Set theory is a mathematical abstract concerned with the grouping of sets of numbers that have commonality. For example, all even numbers make up a set, and all odd numbers comprise a set. All numbers ...

Researchers have built a formal possible-world semantics for rough set theory under incomplete information, deriving ...

This study introduces the fuzzy Revan index (FRI), a new comprehensive index of fuzzy graphs that can be used to facilitate multi-criteria decision-making under uncertainty. Unlike other fuzzy graph ...