neither arbitrarily small coalitions nor large coalitions are enough to block an allocation which is not in the core, due to … the core provided by Vind and Schmeidler (1972) to economies with asymmetrically informed traders. We then focus on … information sharing rules based on the coalitions' size. Assuming the existence of coalitions to which the sharing rule associates …

is not necessary to consider the forma- tion of all coalitions in order to obtain the bargaining sets. This is shown …

social conventions by embedding a static bargaining setting in a dynamic process; Over time agents revise their coalitions … a logit specification of choice probabilities, we find that the stability of a core allocation decreases in the wealth … of the richest player, and that stochastically stable allocations are core allocations which minimize the wealth of the …

Twelve sets, proposed as social choice solution concepts, are compared: the core, five versions of the uncovered set …

question of core stability of the grand coalition, namely: is there a subset of bidders that prefers forming a small bidding … the grand coalition is not necessarily core stable, as opposed to the zero externality case, where the stability of the …

groups, such as marriages, or clubs, or productive coalitions. It may be that participants in an economy even derive utility …: (a) equivalence of the core and the set of competitive outcomes; (b) the Shapley value is contained in the core or … approximate cores; (c) the equal treatment property holds -- that is, both market equilibrium and the core treat similar players …

This paper proposes two generalization of the core and evaluates them on experimental data of assignment games (workers …-cooperative games, and they prove to be both descriptive and predictive in the assignment games analyzed here. The "logit core" allows …

For any transferable utility game in coalitional form with nonempty core, we show that that the number of blocks … required to switch from an imputation out of the core to an imputation in the core is less than or equal to n(n-1)/2, where n …