over consumption goods, competitive equilibrium allocations exist and belong to the (ex ante incentive) core. Furthermore …, any competitive equilibrium allocation can be viewed as an element of the core of the n-fold replicated economy, for every …

' private information, and the incentive compatible core, in which coalitions of agents are restricted to incentive compatible …. Two core concepts are investigated: the private core, in which agents' net trades are measurable with respect to agents …

, the set of fuzzy coalitions can be enlarged in order to obtain that every allocation of the core accordingly defined is …-dimensional. It is first showed that the fuzzy core allocations, a concept that goes back to J.-P. Aubin, are in a one …-to-one correspondence with certain core allocations of a continuum economy suitably defined. This result is obtained under convexity of …

We focus on the private core [19] of an economy with a finite number of agents with differential information, a … continuum of states and an infinite number of commodities. We state a nonemptiness result for the private core and provide a …

main result, we show that the private core and the private Shapley value of an economy with differential information are …

Function, given individual rationality and feasibility constraints. We prove that solutions belong to the core for a large …

communication plans and establish the existence of core strategies for this cooperative game under various regularity conditions. …

We analyze a model of coalitional bidding in which coalitions form endogenously and compete with each other. Since the … nature of this competition influences the way in which agents organize themselves into coalitions, our main aim is to … allowed to form coalitions to pool their finances before engaging in the first price auction. We show that if the budget …

This paper examines the ex ante core of a pure exchange economy with asymmetric information in which state … core with nontransferable utility is empty; the game fails to be balanced because convex combinations of incentive … resulting cooperative games are balanced. In this framework, an incentive compatible core concept is defined for NTU games …