The concept of Berge equilibria is based on supportive behavior among the players: each player is supported by the … equilibrium and we provide an example in which there is no Berge equilibrium, while the set of unilateral support equilibria is … non-empty. Finally, the relation between the set of unilateral support equilibria and the set of Nash equilibria is …

In this paper the structure of the set of equilibria for two person multicriteria games is analysed. It turns out that … the classical result for the set of equilibria for bimatrix games, that it is a finite union of polytopes, is only valid …