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

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 Morsedecomposition on the associated pullback attractor. We also prove the existence of an associated...

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Bibliographic Details
Authors: Aragão Costa, Eder Ritis, Caraballo Garrido, Tomás, Carvalho, Alexandre Nolasco, Langa Rosado, José Antonio
Format: article
Publication Date:2013
Country:España
Institution:Universidad de Sevilla (US)
Repository:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/22771
Online Access:http://hdl.handle.net/11441/22771
https://doi.org/10.1090/S0002-9947-2013-05810-2
Access Level:Open access
Keyword:Non-autonomous Morse decomposition
Lyapunov functions for nonautonomous dynamical systems
robustness of dynamical structures
Description
Summary: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 Morsedecomposition 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).