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相关论文: $DW$-compact operators on Banach lattices

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We give a positive answer to the question of K. Bouras [`Almost Dunford-Pettis sets in Banach lattices', \textit{Rend. Circ. Mat. Palermo (2)} \textbf{ 62} (2013), 227--236] concerning weak compactness of almost Dunford-Pettis sets in…

泛函分析 · 数学 2016-09-23 Jin Xi Chen , Lei Li

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…

泛函分析 · 数学 2024-10-29 Eduard Emelyanov

We introduce new class of limitedly L-weakly compact operators from a Banach space to a Banach lattice. This class is a proper subclass of the Bourgain-Diestel operators and it contains properly the class of L-weakly compact operators. We…

泛函分析 · 数学 2023-06-29 Safak Alpay , Svetlana Gorokhova , Eduard Emelyanov

We prove that the class of Banach function lattices in which all relatively weakly compact sets are equi-integrable sets (i.e. spaces satisfying the Dunford-Pettis criterion) coincides with the class of 1-disjointly homogeneous Banach…

泛函分析 · 数学 2019-12-18 Karol Lesnik , Lech Maligranda , Jakub Tomaszewski

Several recent papers investigated lattice copies and unbounded convergences in Banach lattices. In this paper, we first solve the problem of RV and LA which is an extension of the well-known James distortion theorem. Using lattice copies…

泛函分析 · 数学 2022-03-17 Zhangjun Wang , Zili Chen

Several recent papers were devoted to various modifications of limited, Grothendieck, and Dunford--Pettis operators, etc., through involving the Banach lattice structure. In the present paper, it is shown that many of these operators appear…

泛函分析 · 数学 2022-09-07 Eduard Emelyanov , Svetlana Gorokhova

We show that the solid hull of every weakly precompact set of a Banach lattice $E$ is weakly precompact if and only if every order interval in $E$ is weakly precompact, or equivalently, if and only if every disjoint weakly compact set is…

泛函分析 · 数学 2022-07-14 Bo Xiang , Jinxi Chen , Lei Li

Several recent papers investigated unbounded convergences in Banach lattices. Combine all unbounded convergences, including unbounded order (norm, absolute weak, absolute weak*) convergence, we characterize L-weakly compact sets, L-weakly…

泛函分析 · 数学 2021-04-06 Zhangjun Wang , Zili Chen , Jinxi Chen

We study almost L(M) weakly compact and order L(M) weakly compact operators in Banach spaces. Several further topics related to these operators are investigated.

泛函分析 · 数学 2024-07-04 Safak Alpay , Svetlana Gorokhova

We introduce the class of unbounded $M$-weakly operators and the class of unbounded $L$-weakly compact operators. We investigate some properties for these new classification of operators and we study relation between them and $M$-weakly…

泛函分析 · 数学 2021-09-16 Zahra Niktab , Kazem Haghnejad Azar , Razi Alavizadeh , Saba Sadeghi Gavgani

Recently, J.X. Chen et al. introduced and studied the class of almost limited sets in Banach lattices. In this paper we establish some characterizations of almost limited sets in Banach lattices (resp. wDP* property of Banach lattices),…

泛函分析 · 数学 2014-04-29 N. Machrafi , A. Elbour , M. Moussa

Based on the concept of unbounded absolutely weakly convergence, we give new characterizations of L-weakly compact sets. As applications, we find some properties of order weakly compact operators. Also, a new characterizations of order…

泛函分析 · 数学 2020-05-05 Hassan Khabaoui , Jawad H'michane , Kamal El Fahri

In this paper, we investigate more about relationship between $uaw$ -convergence (resp. $un$-convergence) and the weak convergence. More precisely, we characterize Banach lattices on which every weak null sequence is $uaw$-null. Also, we…

泛函分析 · 数学 2020-05-04 Aziz Elbour

In this paper, we introduce the concept of a pseudo weakly compact operator of order $ p $ between Banach spaces. Also we study the notion of $ p $-Dunford-Pettis relatively compact property which is in "general" weaker than the…

泛函分析 · 数学 2018-10-15 M. Alikhani

A continuous operator $T$ between two Banach lattices $E$ and $F$ is called almost order-weakly compact, whenever for each almost order bounded subset $A$ of $E$, $T(A)$ is a relatively weakly compact subset of $F$. In Theorem 4, we show…

泛函分析 · 数学 2022-01-10 Mina Matin , Mina Matin , Kazem Haghnejad Azar , Ali Ebadi

L- and M-weakly compact operators were introduced by Meyer-Nieberg in the beginning of seventies in attempts of a diversification of the concept of weakly compact operators via imposing Banach lattice structure on the range or on the domain…

泛函分析 · 数学 2023-05-10 Safak Alpay , Eduard Emelyanov , Svetlana Gorokhova

This is a survey on disjointly homogeneous Banach lattices and their applicactions. Several structural properties of this class are analyzed. In addition we show how these spaces provide a natural framework for studying the compactness of…

泛函分析 · 数学 2015-09-07 Julio Flores , Francisco L. Hernández , Pedro Tradacete

In this paper, we introduce and study a new classes of operators, named AM-unbounded norm compact operators. We study the the basic properties of the new operator and we investigate the lattice-order and topology property of the operator…

泛函分析 · 数学 2019-10-07 Wang Zhangjun , Chen Zili , Chen Jinxi

In this article, the class of all Dunford-Pettis $ p $-convergent operators and $ p $-Dunford-Pettis relatively compact property on Banach spaces are investigated. Moreover, we give some conditions on Banach spaces $ X $ and $ Y $ such that…

泛函分析 · 数学 2019-05-06 M. Alikhani

First we characterize the Banach lattices E whose biduals have the positive Schur property by means of second adjoints of operators on E being almost Dunford-Pettis. Next we extend some known results concerning conditions on the Banach…

泛函分析 · 数学 2024-10-02 Geraldo Botelho , Luis Alberto Garcia