Every finite distributive lattice is a set of stable matchings for a small stable marriage instance

Autor: Dan Gusfield, Paul Leather, Michael Saks, Robert W. Irving
Jazyk: angličtina
Předmět:
Zdroj: Journal of Combinatorial Theory, Series A. (2):304-309
ISSN: 0097-3165
DOI: 10.1016/0097-3165(87)90037-9
Popis: Blair (J. Combin. Theory Ser. A 37 (1984), 353–356) showed that every finite distributive lattice is the weak dominance relation for some instance of the stable marriage problem, but the only bound given on the size of the instance was 2k for a k element lattice. In this note we describe a method which, for any distributive lattice L of k elements, constructs an instance of size at most k2 − k + 4. Further, we note that if the smallest instance for lattice L has size 2n, then the construction in this paper has size at most n 4 4 .
Databáze: OpenAIRE