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Numerical analysis of dynamical systems

Published online by Cambridge University Press:  07 November 2008

Andrew M. Stuart
Andrew M. Stuart
Affiliation:
Program in Scientific Computing and Computational MathematicsDivision of Applied MechanicsStanford UniversityCalifornia, CA94305-4040, USA E-mail: stuart@sccm.Stanford.edu
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Abstract

This article reviews the application of various notions from the theory of dynamical systems to the analysis of numerical approximation of initial value problems over long-time intervals. Standard error estimates comparing individual trajectories are of no direct use in this context since the error constant typically grows like the exponential of the time interval under consideration.

Instead of comparing trajectories, the effect of discretization on various sets which are invariant under the evolution of the underlying differential equation is studied. Such invariant sets are crucial in determining long-time dynamics. The particular invariant sets which are studied are equilibrium points, together with their unstable manifolds and local phase portraits, periodic solutions, quasi-periodic solutions and strange attractors.

Particular attention is paid to the development of a unified theory and to the development of an existence theory for invariant sets of the underlying differential equation which may be used directly to construct an analogous existence theory (and hence a simple approximation theory) for the numerical method.

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Type
Research Article
Information
Acta Numerica , Volume 3 , January 1994 , pp. 467 - 572
Copyright
Copyright © Cambridge University Press 1994

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