Results 61 to 70 of about 884 (163)

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

On Some Subspace Codiskcyclic Operators in Banach Spaces

International Journal of Mathematics and Mathematical Sciences
This paper introduces the concepts of subspace codiskcyclicity and subspace codisk transitivity, providing criteria and examples that highlight their distinct properties compared to traditional codiskcyclic operators and hypercyclic operators.
Peter Masong Slaa, Santosh Kumar, Marco Mpimbo   +2 more
doaj   +1 more source

CONVOLUTION OPERATORS ON BANACH SPACE VALUED FUNCTIONS [PDF]

Proceedings of the National Academy of Sciences, 1962
Benedek, A., Calderón, Alberto P., Panzone, R.   +2 more
openaire   +2 more sources