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arXiv 1601.03342math.GT
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双曲曲面上映射类群轨道的计数

Counting Mapping Class group orbits on hyperbolic surfaces

Maryam Mirzakhani

摘要:

设$S_{g,n}$是亏格为$g $的曲面,其上有$n$标记点.设$X$是$S_{g,n}$上具有$n$尖点的完备双曲度量.闭曲线$γ\in π_{1}(S_{g,n})$的每一个合痕类$[γ]$都包含$X$上唯一的闭测地线。令$\ell_γ(X)$表示$X$上$γ$的测地线代表的双曲长度。本文研究了$S_{g,n}.$上固定拓扑类型的闭曲线长度的渐近增长性.作为应用,我们可以得到$X$上长度为$\leq L$的闭曲线的个数,即$s^{k}_{X}(L)$的增长性.本文还讨论了$X$上大长度随机Pants分解的性质。这两个结果都是基于具有$n$尖点的亏格为$g$的双曲曲面的模空间$\mathcal{M}_{g,n}$上的自然丛上的地震流的遍历性质。

英文摘要:

Let $S_{g,n}$ be a surface of genus $g $ with $n$ marked points. Let $X$ be a complete hyperbolic metric on $S_{g,n}$ with $n$ cusps. Every isotopy class $[γ]$ of a closed curve $γ\in π_{1}(S_{g,n})$ contains a unique closed geodesic on $X$. Let $\ell_γ(X)$ denote the hyperbolic length of the geodesic representative of $γ$ on $X$. In this paper, we study the asymptotic growth of the lengths of closed curves of a fixed topological type on $S_{g,n}.$ As an application, one can obtain the asymptotics of the growth of $s^{k}_{X}(L)$, the number of closed curves of length $\leq L$ on $X$ with at most $k$ self-intersections. We also discuss properties of random pants decomposition of large length on $X$. Both these results are based on ergodic properties of the earthquake flow on a natural bundle over the moduli space $\mathcal{M}_{g,n}$ of hyperbolic surfaces of genus $g$ with $n$ cusps.

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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