موضوعات الفصل والتراص في الفضاءات ثنائية التبولوجيا

Abstract

In this research  we presented new concepts in bitopological spaces where we defined the bitopological space  - regular, and  - normal. Then we defined a new separation axiom, which are  and studied their most important properties. We also presented a new type of compactness in bitopological spaces, according to the concept  of open set of the type Nα.