“…Throughout this paper Z means a topological space (Z,𝜏) without separation axioms, unless it is explicitly referenced. The nature of this work is to explore and extract a specific new genre, the generalized separation axioms have been constructed by several authors [1][2][3][4] . A pre-open was studied in 1982 by Mashhour, Abd El -Monsef and El-Deeb 5 , a subset 𝑀 is a pre-open set if 𝑀 ⊆ int(Cl(𝑀)), where the Cl(𝑀) and the int(𝑀) are the closure and the interior operators of a set 𝑀 respectively 6 .…”