Abstract The Fermatean Fuzzy Set (FFS) theory emerges as a crucial and prevalent tool in
addressing uncertainty across diverse domains. Despite its recognized utility in managing …

Interval-valued Fermatean fuzzy sets (IVFFSs) as an extension of Fermatean fuzzy sets
(FFSs) are a new powerful mathematical tool that apply interval value to describe …

The performance of fuzzy systems has been shown both theoretically and empirically to
improve with increasing fuzziness, eg, when fuzzy values are modelled using type 2 or …

Failure mode and effect analysis (FMEA) is a reliability analysis and risk management
technique used to analyze the potential causes of system failure modes and their impact on …

In many practical situations, the theory of q-rung orthopair fuzzy sets has proven to be a
more effective tool for handling high levels of uncertainty than intuitionistic, Pythagorean …

The n, m-rung orthopair fuzzy set theory has appeared as a fresh mathematical tool for
dealing with uncertainty in several fields of the real world. The n, m-rung orthopair fuzzy sets …

It is difficult to describe the hesitation and uncertainty of experts by single-valued
information, and the differences in the importance of attributes are often ignored during the …

When handling complex uncertainty information for multi-attribute decision-making (MADM)
problems, interval-valued Fermatean fuzzy sets (IVFFSs) are a novel and powerful tool with …

Considering the fuzzy and uncertainty of the evaluation information of the evaluation object,
the type of indicators are expanded into five types of mixed evaluation information, namely …

Interval-valued Fermatean fuzzy sets are a new powerful tool for dealing with uncertainty
problems. However, group decision-making methods under this new model are rarely …