t-Lower level set and t-upper level set of an intuitionistic fuzzy set


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Deniz Ü.,

Notes on Intuitionistic Fuzzy Sets, cilt.28, sa.4, ss.375-380, 2022 (Hakemli Dergi)

Özet

In this paper we give the definitions of t-lower level set (Lt(A)) and t-upper level set (Ut(A)) of an Intuitionistic fuzzy set. [1] A t-lower level set is defined by giving a lower boundary on μA(x) + νA(x). A t-upper level set is defined by giving an upper boundary on μA(x) + νA(x). If A is an Intuitionistic fuzzy set of X, then Lt(A) and Ut(A) are subsets of X. In this paper we give some theorems by using t-lower level sets and t-upper level sets and prove them.