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Article Dans Une Revue Journal of Mathematical Economics Année : 2011

Core-stable rings in second price auctions with common values

Résumé

In a common value auction in which the information partitions of the bidders are connected, all rings are core-stable. More precisely, the ex ante expected utilities of rings, at the (noncooperative) sophisticated equilibrium proposed by Einy et al. [Einy, E., Haimanko, O., Orzach, R., Sela, A., 2002. Dominance solvability of second-prices auctions with differential information. Journal of Mathematical Economics 37, 247-258], describe a cooperative games in characteristic function form, in spite of the underlying strategic externalities. A ring is core-stable if the core of this characteristic function is not empty. Furthermore, every ring can implement its sophisticated equilibrium strategy by means of an incentive compatible mechanism. An example shows that, if the bidders' information partitions are not connected, rings may no longer be core-stable

Dates et versions

hal-00659016 , version 1 (11-01-2012)

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Francoise Forges, Ram Orzach. Core-stable rings in second price auctions with common values. Journal of Mathematical Economics, 2011, 47 (6), pp.760-767. ⟨10.1016/j.jmateco.2011.10.006⟩. ⟨hal-00659016⟩
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