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Elsevier, Economics Letters, 1(97), p. 70-73

DOI: 10.1016/j.econlet.2007.02.023

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Posterior Implementation versus Ex-Post Implementation

Journal article published in 2007 by Philippe Jehiel, Morita Meyer ter-Vehn, Moritz Meyer-Ter-Vehn, Benny Moldovanu, William R. Zame
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This paper is available in a repository.

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Abstract

Posterior implementation is a weaker concept than ex-post implementation. It requires that agents' strategies are optimal against others' strategies, given the precise information made available by the mechanism. Whereas ex-post implementation is generically impossible, we show by example that this need not be the case for posterior implementation.