This contribution deals with introducing the innovative concept of extended fuzzy set (E-FS),
in which the S-norm function of membership and non-membership grades is less than or …

Many decision-making problems in real-life scenarios depend on how to deal with
uncertainty, which is typically a big challenge for decision-makers. Mathematical models are …

A p-rung orthopair fuzzy set (p-ROFS) describes a generalization of intuitionistic fuzzy set
and Pythagorean fuzzy set in the case where we face a larger representation space of …

A q-rung orthopair fuzzy set is one of the effective generalizations of fuzzy set for dealing
with uncertainties in information. Under this environment, in this study, we define a new type …

Many attempts have been made to generalize the concept of intuitionistic fuzzy sets (IFS)
like Pythagorean (PFS), q-rung orthopair (q-OFS), and linear Diophantine (LDFS). However …

Intuitionistic fuzzy sets (IFS) have been very popular in the literature after they were
introduced by Atanassov (1986). Several extensions of IFS have been proposed such as …

The prevailing concepts of intuitionistic fuzzy sets (IFSs), Pythagorean fuzzy sets (PFSs) and
q-rung orthopair fuzzy sets (q-ROFSs) have numerous applications in various fields from …

A generalized orthopair fuzzy set (GOFS), also known as aq-rung orthopair fuzzy set (q-
ROFS), is a higher variant of ordinary fuzzy sets by relaxing restrictions on the degrees of …

The concept of complex fuzzy set (CFS) and complex intuitionistic fuzzy set (CIFS) is two
recent developments in the field of fuzzy set theory. The significance of these concepts lies …

Orthopair fuzzy sets are fuzzy sets in which every element is represented by a pair of values
in the unit interval, one of which refers to membership and the other refers to non …