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1.
Robustly invariant sets in fiber contracting bundle flows
Oliver Butterley, Carlangelo Liverani, 2013, original scientific article

Keywords: Robust, invariant sets, fiber contracting, bundle flows
Published in RUNG: 26.10.2018; Views: 2753; Downloads: 0
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2.
Weak forms of shadowing in topological dynamics
Sergey Kryzhevich, Danila Cherkashin, 2017, original scientific article

Abstract: We consider continuous maps of compact metric spaces. It is proved that every pseudotrajectory with sufficiently small errors contains a subsequence of positive density that is point-wise close to a subsequence of an exact trajectory with the same indices. Also, we study homeomorphisms such that any pseudotrajectory can be shadowed by a finite number of exact orbits. In terms of numerical methods this property (we call it multishadowing) implies possibility to calculate minimal points of the dynamical system. We prove that for the non-wandering case multishadowing is equivalent to density of minimal points. Moreover, it is equivalent to existence of a family of $\varepsilon$-networks ($\varepsilon > 0$) whose iterations are also $\varepsilon$-networks. Relations between multishadowing and some ergodic and topological properties of dynamical systems are discussed.
Keywords: Topological dynamics, minimal points, invariant measure, shadowing, chain recurrence, $\varepsilon$-networks, syndetic sets
Published in RUNG: 27.07.2017; Views: 4151; Downloads: 0
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