Likened to the economic calamity of World War Two, the COVID-19 pandemic has sparked
fears of a deep economic crisis, killed more than six million people worldwide and had a …

Intuitionistic fuzzy sets are the most widely used fuzzy set extension in the literature. It is a
fuzzy set extension in which decision makers specify the degree of membership of the …

As an extension of several fuzzy structures such as fuzzy sets, intuitionistic fuzzy sets, picture
fuzzy sets, q-rung ortho-pair fuzzy sets, and T-spherical fuzzy (TSF) sets (TSFSs), are an …

Emergency supplies supplier selection can be regarded as a classic multiple attribute group
decision making (MAGDM) problem. MAGDM is an interesting everyday problem full of …

Traffic congestion and environmental pollution generated by transportation activities
significantly endanger the sustainable development of cities. This study presents a new …

The main objective of this study is to set up the foundations of a new model, namely,
complex spherical fuzzy (CSF) model that is highly proficient to express the two dimensional …

Abstract q-rung orthopair fuzzy sets (q-ROFSs) are advantageous for accurately expressing
the preferences of decision-makers (DMs) due to their membership and non-membership …

To evaluate objects under uncertainty, many fuzzy frameworks have been designed and
investigated so far. Among them, the frame of picture fuzzy set (PFS) is of considerable …

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

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 …