Bagirmaz, NurettinTasbozan, Hatice2024-09-182024-09-1820190972-5555https://doi.org/10.17654/NT042010077https://hdl.handle.net/20.500.12483/12083Rough set theory proposes a new mathematical approach to model vagueness. In this paper, we introduce a new definition for rough approximations with respect to the subgroups of a group, which is called the left (right) lower and upper approximations. In fact, we prove that this definition is a generalization of definition in [5]. Then we give some properties of these rough approximations.eninfo:eu-repo/semantics/closedAccessrough setsrough groupsleft (right) lower approximationleft (right) upper approximationArticle421778310.17654/NT042010077WOS:000464544500007N/A