The concept of topological group is a simple combination of the concepts of abstract group and topological space. The purpose of this paper is to combine the concepts of topological space and rough groups; called topological rough groups on an approximation space.

No abstract

In this paper, we introduced the notion of rough semigroups, rough subsemigroups, rough ideals, rough bi-ideals and homomorphisms of rough semigroups in approximation spaces. Then we give some properties of these rough structures.

No abstract

No abstract