?? and int(V ) = ( ). In 1982 Hdeib , H. Z.[4] define the concept of [ - where a subset W of a space (?? ) is if and only if ? We denoted the collection of all in ?? by .O(??) also we denoted the collection of all subset of ?? by .C (??) and the union of all sets contained in A is called and denoted by ( ) . also the collection of all sets containing A is called of A and denoted by ( ) In 2007 Al-omari ,A .and Noorani, M.S.M.[1] used the set to define the concept of :- A topological space (?? ) is called if every is open in?? , M ,S .M[7] define the concept : (?? )
1) The
) The ???? ?? ????
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In 1977 Sharma .J.N [9] define the concept of T1-space: - A topological space (?? ) is a T1-space if and only if every singleton {k} of ?? is closed. In 2011 Kim ,Y .k ,Devi ,R .and Selvarakumar, [5] define the concept of ultra separated :- A set A is said to be ultra separated from B if open set G A G and G or A cl(B) = . of the basic