TY - JOUR AU - Heyam H. Al-jarrah AU - Amani Al-rawshdeh AU - Eman M. Al-saleh AU - Khalid Y. Al-zoubi TI - Characterization of $R\omega O(X)$ sets by using ${\delta{\omega}}-$cluster points JO - Novi Sad Journal of Mathematics PY - 2019 SP - 109 EP - 122 VL - 49 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.30755/NSJOM.08786/ DO - 10.30755/NSJOM.08786 ID - 10.30755/NSJOM.08786 ER -