Affiliations: [a]
Department of Mathematics, Abdul Wali Khan University, Mardan, Pakistan
| [b]
Department of Mathematics, King Khalid University, Abha, Saudi Arabia
| [c]
Department of Mathematics, King Abdulaziz University, Jeddah, Saudi Arabia
Correspondence:
[*]
Corresponding author. Saleem Abdullah, Department of Mathematics, Abdul Wali Khan University, Mardan 23200, Pakistan. E-mail: [email protected].
Abstract: In this paper, we introduce spherical fuzzy sets (SFSs) which is an advanced tool of the fuzzy sets, intuitionistic fuzzy sets and picture fuzzy sets. We investigate the basic properties of SFSs and compare the idea SFSs with picture fuzzy sets. The spaces of spherical membership grades and picture membership grades are examined by graphically. Some useful operation such as spherical fuzzy t’-norms and spherical fuzzy t’-conorms are introduced. Also introduced spherical fuzzy negator and some classifications of spherical fuzzy t’-norms and spherical fuzzy t′-conorms which are useful for development the aggregation operator to aggregate the spherical fuzzy information. Finally, a food circulation center evaluation problem is given as a practical application to demonstrate the usage and applicability of the proposed ranking approach.
