This book provides the readers with a thorough and systematic introduction to hesitant fuzzy theory. It presents the most recent research results and advanced m

Covering a wide range of notions concerning hesitant fuzzy set and its extensions, this book provides a comprehensive reference to the topic. In the case where

In the world of mathematics, the study of fuzzy relations and its theories are well-documented and a staple in the area of calculative methods. What many resear

In recent years, substantial efforts are being made in the development of reliability theory including fuzzy reliability theories and their applications to vari

1. The increasing number of research papers appeared in the last years that either make use of aggregation functions or contribute to its theoretieal study asse