $n$ we consider a subgroup $\mathbb{G}_{g,n}$ of the $2g$-dimensional modular group keeping invariant a certain locus $\mathcal{W}_{g,n}$ in the Siegel upper half plane of degree $g$. We address the problem of describing a fundamental domain for the modular action of the subgroup on $\mathcal{W}_{g,n}$. Our motivation comes from geometry: $g$ and $n$ represent the genus and the number of ovals of a generic real Riemann surface of separated type; the locus $\mathcal{W}_{g,n}$ contains the corresponding period matrix computed with respect to some specific basis in the homology. In this paper we formulate a general procedure to solve the problem when $g$ is even and $n$ equals one. For $g$ equal to two or four the explicit calculations are worked out in full detail.

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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