Results 21 to 30 of about 1,203,844 (201)

Quantum stochastic convolution cocycles II [PDF]

open access: yes, 2008
Schurmann's theory of quantum Levy processes, and more generally the theory of quantum stochastic convolution cocycles, is extended to the topological context of compact quantum groups and operator space coalgebras.
Skalski, Adam G., Lindsay, J. Martin
core   +4 more sources

Compact and Weakly Compact Composition Operators on BMOA [PDF]

open access: yesComplex Analysis and Operator Theory, 2011
We show that a composition operator induced by an analytic self-map of the unit disc in the complex plane is weakly compact on the space BMOA precisely when the operator is compact on BMOA. As a crucial step we simplify the compactness criterion due to Smith for composition operators on BMOA and show that his condition on the Nevanlinna counting ...
Saksman Eero   +3 more
openaire   +2 more sources

Fuzzy Convergence Sequence and Fuzzy Compact Operators on Standard Fuzzy Normed Spaces

open access: yesمجلة بغداد للعلوم, 2021
The main purpose of this work is to introduce some types of fuzzy convergence sequences of operators defined on a standard fuzzy normed space (SFN-spaces) and investigate some properties and relationships between these concepts.
Raghad I. Sabri
doaj   +1 more source

Lipschitz integral operators represented by vector measures

open access: yesApplied General Topology, 2021
In this paper we introduce the concept of Lipschitz Pietsch-p-integral mappings, (1≤p≤∞), between a metric space and a Banach space. We represent these mappings by an integral with respect to a vector measure defined on a suitable compact Hausdorff ...
Elhadj Dahia, Khaled Hamidi
doaj   +1 more source

Stability of three-layer differential-difference schemes with weights in the space of summable functions with supports in a network-like domain [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2023
The work is a natural continuation of the authors' earlier studies in the analysis of the conditions for the weak solvability of one-dimensional initial-boundary value problems with a space variable changing on a graph (network) in the direction of ...
Hoang, Van Nguyen   +1 more
doaj   +1 more source

Some characterizations of weakly compact operator on Banach lattices [PDF]

open access: yes, 2011
summary:We establish necessary and sufficient conditions under which each operator between Banach lattices is weakly compact and we give some ...
Aqzzouz, Belmesnaoui, Bouras, Khalid
core   +1 more source

Analysis of a High-Accuracy Numerical Method for Time-Fractional Integro-Differential Equations

open access: yesFractal and Fractional, 2023
A high-order finite difference numerical scheme based on the compact difference operator is proposed in this paper for time-fractional partial integro-differential equations with a weakly singular kernel, where the time-fractional derivative term is ...
Ziyang Luo, Xindong Zhang, Leilei Wei
doaj   +1 more source

Weak Compactness of Almost Limited Operators

open access: yesJournal of Function Spaces, 2014
This paper is devoted to the relationship between almost limited operators and weakly compact operators. We show that if F is a σ-Dedekind complete Banach lattice, then every almost limited operator T:E→F is weakly compact if and only if E is reflexive ...
Aziz Elbour   +2 more
doaj   +1 more source

Invariant Finitely Additive Measures for General Markov Chains and the Doeblin Condition

open access: yesMathematics, 2023
In this paper, we consider general Markov chains with discrete time in an arbitrary measurable (phase) space. Markov chains are given by a classical transition function that generates a pair of conjugate linear Markov operators in a Banach space of ...
Alexander Zhdanok
doaj   +1 more source

Application of ${\rm (L)$ sets to some classes of operators} [PDF]

open access: yesMathematica Bohemica, 2016
The paper contains some applications of the notion of $L$ sets to several classes of operators on Banach lattices. In particular, we introduce and study the class of order ${\rm (L)$-Dunford-Pettis operators, that is, operators from a Banach space into a
Kamal El Fahri   +3 more
doaj   +1 more source

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