Optimal Strategies in n-Person Unilaterally Competitive Games

De Wolf, Olivier
(1999)

Files

cerec1999_4.pdf
  • Open Access
  • Adobe PDF
  • 202.37 KB

Details

Authors
  • De Wolf, OlivierUCLouvain
    Author
Abstract
In this paper, we prove that the concept of value traditionally defined in the class of two-person zero-sum games can be adequately generalized to the class of n-person weakly unilaterally competitive games introduced by Kats & Thisse [KT92b]. We subsequently establish that if there exists an equilibrium in a game belonging to the latter class, then every player possesses at least an optimal strategy (i.e., a strategy yielding at least the value to this player). Furthermore, we show that, in all unilaterally competitive games that have a Nash equilibrium profile, a strategy profile is an equilibrium if and only if it is an optimal profile. From these results, we deduce a very strong foundation to the Nash equilibrium concept in unilaterally competitive games.
Affiliations

Citations

De Wolf, O. (1999). Optimal Strategies in n-Person Unilaterally Competitive Games (CEREC Working Papers 1999/4).