This paper studies the core of combined games, obtained by summing two coalitional games. It is shown that the set of … core of the combined game coincides with the sum of the cores of its components. On the other hand, for non-balanced games …, the binary relation associating two component games whose combination has an empty core is not transitive. However, we …

) coalitional equilibrium, describe a (cooperative) partition form game. A coalition is core-stable if the core of a suitable …We propose a semi-cooperative game theoretic approach to check whether a given coalition is stable in a Bayesian game … possible explanation for cartels' structures (not) observed in practice. -- auctions ; Bayesian game ; collusion ; core …

either core stability or strict core stability is under consideration, the existence problem of a stable coalition structure …We investigate the computational complexity of several decision problems in hedonic coalition formation games and … stable coalition structure and of an individually stable coalition structure turn out to be NP-complete in the strong sense. …

characterize the core as a function of the utility's parameter values and show that in all cases the corresponding cores are non …-empty. We further discuss the core stable outcomes in terms of their segregating versus integrating properties. -- Coalitions … ; Core ; Stability ; Status-seeking …