We extend Vind’s classical theorem on the measure of blocking coalitions valid in finite dimensional atomless economies … the general class of Aubin coalitions for which a suitable version of Grodal’s result (Grodal (1972)) is also formulated …. Our results wish to point out the relevance of cone conditions dealing with blocking coalitions of arbitrary measure or …

In an exchange economy with incomplete information, the signaling core is defined by the set of state …-contingent allocations to which no coalitions object under informational leakage through proposals by informed agents. An objection … underlying the signaling core is supported by a sequential equilibrium of an ultimatum bargaining game with an informed proposer …

An evolutionary style model of recontracting is given which guarantees convergence to core allocations of an underlying …

Core theory furnishes a useful framework for studying a wide variety of economic problems. It has an undeserved …, core theory is a highly flexible way of looking at practical economic problems, especially problems in industrial … organization. This paper seeks to show how simple numerical examples can illustrate the idea of the core and, in turn, how the core …

In this note, we state a zero-maximum principle for core allocations, a result which was foreseen by Luenberger (1995 …). We prove a generalization of the first-zero maximum theorem of Luenberger. Roughly said, an allocation is in the core if …

-cooperative bargaining in coalitions of finite size. Under essentially the same conditions of core equivalence, we show that the strategic … theory of the core. With respect to previous work, our positive implementation result applies to a substantially larger class …

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 …