2007
DOI: 10.1016/j.aim.2006.09.010
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Unimodular eigenvalues, uniformly distributed sequences and linear dynamics

Abstract: We study increasing sequences of positive integers (n k ) k 1 with the following property: every bounded linear operator T acting on a separable Banach (or Hilbert) space with sup k 1 T n k < ∞ has a countable set of unimodular eigenvalues. Whether this property holds or not depends on the distribution (modulo one) of sequences (n k α) k 1 , α ∈ R, or on the growth of n k+1 /n k . Counterexamples to some conjectures in linear dynamics are given. For instance, a Hilbert space operator which is frequently hyperc… Show more

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Cited by 47 publications
(83 citation statements)
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“…Theorem 4.5.1 ([34] To complete the gure, we would like to mention here the sources for the counter examples: Mixing operators which are not chaotic are easy to nd; Bayart and Grivaux [14] constructed a weighted shift on c 0 that is frequently hypercyclic, but neither chaotic nor mixing; Badea and Grivaux [3] found operators on a Hilbert space that are frequently hypercyclic and chaotic but not mixing. Also, Bayart and Grivaux [13] provided easy examples of topologically mixing operators that are not frequently hypercyclic.…”
Section: Discussionmentioning
confidence: 99%
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“…Theorem 4.5.1 ([34] To complete the gure, we would like to mention here the sources for the counter examples: Mixing operators which are not chaotic are easy to nd; Bayart and Grivaux [14] constructed a weighted shift on c 0 that is frequently hypercyclic, but neither chaotic nor mixing; Badea and Grivaux [3] found operators on a Hilbert space that are frequently hypercyclic and chaotic but not mixing. Also, Bayart and Grivaux [13] provided easy examples of topologically mixing operators that are not frequently hypercyclic.…”
Section: Discussionmentioning
confidence: 99%
“…It was only in recent years that it deserved special attention thanks to the work of Bayart and Grivaux [12,13]. The papers [3,14,10,39,59,86] contain recent advances on the subject.…”
Section: Introductionmentioning
confidence: 99%
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“…During the last years it has deserved special attention thanks to the work of Bayart and Grivaux [17,18]. For instance, the papers [3,19,21,43,67,95] contain recent advances on the subject. In this section we present some basic measure-theoretic properties that linear dynamical systems have.…”
Section: Measure-theoretic Propertiesmentioning
confidence: 99%