Abstract
We give general sufficient conditions to prove the convergence of marked point processes that keep record of the occurrence of rare events and of their impact for non-autonomous dynamical systems. We apply the results to sequential dynamical systems associated to both uniformly and non-uniformly expanding maps and to random dynamical systems given by fibred Lasota Yorke maps.
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Notes
We remark that the sets \(U^{(\kappa )}_{j,n,i}\) depend on j (which is the maximum run of consecutive non exceedances within the same cluster) only for \(\kappa >0\). Since these \(U^{(\kappa )}_{j,n,i}\) are defined recursively, we decided to keep j in the index of the first step of the construction, \(U^{(0)}_{j,n,i}\), although strictly speaking there is no j dependence for \(\kappa =0\).
\(T_\beta ^p(\zeta )=\zeta \) and p is the minimum integer with such property
The result in [7], Lemma 4, is stated in a different manner. It requires \(\psi \) in \(L^{\infty }(m)\). Since the density \(h_{\omega }\) is in \(L^{\infty }(m)\) too as an element of BV(X, m), and moreover is essentially bounded uniformly in \(\omega \) by (4.4), we get the \(\Vert \cdot \Vert _{1}\) norm on the right hand side of (4.6), as it is shown by the proof of Lemma 4 in [7].
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Communicated by Alessandro Giuliani.
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MM was partially supported by FCT Grant SFRH/BPD/89474/2012, which is supported by the program POPH/FSE. ACMF and JMF were partially supported by FCT Projects FAPESP/19805/2014 and PTDC/MAT-PUR/28177/2017, with national funds. All authors would like to thank the support of CMUP, which is financed by national funds through FCT, under the project with reference UIDB/00144/2020 and PTDC/MAT-CAL/3884/2014. JMF would like to thank the University of Toulon for the appointment as “Visiting Professor” during the year 2018. SV acknowledges the support of the Centro di Ricerca Matematica Ennio de Giorgi (Pisa) under the project of UniCredit Bank R&D group through the Dynamics and Information Theory Institute at the Scuola Normale Superiore.
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Freitas, A.C.M., Freitas, J.M., Magalhães, M. et al. Point Processes of Non stationary Sequences Generated by Sequential and Random Dynamical Systems. J Stat Phys 181, 1365–1409 (2020). https://doi.org/10.1007/s10955-020-02630-z
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DOI: https://doi.org/10.1007/s10955-020-02630-z
Keywords
- Recurrence for non-autonomous systems
- Sequential dynamical systems
- Random dynamical systems
- Rare events point processes