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Asymptotically Strategy-Proof Walrasian Exchange

  • Jose M. Cordoba
  • Peter J. Hammond

February 1998 In smooth exchange economies with a continuum of agents, any Walrasian mechanism is Pareto efficient, individually rational, anonymous, and strategy-proof. Barberà and Jackson's (1995) results imply that no such efficient mechanism is the limit of resource-balanced, individually rational, anonymous and non-bossy strategy-proof allocation mechanisms for an expanding sequence of finite economies. For a broad class of smooth random exchange economies, relaxing anonymity and non-bossiness admits mechanisms which, as the economy becomes infinitely large, are asymptotically Walrasian for all except one ``balancing'' agent, while being manipulable with generically vanishing probability. Also considered are some extensions to non-Walrasian mechanisms. JEL classification: D82, D61, D5 Keywords: strategy-proofness, mechanism design, random economies, Walrasian equilibrium.

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Paper provided by Stanford University, Department of Economics in its series Working Papers with number 98005.

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Date of creation: Feb 1998
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Handle: RePEc:wop:stanec:98005
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