encompasses many economic models with externalities and outside options. We show that when outside options are pure (i … distribution of coalitional gains and the dynamics of coalition formation are characterized in four illustrative applications. …

We study the implementation of social choice rules in environments with externalities. We prove the impossibility of …

This paper studies coalition formation among individuals who differ in productivity. The output of a coalition is … determined by the sum of productivities if the coalition exceeds a minimal threshold of members. We consider competitive … societies in which the surplus of a coalition is split according to productivity and egalitarian societies in which coalitions …

potential partners but also over what other matches occur. Once such externalities are considered, the set of stable matchings …

the efficient coalition structure is stable in terms of the coalition formation theory. It is assumed that coalitions can … coalitions) and a coalition may deviate if and only if it stands to gain from it. It is then shown that subsequent to a deviation … by a coalition, the nonmembers will have incentives to break apart into singletons, as is assumed in the definition of …