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 …

also shown that when an economy contains only negligible agents a Vind's type theorem on the private core with the exact …

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 …

information. One of them is the core and the other is known as coalitional fairness. The set of agents is modelled by a mixed … same agent can have common, private or pooled information when she becomes member of different coalitions. It is shown that … of small agents. We also focus on the information mechanism based on size of coalitions introduced in [18] and obtain a …

direct assumption that preferences have maximal elements on a fixed agenda. We show that the core of a simple game is … number of the game. The same is true if we replace the core by the core without majority dissatisfaction, obtained by … deleting from the agenda all the alternatives that are non-maximal for all players in a winning coalition. Unlike the core, 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 …