Almost Periodic Dynamics of Perturbed Infinite-Dimensional Dynamical Systems

Details Almost Periodic Dynamics of Perturbed Infinite-Dimensional Dynamical Systems Almost Periodic Dynamics of Perturbed Infinite-Dimensional Dynamical Systems

2011-03-11

arxiv.org/abs/1103.2371v1

Mathematics

Dynamical Systems

Scientific paper

This paper is concerned with the dynamics of an infinite-dimensional gradient system under small almost periodic perturbations. Under the assumption that the original autonomous system has a global attractor given as the union of unstable manifolds of a finite number of hyperbolic equilibrium solutions, we prove that the perturbed non-autonomous system has exactly the same number of almost periodic solutions. As a consequence, the pullback attractor of the perturbed system is given by the union of unstable manifolds of these finitely many almost periodic solutions. An application of the result to the Chafee-Infante equation is discussed.

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