The notion of intuitionistic fuzzy set has received a lot of attention
in the recent years, especially as a tool to deal with uncertainty.
This book aims to outline the main results in the area in concise
manner, to provide a useful summary of similar concepts and how
they relate to intuitionistic fuzzy sets, and to show that some of
the claimed “extensions” proposed by different authors are in fact
incorrect, redundant, etc.
It also highlights new venues for research and defines currently
open problems which could serve all interested researchers as a
roadmap in their investigations.