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Limit-set action of discrete Moebius groups.

机译:离散的Moebius组的极限集作用。

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摘要

The first part studies the accumulation of the zeros of successive derivatives of a Fuchsian automorphic function, thus generalizing Pólya's “Shire Theorem” and solving a problem of classical complex analysis with the tools of modern hyperbolic geometry. It is shown how the orbital approach toward limit points influences the topology of the function's final set and how to generalize the Shire Theorem in situations which render it invalid in its original form.; Solving a problem posed by Dennis Sullivan, the main part of the thesis is dedicated to the construction of a map on the limit set of a discrete Möbius group with the property that it identifies group-equivalent limit points. First, the presentation of the group is used to model its end set as compact metric space in which each point is identified by an infinite symbolic expansion in the generators. The expansions, in turn, induce a, partition of the end set on which the map is defined piecewise continuously, expanding, and orbit-equivalent to the group. Under this map, the partition is then shown to be a Markov partition in the sense of Smale-space theory.; To round off the picture, a measure is constructed on the end set, and the flow induced by the orbit-equivalent map is shown to be ergodic under this measure. An estimate of the Hausdorff dimension of the end set completes the investigation on the level of geometric group theory.; The group's action on the ball model permits the transferal of the construction from the end set to the limit set. By defining a suitable projection from the space of symbolic expansions to hyperbolic space, the orbit-equivalent map is pushed into the ball model—which completes the solution of the originally posed problem.
机译:第一部分研究了Fuchsian自纯函数的连续导数的零点的累积,从而推广了Pólya的“ Shire定理”,并使用现代双曲几何工具解决了经典复杂分析的问题。它显示了朝向极限点的轨道进近方式如何影响函数最终集合的拓扑,以及如何在使Shire定理无效的情况下将Shire定理推广为原始形式。为了解决Dennis Sullivan提出的问题,论文的主要部分致力于在离散Möbius群的极限集上构造具有对应于群等效极限点的属性的映射。首先,该组的表示用于将其终端集建模为紧凑的度量空间,其中每个点由生成器中的无限符号扩展标识。反过来,这些扩展又导致了对端集的划分,在该端集上连续地分段定义了地图,并不断扩展并与该组在轨道上等效。在该映射下,该分区从Smale空间理论的角度显示为马氏分区。为了使图片更圆润,在终端设备上构建了一个度量,并且在该度量下,等效轨道图所引起的流动被证明是遍历的。对终端集的Hausdorff维数的估计完成了对几何群理论的研究。该小组对球模型的作用允许将构造从最终设置转移到极限设置。通过定义从符号扩展空间到双曲空间的合适投影,等效轨道图被推入球模型中,从而完成了对最初提出的问题的解决。

著录项

  • 作者

    Weiss, Matthias Manfred.;

  • 作者单位

    Northern Illinois University.;

  • 授予单位 Northern Illinois University.;
  • 学科 Mathematics.
  • 学位 Ph.D.
  • 年度 2000
  • 页码 98 p.
  • 总页数 98
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 数学;
  • 关键词

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