English

Semi-order continuous operators on vector spaces

Functional Analysis 2020-06-09 v1

Abstract

In this manuscript, we will study both o~\tilde{o}-convergence in (partially) ordered vector spaces and a kind of convergence in a vector space VV. A vector space VV is called semi-order vector space (in short semi-order space), if there exist an ordered vector space WW and an operator TT from VV into WW. In this way, we say that VV is semi-order space with respect to {W,T}\{W, T\}. A net {xα}V\{x_\alpha\}\subseteq V is said to be {W,T}{\{W,T\}}-order convergent to a vector xVx\in V (in short we write xα{W,T}xx_\alpha\xrightarrow {\{W, T\}}x), whenever there exists a net {yβ}\{y_\beta\} in WW satisfying yβ0y_\beta \downarrow 0 in WW and for each β\beta, there exists α0\alpha_0 such that ±(TxαTx)yβ\pm (Tx_\alpha -Tx) \leq y_\beta whenever αα0\alpha \geq \alpha_0. In this manuscript, we study and investigate some properties of {W,T}\{W,T\}-convergent nets and its relationships with other order convergence in partially ordered vector spaces. Assume that V1V_1 and V2V_2 are semi-order spaces with respect to {W1,T1}\{{W_1}, T_1\} and {W2,T2}\{W_2, T_2\}, respectively. An operator SS from V1V_1 into V2V_2 is called semi-order continuous, if xα{W1,T1}xx_\alpha\xrightarrow {\{{W_1}, T_1\}}x implies Sxα{W2,T2}SxSx_\alpha\xrightarrow {\{W_2, T_2\}}Sx whenever {xα}V1\{x_\alpha\}\subseteq V_1. We study some properties of this new classification of operators.

Keywords

Cite

@article{arxiv.2006.04065,
  title  = {Semi-order continuous operators on vector spaces},
  author = {Kazem Haghnejad Azar and Mina Matin and Razi Alavizadeh},
  journal= {arXiv preprint arXiv:2006.04065},
  year   = {2020}
}
R2 v1 2026-06-23T16:07:18.363Z