A simple sufficient condition for strong implementation

Ville Korpela

Journal of Economic Theory, 2013, vol. 148, issue 5, 2183-2193

Abstract: In an important step forward Maskin [E. Maskin, Nash equilibrium and welfare optimality, Rev. Econ. Stud. 66 (1999) 23–38] showed that two properties – monotonicity and no veto power – are together sufficient for Nash implementation. In contrast to the vast literature that followed, this characterization has two major advantages: First, it is often easy to verify, and second, it has an elegant and simple interpretation. However, there does not exist a similar condition for social choice correspondences that are implementable in strong equilibrium. All existing characterizations are either hard to verify or apply only to comprehensive preference domains. In this paper we improve the situation by giving one such condition. Moreover, using well-known examples we show that this is a practical tool.

Keywords: Implementation; Matching rule; Sufficient condition; Strong equilibrium (search for similar items in EconPapers)
JEL-codes: C72 D78 (search for similar items in EconPapers)
Date: 2013
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:jetheo:v:148:y:2013:i:5:p:2183-2193

DOI: 10.1016/j.jet.2013.04.013

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