Mathematics – Rings and Algebras
Scientific paper
2010-03-10
Mathematics
Rings and Algebras
11 pages, material reorganized
Scientific paper
The aim of this paper is to classify order-preserving functions according to their arity gap. Noteworthy examples of order-preserving functions are so-called aggregation functions. We first explicitly classify the Lov\'asz extensions of pseudo-Boolean functions according to their arity gap. Then we consider the class of order-preserving functions between partially ordered sets, and establish a similar explicit classification for this function class.
Couceiro Miguel
Lehtonen Erkko
Waldhauser Tamás
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