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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 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

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 study (almost) limited operators in Banach lattices and their relations to L-weakly compact, semi-compact, and Dunford-Pettis operators. Several further related topics are investigated.

泛函分析 · 数学 2025-02-14 Safak Alpay , Svetlana Gorokhova

We give some characterizations of disjointly weakly compact sets in Banach lattices, namely, those sets in whose solid hulls every disjoint sequence converges weakly to zero. As an application, we prove that a bounded linear operator from a…

泛函分析 · 数学 2023-04-27 Bo Xiang , Jin Xi Chen , Lei Li

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

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

In this paper we introduce and study a new class of operators related to norm bounded sets on Banach Lattice and which brings together several classical classes of operators (as o-weakly compact operators, b-weakly compact operators,…

泛函分析 · 数学 2022-09-27 Hassan Khabaoui , Jawad H'michane , Kamal Elfahri

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

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

Motivated by the equivalent definition of a continuous operator between Banach spaces in terms of weakly null nets, we introduce two types of continuous operators between Banach lattices using unbounded absolute weak convergence. We…

泛函分析 · 数学 2020-04-07 Omid Zabeti

In this paper, we introduce and study new concepts of order L-weakly and order M-weakly compact operators. As consequences, we obtain some characterizations of Banach lattices with order continuous norms or whose topological duals have…

泛函分析 · 数学 2020-05-26 Driss Lhaimer , Khalid Bouras , Mohammed Moussa

Several recent papers investigated unbounded versions of order and norm convergences in Banach lattices. In this paper, we study the unbounded variant of weak convergence and its relationship with other convergences. In particular, we…

泛函分析 · 数学 2017-09-05 Omid Zabeti

This paper is devoted to the study of $DW$-compact operators, that is, those operators which map disjointly weakly compact sets in a Banach lattice onto relatively compact sets. We show that $DW$-compact operators are precisely the…

泛函分析 · 数学 2024-06-06 Jin Xi Chen , Jingge Feng

In this paper, we will study some properties of b-weakly compact operators and we will investigate their relationships to some variety of operators on the normed vector lattices. With some new conditions, we show that the modulus of an…

泛函分析 · 数学 2019-05-28 Kazem Haghnejad Azar

We study operators carrying disjoint bounded subsets of a Banach lattice into compact, weakly compact, and limited subsets of a Banach space. Surprisingly, these operators behave differently with classical compact, weakly compact, and…

泛函分析 · 数学 2024-10-01 Eduard Emelyanov , Nazife Erkurşun-Özcan , Svetlana Gorokhova

Let $X_1, \ldots, X_m$ be Banach spaces and let $E_1, \ldots, E_m,F$ be Banach lattices. Our main results read as follows: (i) The linear adjoint $A^*$ of a continuous multilinear operator $A \colon X_1 \times \cdots \times X_m \to F$ is…

泛函分析 · 数学 2025-12-10 Geraldo Botelho , Ariel Monção

This paper is devoted to the study of two classes of operators related to disjointly weakly compact sets, which we call $DW$-DP operators and $DW$-limited operators, respectively. They carry disjointly weakly compact subsets of a Banach…

泛函分析 · 数学 2024-12-03 Jin Xi Chen , Jingge Feng

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 characterize Banach lattices on which each Dunford-Pettis operator (or weak Dunford-Pettis) is unbounded absolute weak Dunford-Pettis operator and the converse.

泛函分析 · 数学 2020-06-23 Hui Li , Zili Chen
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