Soft Closed Sets on Soft Bitopological Space

Soft set theory was introduced by Molodtsov as a general mathematical tool for dealing with problems that contain uncertainity. In this paper, on soft bitopological space, we define soft closed sets; soft α-closed, soft semi-closed, soft pre-closed, regular soft closed, soft g-closed and soft sg-closed. We also give related properties of these soft sets and compared their properties with each other.