Abstract.
We consider the problem of implementing a social choice correspondence H in Nash equilibrium when the constitution of the society is given by an effectivity function E. It is assumed that the effectivity function of \( H,E^{H}\), is a sub-correspondence of E. We found necessary and efficient conditions for a game form \(\Gamma \) to implement H (in Nash equilibria), and to satisfy, at the same time, that \(E^{\Gamma}\), the effectivity function of \(\Gamma\), is a sub-correspondence of \(E^{H}\) (which guarantees that \(\Gamma\) is compatible with E). We also find sufficient conditions for the coincidence of the set of winning coalitions of \(E^{\Gamma}\) and \( E^{H}\), and for \(E^{\Gamma}=E^{H}\). All our results are sharp as is shown by suitable examples.
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Received: 15 December 2000 / Accepted: 3 September 2001
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Peleg, B., Winter, E. Constitutional implementation. Rev Econ Design 7, 187–204 (2002). https://doi.org/10.1007/s100580200074
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DOI: https://doi.org/10.1007/s100580200074