) do not necessarily ensure stability in the sense of the core of a cooperative game: some nations and groups of nations … compute allocations of permits satisfying core constraints at each commitment period, while being as close as possible to any …

core concept, called the two stage core, which is appropriate for analyzing asset market and differential information … economies, with sequential trade. The two stage core characterizes fully optimal allocations. vVe show that the two stage core … always exists under standard continuity and concavity assumptions. We derive the two stage core of an asset markets economy …

with respect to re-evaluations of coalitional power' (IRCP) allows to characterize the core as the largest solution … characterize the inner core for NTU games with convex and smooth feasible sets. …

This paper reinterprets by [gamma]-core (Chander and Tulkens (1995, 1997)) and justifies it as well as its prediction …

incentive compatibility constraints: the associated ex ante core is generically non-empty. However, we exhibit a wellbehaved … exchange economy in which this core is empty, even if goods are allocated through random mechanisms. …

This paper provides a general overview of the literature on the core of an exchange economy with asymetric information …. Incentive compatibility is emphasized in studying core concepts at the ex ante and the interim stage.The analysis includes … issues of non emptiness of the core as wellas core convergence to price equilibrium allocations. …

We show that in large finite economies, core allocations can be approximately decentralized as Nash (rather than Walras …) equilibrium. We argue that this excrcise is an essential complement to asymptotic core equivalence results, because it implies … precisely the interpretation of asymptotic core convergence, namely the emergence of price taking. …