On the sighting of unicorns: A variational approach to computing invariant sets in dynamical systems.

@article{Junge2017OnTS,
  title={On the sighting of unicorns: A variational approach to computing invariant sets in dynamical systems.},
  author={Oliver Junge and Ioannis G. Kevrekidis},
  journal={Chaos},
  year={2017},
  volume={27 6},
  pages={
          063102
        }
}
We propose to compute approximations to invariant sets in dynamical systems by minimizing an appropriate distance between a suitably selected finite set of points and its image under the dynamics. We demonstrate, through computational experiments, that this approach can successfully converge to approximations of (maximal) invariant sets of arbitrary topology, dimension, and stability, such as, e.g., saddle type invariant sets with complicated dynamics. We further propose to extend this approach… 
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