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We study the existence of algebras of hypercyclic vectors for weighted backward shifts on sequence spaces of directed trees with the coordinatewise product. When $V$ is a rooted directed tree, we show the set of hypercyclic vectors of any…

泛函分析 · 数学 2024-11-25 Arafat Abbar , Fernando Costa

In this paper, we generalize to the context of algebras some recent results on the existence of common hypercyclic vectors for families of products of backward shift operators. We also give, in a multi-dimensional setting, a positive answer…

泛函分析 · 数学 2021-10-18 Fernando Costa

We prove the existence of algebras of hypercyclic vectors in three cases: convolution operators, composition operators, and backward shift operators.

泛函分析 · 数学 2018-04-06 Frédéric Bayart

We show that the multiples of the backward shift operator on the spaces $\ell_{p}$, $1\leq p<\infty$, or $c_{0}$, when endowed with coordinatewise multiplication, do not possess frequently hypercyclic algebras. More generally, we…

动力系统 · 数学 2019-04-04 Javier Falcó , Karl-G. Grosse-Erdmann

The question of whether a hypercyclic operator $T$ acting on a Fr{\'e}chet algebra $X$ admits or not an algebra of hypercyclic vectors (but 0) has been addressed in the recent literature. In this paper we give new criteria and…

泛函分析 · 数学 2020-09-17 Frédéric Bayart , Fernando Costa Júnior , Dimitris Papathanasiou

We show that several convolution operators on the space of entire functions, such as the MacLane operator, support a dense hypercyclic algebra that is not finitely generated. Birkhoff's operator also has this property on the space of…

泛函分析 · 数学 2019-03-26 Juan Bès , Dimitris Papathanasiou

We provide necessary and sufficient conditions on the existence of common hypercyclic vectors for multiples of the backward shift operator along sparse powers. Our main result strongly generalizes corresponding results which concern the…

泛函分析 · 数学 2015-06-15 Nikos Tsirivas

This paper is devoted to the study of typical properties (in the Baire Category sense) of certain classes of continuous linear operators acting on Fr\'echet algebras, endowed with the topology of pointwise convergence. Our main results show…

泛函分析 · 数学 2025-06-23 William Alexandre , Clifford Gilmore , Sophie Grivaux

We prove that the space $l^2$ contains a dense set of vectors which are hypercyclic simultaneously for all multiples of the backward shift operator by constants of absolute value greater than 1.

泛函分析 · 数学 2016-09-07 Evgeny Abakumov , Julia Gordon

We provide an alternative proof to those by Shkarin and by Bayart and Matheron that the operator $D$ of complex differentiation supports a hypercyclic algebra on the space of entire functions. In particular we obtain hypercyclic algebras…

泛函分析 · 数学 2019-03-26 Juan Bès , José Alberto Conejero , Dimitrios Papathanasiou

In this paper, we characterize hypercyclic sequences of weighted translation operators on an Orlicz space in the context of locally compact hypergroups.

泛函分析 · 数学 2020-03-27 Vishvesh Kumar , Seyyed Mohammad Tabatabaie

We study the existence of hypercyclic algebras for convolution operators $\Phi(D)$ on the space of entire functions whose symbol $\Phi$ has unimodular constant term. In particular, we provide new eigenvalue criteria for the existence of…

泛函分析 · 数学 2019-05-09 J. Bes , R. Ernst , A. Prieto

We study common frequently hypercyclic vectors for countable families of weighted backward shifts acting on $\ell_p$ spaces, $1\leq p<\infty$. Using probabilistic techniques, we develop a general existence criterion, complemented by a…

泛函分析 · 数学 2026-05-08 Augustin Mouze , Vincent Munnier

We study frequently recurrent unilateral and bilateral backward shift operators on Fr\'echet sequence spaces. We prove that if a backward shift admits a non-zero frequently recurrent vector, then it supports a dense set of such vectors, so…

泛函分析 · 数学 2026-04-23 Rodrigo Cardeccia , Santiago Muro

Given a countable dense subset D of an infinite-dimensional separable Hilbert space H the set of operators for which every vector in D except zero is hypercyclic (weakly supercyclic) is residual for the strong (resp. weak) operator topology…

泛函分析 · 数学 2014-09-25 Pavel Zorin-Kranich

In this paper, we characterize hypercyclic generalized bilateral weighted shift operators on the standard Hilbert module over the C*-algebra of compact operators on the separable Hilbert space. Moreover, we give necessary and sufficient…

算子代数 · 数学 2024-01-17 Stefan Ivkovic

We introduce a class of linear bounded invertible operators on Banach spaces, called shift operators, which comprises weighted backward shifts and models finite products of weighted backward shifts and dissipative composition operators. We…

动力系统 · 数学 2024-07-31 Maria Carvalho , Udayan B. Darji , Paulo Varandas

An operator $T$ acting on a separable complex Hilbert space $H$ is said to be hypercyclic if there exists $f\in H$ such that the orbit $\{T^n f:\ n\in \mathbb{N}\}$ is dense in $H$. Godefroy and Shapiro \cite{GoSha} characterized those…

泛函分析 · 数学 2023-07-06 Mohamed Amouch , Fernando León-Saavedra , M. P. Romero de la Rosa

In this paper, we study the linear dynamical properties of shift operators on some classes of Segal algebras. Moreover, we characterize hypercyclic generalized bilateral shift operators on the standard Hilbert module.

泛函分析 · 数学 2023-06-22 Stefan Ivkovic , Seyyed Mohammad Tabatabaie

Let $D$ be the differentiation operator $Df=f'$ acting on the Fr\'echet space $\H$ of all entire functions in one variable with the standard (compact-open) topology. It is known since 1950's that the set $H(D)$ of hypercyclic vectors for…

泛函分析 · 数学 2012-09-06 Stanislav Shkarin
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