Cut approach to invariance groups of lattice-valued functions

Autor: Branimir źEšelja, Eszter K. Horváth, Andreja TepavăźEvić
Rok vydání: 2016
Předmět:
Zdroj: Soft Computing. 21:853-859
ISSN: 1433-7479
1432-7643
DOI: 10.1007/s00500-016-2084-3
Popis: This paper deals with lattice-valued n-variable functions on a k-element domain, considered as a generalization of lattice-valued Boolean functions. We investigate invariance groups of these functions, i.e., the group of such permutations that leaves the considered function invariant. We show that the invariance groups of lattice-valued functions depend only on the cuts of the function. Furthermore, we construct such lattice-valued Boolean function (and its generalization), the cuts of which represent all representable invariance groups.
Databáze: OpenAIRE