Convergence of Periodically-Forced Rank-Type Equations

2010/06/03 by Tyrus Berry, Timothy Sauer, Berry, Tyrus +1
Mathematics · Medicine · Physics and Astronomy · #Dynamical Systems (math.DS) #FOS: Mathematics #Mathematical and Theoretical Epidemiology and Ecology Models #Quantum chaos and dynamical systems #Stochastic processes and statistical mechanics #math.DS

paper · pdf · doi:10.48550/arxiv.1006.0684

arxiv created 2010/06/03 · openalex publication_date 2010/06/03 · arxiv updated 2010/06/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Consider a difference equation which takes the k-th largest output of m functions of the previous m terms of the sequence. If the functions are also allowed to change periodically as the difference equation evolves this is analogous to a differential equation with periodic forcing. A large class of such non-autonomous difference equations are shown to converge to a periodic limit which is independent of the initial condition. The period of the limit does not depend on how far back each term is allowed to look back in the sequence, and is in fact equal to the period of the forcing.

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