Abstract
Let G be an abelian semigroup of matrices on \({\mathbb {K}}^{n}\) (\(n\ge 1\)), \({\mathbb {K}} = {\mathbb {R}} \text { or } {\mathbb {C}}\). It is called subspace-hypercyclic for a non-zero subspace M of \({\mathbb {K}}^{n}\), if there exists \(x\in {\mathbb {K}}^{n}\) such that \(G(x)\cap M\) is dense in M. In this paper, we give a complete characterization of subspace-hypercyclicity for abelian semigroups G of matrices on \({\mathbb {R}}^{n}\), \(n\ge 1\) in terms of spectral density property. The complex case is done by the authors in Herzi and Marzougui (J Math Anal Appl 487:123960, 2020). In particular, we construct for any \(n\ge 2\), a one parameter family of abelian semigroups which are subspace-hypercyclic for a plane, but not subspace-hypercyclic for any straight line in \({\mathbb {R}}^{n}\). Others examples of abelian semigroups of matrices on \({\mathbb {R}}^{n}\) satisfying some special properties are given. Further, we construct for every non-zero subspace M of \({\mathbb {K}}^{n}\), \(n\ge 1\), a hypercyclic abelian semigroup of \(\mathrm {GL}(n,{\mathbb {K}})\) that is subspace-hypercyclic for M. This result can be seen as the analogous for abelian semigroups to that given for operators on Banach spaces in Augusto and Pellegrini (Adv Oper Theory 5:1814–1824, 2020).
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Acknowledgements
The authors would like to thank the referee for valuable comments and suggestions. This work was supported by the research unit: “Dynamical systems and their applications” [UR17ES21], Ministry of Higher Education and Scientific Research, Faculty of Science of Bizerte, Bizerte, Tunisia.
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Herzi, S., Marzougui, H. Subspace-Hypercyclic Abelian Semigroups of Matrices on \({\mathbb {R}}^{n}\). Results Math 76, 185 (2021). https://doi.org/10.1007/s00025-021-01494-3
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DOI: https://doi.org/10.1007/s00025-021-01494-3