Results 1 to 10 of about 1,203,844 (201)

Applications for Unbounded Convergences in Banach Lattices [PDF]

open access: yesFractal and Fractional, 2022
Several recent papers investigated unbounded convergences in Banach lattices. The focus of this paper is to apply the results of unbounded convergence to the classical Banach lattice theory from a new perspective.
Zhangjun Wang, Zili Chen
doaj   +24 more sources

Some Properties of Unbounded M-Weakly and Unbounded L-Weakly Compact Operators [PDF]

open access: goldJournal of Mathematics, 2023
We introduce the class of unbounded M-weakly compact operators and the class of unbounded L-weakly compact operators. We investigate some properties for this new classification of operators, and we study the relation between them and M-weakly compact and
Zahra Niktab   +3 more
doaj   +3 more sources

A note on topologically b-order bounded sets and generalized b-weakly compact operators

open access: diamondTaiwanese Journal of Mathematics, 2022
In this paper every b-weakly compact operator is shown to factor through a KB-space. Also we give some necessary and sufficient conditions for a continuous operator T : E -> X from a Banach lattice into a Banach space to be a b-weakly compact. Moreover, we investigated the order structure of b-weakly compact operator.
Nabil Machrafi, Birol Altın
core   +6 more sources

Compact and weakly compact Lipschitz operators [PDF]

open access: greenProceedings of the Royal Society of Edinburgh: Section A Mathematics, 2022
Any Lipschitz map $f : M \to N$ between two pointed metric spaces may be extended in a unique way to a bounded linear operator $\widehat {f} : \mathcal {F}(M) \to \mathcal {F}(N)$ between their corresponding Lipschitz-free spaces. In this paper, we give a necessary and sufficient condition for $\widehat {f}$ to be compact in terms of metric conditions ...
Arafat Abbar   +2 more
openalex   +6 more sources

Uniformly factoring weakly compact operators and parametrised dualisation [PDF]

open access: goldForum of Mathematics, Sigma, 2021
This article deals with the problem of when, given a collection $\mathcal {C}$ of weakly compact operators between separable Banach spaces, there exists a separable reflexive Banach space Z with a Schauder basis so that every element in $\mathcal {C ...
L. Antunes, K. Beanland, B. M. Braga
doaj   +2 more sources

On the class of $\text{b}$-L-weakly and order M-weakly compact operators [PDF]

open access: diamondMathematica Bohemica, 2020
In this paper, we introduce and study new concepts of b-L-weakly and order M-weakly compact operators. As consequences, we obtain some characterizations of KB-spaces.
Driss Lhaimer   +2 more
doaj   +2 more sources

Lipschitz Operators Associated with Weakly $p$-Compact and Unconditionally $p$-Compact Sets

open access: diamondJournal of Advanced Research in Natural and Applied Sciences
The study introduces different categories of Lipschitz operators linked with weakly $p$-compact and unconditionally $p$-compact sets. It explores some properties of these operator classes derived from linear operators associated with these sets and ...
Ramazan İnal, Ayşegül Keten Çopur
doaj   +2 more sources

On collectively L-weakly compact sets of operators [PDF]

open access: greenAnalysis Mathematica
A set of bounded linear operators from a Banach space to a Banach lattice is collectively L-weakly compact whenever union of images of the unit ball is L-weakly compact. We extend the Meyer-Nieberg duality theorem to collectively L-weakly compact sets of operators, study relations between these sets and collectively almost limited sets, and discuss the
Eduard Emelyanov
openalex   +4 more sources

The modulus of a weakly compact operator

open access: yesMathematische Zeitschrift, 1987
We answer the following two questions: (I) What order complete Banach lattices E have the property: if K is a compact Hausdorff space, then every weakly compact operator C(K)\(\to E\) is regular (in the sense of Riesz space theory)? (II) What weakly Fatou order complete Banach lattices E have the property: if K is a compact Hausdorff space and if T is ...
Groenewegen, G., Rooij, A. van
exaly   +3 more sources

Some properties of b-weakly compact operators on Banach lattices

open access: greenپژوهش‌های ریاضی, 2021
In this paper we give some necessary and sufficient conditions for which each Banach lattice  is    space and we study some properties of b-weakly compact operators from a Banach lattice  into a Banach space .
Kazem Haghnejad azar, Akbar Bahramnezhad
doaj   +1 more source

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