English

$\tilde{o}$rder-norm continuous operators and $\tilde{o}$rder weakly compact operators

Functional Analysis 2022-10-26 v1

Abstract

Let EE be a sublattice of a vector lattice FF. A continuous operator TT from the vector lattice EE into a normed vector space XX is said to be o~\tilde{o}rder-norm continuous whenever xαFo0x_\alpha\xrightarrow{Fo}0 implies Txα.0Tx_\alpha\xrightarrow{\Vert.\Vert}0 for each (xα)αE(x_\alpha)_\alpha\subseteq E. Our mean from the convergence xαFox x_\alpha\stackrel{Fo} {\longrightarrow} x is that there exists another net (yα) \left(y_\alpha\right) in FF with the same index set satisfying yα0 y_\alpha\downarrow 0 in FF and xαxyα \vert x_\alpha - x \vert \leq y_\alpha for all indexes α \alpha . In this paper, we will study some properties of this new class of operators and its relationships with some known classifications of operators. We also define the new class of operators that named o~\tilde{o}rder weakly compact operators. A continuous operator T:EXT: E \rightarrow X is said to be o~\tilde{o}rder weakly compact, if T(A) T(A) in XX is a relatively weakly compact set for each FoFo-bounded AEA\subseteq E. In this manuscript, we study some properties of this class of operators and its relationships with o~\tilde{o}rder-norm continuous operators.

Keywords

Cite

@article{arxiv.2210.13975,
  title  = {$\tilde{o}$rder-norm continuous operators and $\tilde{o}$rder weakly compact operators},
  author = {Sajjad Ghanizadeh Zare and Kazem Haghnejad Azar and Mina Matin and Somayeh Hazrati},
  journal= {arXiv preprint arXiv:2210.13975},
  year   = {2022}
}
R2 v1 2026-06-28T04:27:37.910Z