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The notion of intuitionistic fuzzy sets was introduced by Atanassov as a generalization of the notion of fuzzy sets. In this paper, we apply the concept of intuitionistic fuzzy sets to H v-rings. We introduce the notion of an intuitionistic fuzzy H v-ideal of an H v-ring and then some related properties are investigated. We state some characterizations of(More)
Keywords: Lattice Approximation space Rough set Ideal Filter Lower and upper approximations a b s t r a c t In this paper, we intend to study a connection between rough sets and lattice theory. We introduce the concepts of upper and lower rough ideals (filters) in a lattice. Then, we offer some of their properties with regard to prime ideals (filters), the(More)