Virtual Nash implementation with admissible support

Olivier Bochet () and Francois Maniquet

No 2006043, Discussion Papers (ECON - Département des Sciences Economiques) from Université catholique de Louvain, Département des Sciences Economiques

Abstract: A social choice correspondence (SCC) is virtually implementable if it is ε-close (in the probability simplex) to some (exactly) implementable correspondence. Abreu and Sen (1991) proved that, without restriction on the set of alternatives receiving strictly positive probability at equilibrium, every SCC is virtually implementable in Nash Equilibrium. We study virtual implementation when the supports of equilibrium lotteries are restricted. We provide a necessary and sufficient condition, imposing joint restrictions on SCCs and admissible supports. Then, we discuss how to construct supports. Finally, we study virtual implementation when the support is restricted to the efficient or individually rational alternatives.

Pages: 23
Date: 2006-08-01
New Economics Papers: this item is included in nep-gth
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Citations: View citations in EconPapers (1)

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Related works:
Journal Article: Virtual Nash implementation with admissible support (2010)
Working Paper: Virtual Nash implementation with admissible support (2010)
Working Paper: Virtual Nash implementation with admissible support (2006)
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