Abstract
Negatively invariant compact sets of autonomous and nonautonomous dynamical systems on a metric space, the latter formulated in terms of processes, are shown to contain a strictly invariant set and hence entire solutions. For completeness the positively invariant case is also considered. Both discrete and continuous time systems are considered. In the nonautonomous case, the various types of invariant sets are in fact families of subsets of the state space that are mapped onto each other by the process. A simple example shows the usefulness of the result for showing the occurrence of a bifurcation in a nonautonomous system.
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Dedicated to Russell Johnson on the occasion of his sixtieth birthday.
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Kloeden, P.E., Marín-Rubio, P. Negatively Invariant Sets and Entire Solutions. J Dyn Diff Equat 23, 437–450 (2011). https://doi.org/10.1007/s10884-010-9196-8
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DOI: https://doi.org/10.1007/s10884-010-9196-8
Keywords
- Entire solutions
- Invariant sets
- Positive invariant sets
- Negative invariant sets
- Autonomous dynamical systems
- Nonautonomous dynamical systems
- Processes