Abstract
We generalize the notions of hypercyclic operators, \(\mathfrak {U}\)-frequently hypercyclic operators and frequently hypercyclic operators by introducing a new concept in linear dynamics, namely \(\mathcal {A}\)-hypercyclicity. We then state an \(\mathcal {A}\)-hypercyclicity criterion, inspired by the hypercyclicity criterion and the frequent hypercyclicity criterion, and we show that this criterion characterizes the \(\mathcal {A}\)-hypercyclicity for weighted shifts. We also investigate which density properties can the sets \({N(x, U)=\{n\in \mathbb {N}\ ; \ T^nx\in U\}}\) have for a given hypercyclic operator, and we study the new notion of reiteratively hypercyclic operators.
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We would like to thank the referee, whose comments improved the presentation of the paper, and especially for the present version of Proposition 3.
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Dedicated to Professor José Bonet on the occasion of his sixtieth birthday
This work is supported in part by MEC and FEDER, Project MTM2013-47093-P, and by GVA, Projects PROMETEOII/2013/013 and ACOMP/2015/005. The second author was a postdoctoral researcher of the Belgian FNRS.
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Bès, J., Menet, Q., Peris, A. et al. Recurrence properties of hypercyclic operators. Math. Ann. 366, 545–572 (2016). https://doi.org/10.1007/s00208-015-1336-3
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DOI: https://doi.org/10.1007/s00208-015-1336-3