Volume 24 • Number 2 • 2001   • Regularity and Normality via Ideals R.A. Mahmoud and A.A. Nasef Abstract. In this paper, the concepts of I-regular, I-normal and completely I-normal spaces have been presented utilizing the I- open notion. Moreover , -spaces, are also given. The similarities and dissimilarities between them and some other known corresponding types are discussed. Also, some of their characterizations and several of fundamental properties have been established. Full text: PDF