Dominating sets in k-majority tournaments
Alon, N., Brightwell, G.
, Kierstead, H. A., Kostochka, A. V. & Winkler, P.
(2004).
Dominating sets in k-majority tournaments.
(CDAM research report series LSE-CDAM-2004-11).
Centre for Discrete and Applicable Mathematics, London School of Economics and Political Science.
, Kierstead, H. A., Kostochka, A. V. & Winkler, P.
(2004).
Dominating sets in k-majority tournaments.
(CDAM research report series LSE-CDAM-2004-11).
Centre for Discrete and Applicable Mathematics, London School of Economics and Political Science.
A k-majority tournament T on a finite vertex set V is defined by a set of 2k − 1 linear orderings of V , with u ! v if and only if u lies above v in at least k of the orders. Motivated in part by the phenomenon of “non-transitive dice”, we let F(k) be the maximum over all k-majority tournaments T of the size of a minimum dominating set of T. We show that F(k) exists for all k > 0, that F(2) = 3 and that in general C1k/ log k · F(k) · C2k log k for suitable positive constants C1 and C2.