نتایج جستجو برای: hypercyclic operator

تعداد نتایج: 94434  

Journal: :Concrete Operators 2022

Abstract We study the cyclic, supercyclic and hypercyclic properties of a composition operator C ϕ on Segal-Bargmann space ℋ(ℰ), where ( z ) = Az + b , A is bounded linear ℰ, ∈ ℰ with || ⩽ 1 * belongs to range I – )½. Specifically, under some conditions symbol we show that if cyclic then A* but converse need not be true. also cyclic. Further there no ℋ(ℰ) for certain class symbols .

Journal: :Proceedings of the Royal Society of Edinburgh: Section A Mathematics 2019

A sequence ${T_n}_{n=1}^{infty}$ of bounded linear  operators on a separable infinite dimensional Hilbert space $mathcal{H}$ is called subspace-diskcyclic with respect to the closed subspace $Msubseteq mathcal{H},$ if there exists a vector $xin mathcal{H}$ such that the disk-scaled orbit ${alpha T_n x: nin mathbb{N}, alpha inmathbb{C}, | alpha | leq 1}cap M$ is dense in $M$. The goal of t...

Journal: :Journal of Mathematical Analysis and Applications 2016

Journal: :Integral Equations and Operator Theory 2021

By the linearization property of Lipschitz-free spaces, any Lipschitz map $$f : M \rightarrow N$$ between two pointed metric spaces may be extended uniquely to a bounded linear operator $${\widehat{f}} {\mathcal {F}}(M) {F}}(N)$$ their corresponding spaces. In this note, we explore connections dynamics self-maps M$$ and extensions {F}}(M)$$ . This not only allows us relate topological dynamical...

Journal: :Advances in Mathematics 2022

Let $P$ be the isotropic nearest neighbor transition operator on a homogeneous tree. We consider $\lambda$-eigenfunctions of for $\lambda$ outside its $\ell^2$ spectrum, i.e., eigenfunctions with eigenvalue $\gamma=\lambda - 1$ Laplace $Delta=P- \mathbb I$, and also $\lambda-$polyharmonic functions, that is, union kernels $(Delta-\gamma I)^n$ $n\geqslant 0$. prove that, suitable Banach space ge...

Journal: :Advances in Mathematics 2021

The question of whether a hypercyclic operator T acting on Fréchet algebra X admits or not an vectors (but 0) has been addressed in the recent literature. In this paper we give new criteria and characterisations context convolution operators H(C) backward shifts general sequence algebra. Analogous questions arise for stronger properties like frequent hypercyclicity. trend sufficient condition w...

2000
JOEL H. SHAPIRO

This paper establishes decomposability for composition operators induced on the Hardy spaces H (1 ≤ p < ∞) by parabolic linear fractional self-maps of the unit disc that are not automorphisms. This result, along with a recent theorem of Miller and Miller [15], shows that no such composition operator is supercyclic. The work here completes part of a previous investigation [1] where the author an...

Journal: :J. London Math. Society 2014
F. Bayart G. Costakis

An important result of León-Saavedra and Müller says that the rotations of hypercyclic operators remain hypercyclic. We provide extensions of this result for orbits of operators which are rotated by unimodular complex numbers with polynomial phases. On the other hand, we show that this fails for unimodular complex numbers whose phases grow to infinity too quickly, say at a geometric rate. A fur...

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