The fuzzy set theory, introduced by Lotfi A. Zadeh in 1965, had enclosed a lot of ground with
excellent achievements in almost all branches of science. It found many application areas in …

The notion of trigonometric similarity measure (SM) for spherical fuzzy sets (SFSs) has
become very important in solving various problems in pattern recognition and medical …

The objective of this paper is to introduce several dynamic spherical fuzzy aggregation
operators (AOs) for “multi-period decision-making”(MPDM) problems. In these problems …

Spherical fuzzy sets (SFSs), recently proposed by Ashraf, is one of the most important
concept to describe the fuzzy information in the process of decision making. In SFSs the sum …

Significant emergency measures should be taken until an emergency event occurs. It is
understood that the emergency is characterized by limited time and information, harmfulness …

The spherical fuzzy set (SFS), as a generalization of Picture fuzzy set, can express and
process uncertainty much better. In this article, we first reveal the comparison issues in …

Keeping in view the importance of new defined and well growing spherical fuzzy sets, in this
study, we proposed a novel method to handle the spherical fuzzy multi-criteria group …

In addition to the well-known fuzzy sets, a novel type of fuzzy set called spherical fuzzy set
(SFS) is recently introduced in the literature. SFS is the generalized structure over existing …

The control of spreading of COVID-19 in emergency situation the entire world is a challenge,
and therefore, the aim of this study was to propose a spherical intelligent fuzzy decision …

Spherical fuzzy sets (SFSs) have recently become more popular in various fields. It was
proposed as a generalization of picture fuzzy sets and Pythagorean fuzzy sets in order to …