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In this work we shall prove new results on the theory of convolution operators on spaces of entire functions. The focus is on hypercyclicity results for convolution operators on spaces of entire functions of a given type and order; and…

Functional Analysis · Mathematics 2018-05-29 Vinícius V. Fávaro , Ariosvaldo M. Jatobá

In this paper, a criterion for a sequence of composition operators defined on the space of holomorphic functions in a complex domain to be frequently hypercyclic is provided. Such criterion improves some already known special cases and, in…

Complex Variables · Mathematics 2024-02-09 Luis Bernal-González , M. Carmen Calderón-Moreno , Andreas Jung , José A. Prado Bassas

It is proved that, if $(P_n)$ is a sequence of polynomials with complex coefficients having unbounded valences and tending to infinity at sufficiently many points, then there is an infinite dimensional closed subspace of entire functions,…

Complex Variables · Mathematics 2025-01-17 L. Bernal-González , M. C. Calderón-Moreno , J. López-Salazar , J. A. Prado-Bassas

A criterion to obtain frequent hypercyclicity for a sequence of convolution operators on the space of entire functions on the complex plane is provided. The criterion involves that the generating functions of the operators do not vanish on…

Complex Variables · Mathematics 2026-02-24 L. Bernal-González , M. C. Calderón-Moreno , J. A. Prado-Bassas

In this paper we use Nachbin's holomorphy types to generalize some recent results concerning hypercyclic convolution operators on Fr\'echet spaces of entire functions of bounded type of infinitely many complex variables.

Functional Analysis · Mathematics 2011-01-21 F. J. Bertoloto , G. Botelho , V. V. Fávaro , A. M. Jatobá

A classical theorem due to G.D. Birkhoff states that there exists an entire function whose translates approximate any given entire function, as accurately as desired, over any ball of the complex plane. We show this result may be…

Functional Analysis · Mathematics 2007-05-23 Richard M. Aron , Juan P. Bes

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…

Functional Analysis · Mathematics 2012-09-06 Stanislav Shkarin

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…

Functional Analysis · Mathematics 2019-03-26 Juan Bès , José Alberto Conejero , Dimitrios Papathanasiou

In this note we study the random entire functions defined as power series $f(z) = \sum_{n=0}^\infty \frac{X_n}{n!} z^n$ with independent and identically distributed coefficients $(X_n)$ and show that, under very weak assumptions, they are…

Functional Analysis · Mathematics 2012-09-28 Miika Nikula

We show that the non-zero multiples of the derivative operator and the non-zero multiples of non-trivial translation operators on the space of entire functions share a common hypercyclic subspace, i.e. a closed infinite-dimensional subspace…

Dynamical Systems · Mathematics 2016-11-28 Quentin Menet

We provide criteria for the existence of upper frequently hypercyclic subspaces and for common hypercyclic subspaces, which include the following consequences. There exist frequently hypercyclic operators with upper-frequently hypercyclic…

Dynamical Systems · Mathematics 2015-12-22 Juan Bès , Quentin Menet

We give necessary and sufficient condition so that we have d-hypercyclicity for operators who map a holomorphic function to a partial sum of the Taylor expansion. This problem is connected with doubly universal Taylors series and this is an…

Complex Variables · Mathematics 2015-04-02 Vagia Vlachou

We prove the existence of common hypercyclic, entire functions for certain families of translation operators.

Complex Variables · Mathematics 2014-12-01 Nikos Tsirivas

We describe a class of topological vector spaces admitting a mixing uniformly continuous operator group ${T_t}_{t\in\C^n}$ with holomorphic dependence on the parameter $t$. This result covers those existing in the literature. We also…

Functional Analysis · Mathematics 2012-09-06 Stanislav Shkarin

A continuous linear operator L defined on the space of entire functions H(C) is said to be an extended $lambda$-eigenoperator of the differentiation operator D provided DL = $lambda$LD. Here we fully characterize when an extended…

Functional Analysis · Mathematics 2022-07-28 Manuel González , Fernando León-Saavedra , María Pilar Romero de la Rosa

We give necessary and sufficient conditions for an operator on a separable Hilbert space to satisfy the hypercyclicity criterion.

Functional Analysis · Mathematics 2007-05-23 B Yousefi , H Rezaei

Let $X$ be a complex topological vector space with dim$(X)>1$ and $\mathcal{B}(X)$ the space of all continuous linear operators on $X$. In this paper, we extend the concept of supercyclicity of a single operators and strongly continuous…

Functional Analysis · Mathematics 2018-10-18 Mohamed Amouch , Otmane Benchiheb

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…

Functional Analysis · Mathematics 2019-05-09 J. Bes , R. Ernst , A. Prieto

We study frequent hypercyclicity in the context of strongly continuous semigroups of operators. More precisely, we give a criterion (sufficient condition) for a semigroup to be frequently hypercyclic, whose formulation depends on the Pettis…

Functional Analysis · Mathematics 2010-06-04 E. M. Mangino , A. Peris

We first generalize the results of Le\'on and M\"uller [Studia Math. 175(1) 2006] on hypercyclic subspaces to sequences of operators on Fr\'echet spaces with a continuous norm. Then we study the particular case of iterates of an operator T…

Functional Analysis · Mathematics 2014-02-20 Quentin Menet
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