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The robustness of robust implementation

  • Meyer-ter-Vehn, Moritz
  • Morris, Stephen

We show that a mechanism that robustly implements optimal outcomes in a one-dimensional supermodular environment continues to robustly implement ε-optimal outcomes in all close-by environments. Robust implementation of ε-optimal outcomes is thus robust to small perturbations of the environment. This is in contrast to ex-post implementation which is not robust in this sense as only trivial social choice functions are ex-post implementable in generic environments.

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Article provided by Elsevier in its journal Journal of Economic Theory.

Volume (Year): 146 (2011)
Issue (Month): 5 (September)
Pages: 2093-2104

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Handle: RePEc:eee:jetheo:v:146:y:2011:i:5:p:2093-2104
Contact details of provider: Web page: http://www.elsevier.com/locate/inca/622869

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