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arXiv · 1503.03114

Self-similarity of Jankins-Neumann ziggurat

Anna Gordenko
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Abstract

Primarily having emerged from a topological question, Jankins-Neumann ziggurat also appears in the theory of dynamical systems on the circle. It describes an answer to the following question: given the rotation numbers of two orientation-preserving circle homeomorphisms, what can be said about the rotation number of their composition? In this paper, we consider a formula, proved by Calegari and Walker, as definition of ziggurat. Using it, we establish its self-similarity. Also, we propose a short proof of equivalence between Calegary-Walker and Jankins-Neumann's descriptions of the ziggurat.

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Anna Gordenko. 2015-03-10. Self-similarity of Jankins-Neumann ziggurat. https://arxiv.org/abs/1503.03114

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