Results 1 to 10 of about 1,809 (166)

Frequently hypercyclic and Devaney chaotic $ C_{0} $-semigroups indexed by complex sectors

AIMS Mathematics
In this paper, the definitions of frequent hypercyclicity and Devaney chaos for a $ C_0 $-semigroup $\left\{T_{t}\right\}_{t\in\Delta}$ indexed by a complex sector $ \Delta $ are revisited.
Shengnan He, Zongbin Yin
doaj   +2 more sources

About Subspace-Frequently Hypercyclic Operators [PDF]

Sahand Communications in Mathematical Analysis, 2020
In this paper, we introduce subspace-frequently hypercyclic operators. We show that these operators are subspace-hypercyclic and there are subspace-hypercyclic  operators that are not subspace-frequently hypercyclic. There is a criterion like to subspace-
Mansooreh Moosapoor, Mohammad Shahriari
doaj   +1 more source

Hypercyclicity of adjoint of convex weighted shift and multiplication operators on Hilbert spaces [PDF]

Mathematics and Computational Sciences, 2021
A bounded linear operator $T$ on a Hilbert space $\mathfrak{H}$ is convex, if $$\|\mathfrak{T}^{2}v\|^2-2\|\mathfrak{T}v\|^2+\|v\|^2 \geq 0.$$ In this paper, sufficient conditions to hypercyclicity of adjoint of unilateral (bilateral) forward (backward ...
Lotfollah Karimi
doaj   +1 more source

Of sand and stone: Thick time, cyclicality, and Anthropocene poetics in ‘Nomadland’

NECSUS, 2023
This paper presents an ecocinematic reading of Chloé Zhao’s 2020 feature No- madland. Drawing on David Farrier’s notion of Anthropocene poetics, it argues that the film presents an image of ‘thick time’ through which human’s embeddedness in deep time is ...
Gert Jan Harkema
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On some kinds of dense orbits in general nonautonomous dynamical systems

Nonautonomous Dynamical Systems, 2020
We study the theory of universality for the nonautonomous dynamical systems from topological point of view related to hypercyclicity. The conditions are provided in a way that Birkhoff transitivity theorem can be extended.
Pourbarat Mehdi
doaj   +1 more source

M-hypercyclicity of C0-semigroup and Svep of its generator

Concrete Operators, 2021
Let 𝒯 = (Tt)t≥0 be a C0-semigroup on a separable infinite dimensional Banach space X, with generator A. In this paper, we study the relationship between the single valued extension property of generator A, and the M-hypercyclicity of the C0-semigroup ...
Toukmati A.
doaj   +1 more source

Hypercyclic operators on spaces of block-symmetric analytic functions

Karpatsʹkì Matematičnì Publìkacìï, 2013
The paper contains proof of the hypercyclicity of ``symmetrictranslation'' on the algebras of block-symmetric analyticfunctions of bounded type on an isomorphic copy of $ell_1$
V. V. Kravtsiv, Z. G. Mozhyrovska, A. V. Zagorodnyuk   +2 more
doaj   +3 more sources

Compactness and hypercyclicity of co-analytic Toeplitz operators on de Branges-Rovnyak spaces

Concrete Operators, 2020
We study the compactness and the hypercyclicity of Toeplitz operators Tϕ¯,b{T_{\bar \varphi ,b}} with co-analytic and bounded symbols on de Branges-Rovnyak spaces ℋ(b).
Alhajj Rim
doaj   +1 more source

Simultaneous universality [PDF]

, 2017
In this paper, the notion of simultaneous universality is introduced, concerning operators having orbits that simultaneously approximate any given vector.
Bernal González, Luis, Jung, Andreas
core   +2 more sources

$q$-Frequent hypercyclicity in spaces of operators [PDF]

, 2016
We provide conditions for a linear map of the form $C_{R,T}(S)=RST$ to be $q$-frequently hypercyclic on algebras of operators on separable Banach spaces.
Gupta, Manjul, Mundayadan, Aneesh
core   +1 more source