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

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 …

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 …

For any transferable utility game in coalitional form with a 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 at most n-1, where n is the number of … players. This bound exploits the geometry of the core and is optimal. It considerably improves the upper bounds found so far …

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 …

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

assumption that forming coalitions can exploit a ”first mover advantage”. We derive a characteristic function and show that when … outside players play their best response noncooperatively, the core is nonempty in games with strategic complements. We apply …

This note provides simple proofs of the equivalence among the core, equilibrium and limited arbitrage in markets with …