%0 Journal Article %A Heyam H. Al-jarrah %A Amani Al-rawshdeh %A Eman M. Al-saleh %A Khalid Y. Al-zoubi %T Characterization of $R\omega O(X)$ sets by using ${\delta{\omega}}-$cluster points %J Novi Sad Journal of Mathematics %D 2019 %P 109 - 122 %V 49 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.30755/NSJOM.08786/ %R 10.30755/NSJOM.08786 %F 10.30755/NSJOM.08786