On Soft Preopen Sets and Soft Pre Separation Axioms

Arockiarani and Lancy ,defined soft pre-open (closed) sets on soft topology. In this paper,we are continue investigating the properties of soft pre-open (closed) sets and define soft preclosure and soft preinterior in soft topological spaces. We are also introduce and research basic properties of the concepts of soft pre-regular spaces,soft P3-spaces,soft pre-normal spaces and soft P4-spaces in soft topological spaces,which are basic for further research on soft topology and will fortify the footing of the theory of soft topological space.