تصفح Qatar University Science Journal - [From 1981 TO 2007] حسب المؤلف "Nasef, A. A."

السجلات المعروضة 1 -- 3 من 3

    • A Class Of Functions Stronger Than M-Precontinuity, Preirresolute And A-Functions 

      Abdel Monsef, M. E.; MAHMOUD, R.A.; NASEF, A.A.; عبد المنصف, محمد عزت; محمود, د.أ.; ناصف, أ.أ.... more authors ( Qatar University , 1990 , Article)
      We propose a definition for a new class of functions that may be stronger than the previous types. Some of its characterizations, connections with known ones and the effect of them on some topological spaces are studied .

    • Functions Near Of Na-Continuity 

      Mahmoud, R. A. [رمصان عبد العاطي محمود]; Nasef, A. A.; El-Monsef, M. E. Abd ( Qatar University , 1989 , Article)
      In 1986, the concept of Na-continuity was initiated by Chae et al., this leads us to introduce two classes of functions, namely strongly Na-continuity and weakly Na-continuity. We characterize these new types. Several ...

    • S — Compactness Via Ideals 

      Abdel Monsef, M. E.; Lashien, E. F.; Nasef, A. A.; عبد المنصف, محمد عزت; لاشين; ناصف... more authors ( Qatar University , 1991 , Article)
      Compactness modulo as an ideal has not been widely studied. Many new sorts of weak compactness have been introduced to topological spaces in the last twenty years but have not been studied using ideals. So, the main aim ...