Practical applications of IndetermSoft Set and IndetermHyperSoft Set and Introduction to TreeSoft Set as an extension to MultiSoft Set

Abstract

The IndetermSoft Set is kind of an extension of the Soft Set, because the data, or the function, or the sets involved in the Soft Set definition have indeterminacy, as in our daily life, and we still need to deal with such situations. Similarly, the IndetermHyperSoft Set is an extension of the HyperSoft Set, when there are indeterminate data, or indeterminate functions, or indeterminate sets. Here, 'Indeterm' means 'Indetermi-nate' (uncertain, conflicting, incomplete, non-unique result). The TreeSoft Set is now presented for the first time as an extension of the MultiSoft Set. Several applications are presented for each type of Soft Set.