Order compact and unbounded order compact operators

Authors

NAZİFE ERKURŞUN ÖZCAN
NİYAZİ ANIL GEZER
ŞAZİYE ECE ÖZDEMİR
İREM MESUDE GEYİKÇİ

DOI

10.3906/mat-2004-68

Abstract

We investigate properties of order compact, unbounded order compact and relatively uniformly compact operators acting on vector lattices. An operator is said to be order compact if it maps an arbitrary order bounded net to a net with an order convergent subnet. Analogously, an operator is said to be unbounded order compact if it maps an arbitrary order bounded net to a net with uo-convergent subnet. After exposing the relationships between order compact, unbounded order compact, semicompact and GAM-compact operators; we study those operators mapping an arbitrary order bounded net to a net with a relatively uniformly convergent subnet. By using the nontopological concepts of order and unbounded order convergences, we derive new results related to these classes of operators.

Keywords

Compact operator, unbounded order convergence, vector lattice

First Page

634

Last Page

646

Recommended Citation

ÖZCAN, NAZİFE ERKURŞUN; GEZER, NİYAZİ ANIL; ÖZDEMİR, ŞAZİYE ECE; and GEYİKÇİ, İREM MESUDE (2021) "Order compact and unbounded order compact operators," Turkish Journal of Mathematics: Vol. 45: No. 2, Article 2. https://doi.org/10.3906/mat-2004-68
Available at: https://journals.tubitak.gov.tr/math/vol45/iss2/2