Rough semigroups on approximation spaces

Abstract

 Ozcan. This article is dis- tributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 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.