Abstract

The 3D extensions of ordinary fuzzy sets such as intuitionistic fuzzy sets (IFS), Pythagorean fuzzy sets (PFS), and neutrosophic sets (NS) aim to describe experts’ judgments more informatively and explicitly. Introduction of generalized three dimensional spherical fuzzy sets (SFS) including some essential differences from the other fuzzy sets is presented in the literature with their arithmetic, aggregation, and defuzzification operations [1]. This study summarizes the previously introduced spherical fuzzy sets and as an application spherical fuzzy TOPSIS method will be applied to the site selection of photovoltaic power station.

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