Cartesian Product on Vague Bi-ideals and Vague Interior Ideals of a ?-Semiring
Abstract
In this paper, we introduce and study the concept of cartesian product of vague sets of a ?-semiring R and we characterize vague ?-semiring, left(resp. right) vague ideal, vague bi-ideal and vague interior ideals of R in terms of cartesian product of vague sets of R.