Journal of Generalized Lie Theory and Applications

Existence Theorems in Linear Chaos

Stanislav Shkarin

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Abstract

Chaotic linear dynamics deals primarily with various topological ergodic properties of semigroups of continuous linear operators acting on a topological vector space. In this survey paper, we treat questions of characterizing which of the spaces from a given class support a semigroup of prescribed shape satisfying a given topological ergodic property.

In particular, we characterize countable inductive limits of separable Banach spaces that admit a hypercyclic operator, show that there is a non-mixing hypercyclic operator on a separable infinite dimensional complex Fréchet space $X$ if and only if $X$ is non-isomorphic to the space $ω$ of all sequences with coordinatewise convergence topology. It is also shown for any $k ∈ \mathbb{N}$, any separable infinite dimensional Fréchet space $X$ non-isomorphic to $ω$ admits a mixing uniformly continuous group $\{T_t\}_{t∈C^n}$ of continuous linear operators and that there is no supercyclic strongly continuous operator semigroup $\{T_t\}_{t≥0}$ on $ω$. We specify a wide class of Fréchet spaces $X$, including all infinite dimensional Banach spaces with separable dual, such that there is a hypercyclic operator $T$ on $X$ for which the dual operator $T′$ is also hypercyclic. An extension of the Salas theorem on hypercyclicity of a perturbation of the identity by adding a backward weighted shift is presented and its various applications are outlined.

Article information

Source
J. Gen. Lie Theory Appl., Volume 9, Number S1 (2015), 34 pages.

Dates
First available in Project Euclid: 11 November 2016

Permanent link to this document
https://projecteuclid.org/euclid.jglta/1478833228

Digital Object Identifier
doi:10.4172/1736-4337.S1-009

Mathematical Reviews number (MathSciNet)
MR3637853

Zentralblatt MATH identifier
1371.37132

Keywords
Hypercyclic operators Mixing semigroups Backward weighted shifts Bilateral weighted shifts

Citation

Shkarin, Stanislav. Existence Theorems in Linear Chaos. J. Gen. Lie Theory Appl. 9 (2015), no. S1, 34 pages. doi:10.4172/1736-4337.S1-009. https://projecteuclid.org/euclid.jglta/1478833228


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