Results 31 to 40 of about 172,888 (278)

The essential spectrum, norm, and spectral radius of abstract multiplication operators

open access: yesConcrete Operators, 2023
Let EE be a complex Banach lattice and TT is an operator in the center Z(E)={T:∣T∣≤λIfor someλ}Z\left(E)=\left\{T:| T| \le \lambda I\hspace{0.33em}\hspace{0.1em}\text{for some}\hspace{0.1em}\hspace{0.33em}\lambda \right\} of EE. Then, the essential norm ‖
Schep Anton R.
doaj   +1 more source

Multiple Perron-Frobenius operators [PDF]

open access: yesPhysical Review E, 2001
A cycle expansion technique for discrete sums of several PF operators, similar to the one used in standard classical dynamical zeta-function formalism is constructed. It is shown that the corresponding expansion coefficients show an interesting universal behavior, which illustrates the details of the interference between the particlar mappings entering
openaire   +5 more sources

Generalized Crofoot transform and applications

open access: yesConcrete Operators, 2023
Matrix-valued asymmetric truncated Toeplitz operators are compressions of multiplication operators acting between two model spaces. These are the generalization of matrix-valued truncated Toeplitz operators. In this article, we describe symbols of matrix-
Khan Rewayat, Farooq Aamir
doaj   +1 more source

Multiplication Operators on Weighted Zygmund Spaces of the First Cartan Domain

open access: yesAxioms, 2023
Inspired by some recent studies of the multiplication operators on holomorphic function spaces of the classical domains such as the open unit disk, the unit ball and the unit polydisk, the purpose of the present paper is to study just the operators that ...
Zhi-Jie Jiang
doaj   +1 more source

A note on preservation of spectra for two given operators [PDF]

open access: yesMathematica Bohemica, 2020
We study the relationships between the spectra derived from Fredholm theory corresponding to two given bounded linear operators acting on the same space.
Carlos Carpintero   +3 more
doaj   +1 more source

Certain Classes of Operators on Some Weighted Hyperbolic Function Spaces

open access: yesJournal of Mathematics, 2021
In this paper, some classes of concerned multiplication operators consisting of analytic and hyperbolic functions are defined and considered. Furthermore, some properties such as boundedness and compactness of the new operators are discussed.
A. El-Sayed Ahmed, Amnah E. Shammaky
doaj   +1 more source

Multiplication operators on $L^{p}$ [PDF]

open access: yesStudia Mathematica, 2019
We show that every operator on $L^{p ...
openaire   +3 more sources

Multiplication Operators and Dynamical Systems [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1992
AbstractLet X be a completely regular Hausdorff space, let V be a system of weights on X and let T be a locally convex Hausdorff topological vector space. Then CVb(X, T) is a locally convex space of vector-valued continuous functions with a topology generated by seminorms which are weighted analogues of the supremum norm.
Singh, R. K., Singh Manhas, Jasbir
openaire   +2 more sources

Multiplicative forms and Spencer operators [PDF]

open access: yesMathematische Zeitschrift, 2014
Motivated by our attempt to recast Cartan's work on Lie pseudogroups in a more global and modern language, we are brought back to the question of understanding the linearization of multiplicative forms on groupoids and the corresponding integrability problem.
Marius Crainic   +2 more
openaire   +3 more sources

An Approach to Neutrosophic Hyper Soft Rough Matrix and its Application [PDF]

open access: yesNeutrosophic Sets and Systems
This paper introduces a novel of Neutrosophic Hyper Soft Rough Matrix (NHSRM). We discuss various operators on NHSRM such as addition, multiplication, scalar multiplication and complement.
J. Boobalan, E. Mathivadhana
doaj   +1 more source

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