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arXiv 0810.4936math.DSmath.GR
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扩展动力系统的组合模型

Combinatorial models of expanding dynamical systems

Volodymyr Nekrashevych

摘要:

我们定义了比部分自覆盖更一般结构的迭代单值群。这种推广使得有可能定义扩展动力系统的组合模型的自然概念。证明了广义动力系统的自然定义的“朱利亚集“只依赖于相应的迭代单值群。然后,我们证明了每个扩展动力系统的朱利亚集是由归纳剪切粘贴规则构造的单纯复形的逆极限。

英文摘要:

We define iterated monodromy groups of more general structures than partial self-covering. This generalization makes it possible to define a natural notion of a combinatorial model of an expanding dynamical system. We prove that a naturally defined "Julia set" of the generalized dynamical systems depends only on the associated iterated monodromy group. We show then that the Julia set of every expanding dynamical system is an inverse limit of simplicial complexes constructed by inductive cut-and-paste rules.

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