Computation with perturbed dynamical systems

  • Authors:
  • Olivier Bournez;Daniel S. GraçA;Emmanuel Hainry

  • Affiliations:
  • Ecole Polytechnique, LIX, 91128 Palaiseau Cedex, France;CEDMES/FCT, Universidade do Algarve, C. Gambelas, 8005-139 Faro, Portugal and SQIG/Instituto de Telecomunicaçíes, Lisboa, Portugal;Université de Lorraine, Nancy, France and LORIA, Campus Scientifique, BP 239, 54506 Vanduvre-lès-Nancy, France

  • Venue:
  • Journal of Computer and System Sciences
  • Year:
  • 2013

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Abstract

This paper analyzes the computational power of dynamical systems robust to infinitesimal perturbations. Previous work on the subject has delved on very specific types of systems. Here we obtain results for broader classes of dynamical systems (including those systems defined by Lipschitz/analytic functions). In particular we show that systems robust to infinitesimal perturbations only recognize recursive languages. We also show the converse direction: every recursive language can be robustly recognized by a computable system. By other words we show that robustness is equivalent to decidability.