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Chaotic time series in financial processes consisting of savings with piecewise constant monthly contributions

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  • Jos'e Pedro Gaiv~ao
  • Benito Pires

Abstract

We investigate the time series generated by an elementary and deterministic financial process that consists in making monthly contributions to a savings account subjected to the devaluation by a monthly negative real interest rate. The monthly contribution is a piecewise constant function of the account balance. We show that a dichotomy holds for such a financial time series: either the financial time series are asymptotic to finitely many periodic sequences or the financial time series have an uncountable (Cantor) set of {\omega}-limit points. We also provide explicit parameters for which the financial process is chaotic in the sense that the financial time series have sensitive dependence on initial conditions at points of a Cantor attractor.

Suggested Citation

  • Jos'e Pedro Gaiv~ao & Benito Pires, 2022. "Chaotic time series in financial processes consisting of savings with piecewise constant monthly contributions," Papers 2206.11933, arXiv.org, revised Feb 2023.
    • Handle: RePEc:arx:papers:2206.11933
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