HACETTEPE JOURNAL OF MATHEMATICS AND STATISTICS, cilt.41, ss.191-199, 2012 (SCI İndekslerine Giren Dergi)
In this paper, the concepts of is an element of-soft set and q-soft set are introduced and some interesting properties are investigated. Using the notion of generalized fuzzy bi-ideals in a semigroup, characterizations for an is an element of-soft set and a q-soft set to be bi-idealistic soft semigroups are established.