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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 introduce and study the enveloping norms of regularly P-operators between Banach lattices E and F, where P is a subspace of the space L(E,F) of continuous operators from E to F. We prove that if P is closed in L(E,F) in the operator norm…

泛函分析 · 数学 2022-12-02 Safak Alpay , Eduard Emelyanov , Svetlana Gorokhova

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

By introducing the concepts of order almost Dunford-Pettis and almost weakly limited operators in Banach lattices, we give some properties of them related to some well known classes of operators, such as, order weakly compact, order…

泛函分析 · 数学 2015-02-03 H. Ardakani , S. M. S. Modarres Mosadegh

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

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

We introduce and study the class of weak almost limited operators. We establish a characterization of pairs of Banach lattices $E$, $F$ for which every positive weak almost limited operator $T:E\rightarrow F$ is almost limited (resp. almost…

泛函分析 · 数学 2014-03-18 A. Elbour , N. Machrafi , M. Moussa

We introduce a class of operators which is called unbounded Dunford-Pettis. In this paper, we study some properties of the operators, relationships with the other classes of operators and the space of these operators.

泛函分析 · 数学 2019-09-25 Wang Zhangjun , Chen Zili , Chen Jinxi , Ouyang Miao

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

We study the class of $(p,q)$-regular operators between quasi-Banach lattices. In particular, a representation of this class as the dual of a certain tensor norm for Banach lattices is given. We also provide some factorization results for…

泛函分析 · 数学 2017-08-14 Enrique A. Sánchez-Pérez , Pedro Tradacete

We investigate the duality and norm completeness in the classes of limitedly--L-weakly compact and Dunford--Pettis--L-weakly compact and operators from Banach spaces to Banach lattices.

泛函分析 · 数学 2023-09-11 Safak Alpay , Eduard Emelyanov , Svetlana Gorokhova

This paper introduces and investigates novel properties of uaw-Dunford-Pettis operators on Banach spaces, exploring their relationships with other classes of operators. We further define and characterize new property of Banach lattices.…

泛函分析 · 数学 2026-04-21 Sanaa Boumnidel , Noufissa Hafidi

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

We introduce and study the class of almost limited sets in Banach lattices, that is, sets on which every disjoint weak$^{*}$ null sequence of functionals converges uniformly to zero. It is established that a Banach lattice has order…

泛函分析 · 数学 2013-09-10 Jin Xi Chen , Zi Li Chen , Guo Xing Ji

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

Suppose $E$ is a Banach lattice. Recently, there have been some motivating contexts regarding the known Banach-Saks property and the Grothendieck property from an order point of view. In this paper, we establish these results for operators…

泛函分析 · 数学 2022-12-19 Omid Zabeti

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 study $un$-dual (in symbol, $\ud{E}$) of Banach lattice $E$ and compare it with topological dual $E^*$. If $E^*$ has order continuous norm, then $E^* = \ud{E}$. We introduce and study weakly unbounded norm topology…

泛函分析 · 数学 2020-06-11 Mina Matin , Kazem Haghnejad Azar , Razi Alavizadeh

The $p$-Gelfand Phillips property ($1\le p<\infty$) is studied in spaces of operators. Dunford - Pettis type like sets are studied in Banach spaces. We discuss Banach spaces $X$ with the property that every $p$-convergent operator $T:X\to…

泛函分析 · 数学 2018-03-02 Ioana Ghenciu

Recently, J. H'michane et al. introduced the class of weak* Dunford-Pettis operators on Banach spaces, that is, operators which send weakly compact sets onto limited sets. In this paper the domination problem for weak* Dunford-Pettis…

泛函分析 · 数学 2019-02-20 Jin Xi Chen , Zi Li Chen , Guo Xing Ji
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