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Limit laws of entrance times for homeomorphisms of the circle

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Abstract

Given a homeomorphismf of the circle with irrational rotation number and a descending chain of renormalization intervalsj n off, we consider for each interval the point process obtained by marking the times for the orbit of a point in the circle to enterJ n. Assuming the point is randomly chosen by the unique invariant probability measure off, we obtain necessary and sufficient conditions which guarantee convergence in law of the corresponding point process and we describe all the limiting processes. These conditions are given in terms of the convergent subsequences of the orbit of the rotation number off under the Gauss transformation and under a certain realization of its natural extension. We also consider the case when the point is randomly chosen according to Lebesgue measure,f being a diffeomorphism which isC 1-conjugate to a rotation, and we show that the same necessary and sufficient conditions guarantee convergence in this case.

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Correspondence to Zaqueu Coelho.

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This work is part of Projeto Temático de Equipe “Transição de Fase Dinâmica em Sistemas Evolutivos” financially supported by FAPESP grant 90/3918-5.

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Coelho, Z., de Faria, E. Limit laws of entrance times for homeomorphisms of the circle. Israel J. Math. 93, 93–112 (1996). https://doi.org/10.1007/BF02761095

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  • DOI: https://doi.org/10.1007/BF02761095

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