Non-autonomous Morse-decomposition and Lyapunov functions for gradient-like processes

Aragão-Costa, E.; Caraballo, T.; Carvalho, A.; Langa, J.

doi:10.1090/S0002-9947-2013-05810-2

Non-autonomous Morse-decomposition and Lyapunov functions for gradient-like processes
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by E. R. Aragão-Costa, T. Caraballo, A. N. Carvalho and J. A. Langa PDF

Trans. Amer. Math. Soc. 365 (2013), 5277-5312 Request permission

Abstract:

We define (time dependent) Morse-decompositions for non-autonomous evolution processes (non-autonomous dynamical systems) and prove that a non-autonomous gradient-like evolution process possesses a Morse-decomposition on the associated pullback attractor. We also prove the existence of an associated Lyapunov function which describes the gradient behavior of the system. Finally, we apply these abstract results to non-autonomous perturbations of autonomous gradient-like evolution processes (semigroups or autonomous dynamical systems).

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