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Title of Journal: Econ Theory

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Abbravation: Economic Theory

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Springer-Verlag

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10.1007/s10357-005-0899-2

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1432-0479

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Topsonly domains

Authors: Shurojit Chatterji Arunava Sen
Publish Date: 2009/12/06
Volume: 46, Issue: 2, Pages: 255-282
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Abstract

In this paper we consider the standard voting model with a finite set of alternatives A and n voters and address the following question what are the characteristics of domains mathcal D that induce the property that every strategyproof social choice function f mathcal Dn rightarrow A satisfying unanimity has the topsonly property We first impose a minimal richness condition which ensures that for every alternative a there exists an admissible ordering where a is maximal We identify conditions on mathcal D that are sufficient for strategyproofness and unanimity to imply tops onlyness in the general case of n voters and in the special case n = 2 We provide an algorithm for constructing topsonly domains from connected graphs with elements of A as nodes We provide several applications of our results Finally we relax the minimal richness assumption and partially extend our results

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  2. Weighted approval voting
  3. A note on values for Markovian coalition processes
  4. Fixed-prize tournaments versus first-price auctions in innovation contests
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  13. On the (non-)lattice structure of the equilibrium set in games with strategic substitutes
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  15. Passive learning: a critique by example
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  18. Ordinal dominance and risk aversion
  19. Asymmetric first-price auctions with uniform distributions: analytic solutions to the general case
  20. Using oriented volume to prove Sperner’s lemma
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  24. Noncooperative games, coupling constraints, and partial efficiency
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