FUZZIFICATIONS OF-CLOSED SETS IN LATTICE IMPLICATION ALGEBRAS
The fuzziﬁcation of ⊕-closed set is considered, and its basic properties are investigated. A relation between fuzzy ⊕-closed sets and fuzzy subalgebras/ﬁlters is given. Characterizations of fuzzy ⊕-closed set are established. Using a collection of⊕-closed set with additional conditions, a fuzzy ⊕-closed set is stated. The theory of fuzzy topological ⊕-closed sets is discussed.