Results 101 to 110 of about 66,942 (205)

Existence of fixed points of large MR-Kannan contractions in Banach Spaces

Applied General Topology
The purpose of this paper is to introduce the class of large MR-Kannan contractions on Banach space that contains the classes of Kannan, enriched Kannan, large Kannan, MR-Kannan contractions and some other classes of nonlinear operators.
Rizwan Anjum, Mujahid Abbas, Muhammad Waqar Akram, Stojan Radenović   +3 more
doaj   +1 more source

Local spectral radius formulas for a class of unbounded operators on Banach spaces

, 2011
We exhibit a general class of unbounded operators in Banach spaces which can be shown to have the single-valued extension property, and for which the local spectrum at suitable points can be determined. We show that a local spectral radius formula holds,
Andersen, Nils Byrial, de Jeu, Marcel
core  

High order approximation theory for Banach space valued functions

Journal of Numerical Analysis and Approximation Theory, 2017
Here we study quantitatively the high degree of approximation of sequences of linear operators acting on Banach space valued di§erentiable functions to the unit operator. These operators are bounded by real positive linear companion operators.
George A. Anastassiou
doaj   +2 more sources

ON OPERATORS WITH THE SPHERICAL PROPERTY

Научный вестник МГТУ ГА, 2016
Properties of continuous positively homogeneous operators of degree via various functions (e.g. measures of noncompactness) on all bounded subsets of a Banach space are studied.
N. A. Erzakova
doaj  

On the essential spectra of matrix operators and applications

Electronic Journal of Differential Equations, 2007
In this paper, we investigate the essential spectra of some matrix operators on Banach spaces. The results obtained are used for describing the essential spectra of differential operators.
Mondher Damak, Aref Jeribi
doaj  

Recurrence of Composition Operators on Discrete Banach Spaces

Axioms
Let (T,d) be an unbounded and locally finite metric space that contains a distinguished element o. Let L∞(T) denote the discrete Banach space and L0(T) its subspace of functions vanishing at infinity.
Li Zhang, Mingchao Liu, Liang Zhang
doaj   +1 more source

The extension of two-Lipschitz operators

Applied General Topology
The paper deals with some further results concerning the class of two-Lipschitz operators. We prove first an isometric isomorphism identification of two-Lipschitz operators and Lipschitz operators.
Elhadj Dahia
doaj   +1 more source

Existence of tripled fixed points for a class of condensing operators in Banach spaces. [PDF]

ScientificWorldJournal, 2014
Karakaya V, Bouzara Nel H, Doğan K, Atalan Y.   +3 more
europepmc   +1 more source

An interpolative class of two-Lipschitz mappings of composition type

Applied General Topology
The paper deals with some further results concerning the class of two-Lipschitz operators. We prove first an isometric isomorphism identification of two-Lipschitz operators and Lipschitz operators.
Khaled Hamidi, Abdelhamid Tallab
doaj   +1 more source

OPERATORS ON BANACH ALGEBRA VALUED FUNCTION SPACES

Tamkang Journal of Mathematics, 1992
Let $S$ be a locally compact Hausdorff space and let $A$ be a Banach algebra. Denote by $C_0(S, A)$ the Banach algebra of all $A$-valued continuous functions vanishing at infinity on $S$. Properties of bounded linear operators on $C_0(S,A)$, like multiplicativity, are characterized by Choy in terms of their representing measures ...
openaire   +4 more sources