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Symmetric Consequence Relations and Strategy-Proof Judgment Aggregation

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  • Stefano Vannucci

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Abstract

It is shown that the posets of both substructural and classical symmetric consequence relations ordered by set-inclusion are (non-boolean) completely distributive complete lattices. Therefore, those two basic versions of symmetric consequence relations are amenable to anonymous neutral and idempotent strategy- proof aggregation by majority polynomial rules on single-peaked domains. In particular, the majority rule is characterized as the only aggregation rule for odd profiles of symmetric consequence relations that is anonymous, bi-idempotent and strategy-proof on arbitrary rich locally unimodal domains.

Suggested Citation

  • Stefano Vannucci, 2017. "Symmetric Consequence Relations and Strategy-Proof Judgment Aggregation," Department of Economics University of Siena 754, Department of Economics, University of Siena.
  • Handle: RePEc:usi:wpaper:754
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    File URL: http://repec.deps.unisi.it/quaderni/754.pdf
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    References listed on IDEAS

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    1. Franz Dietrich, 2007. "A generalised model of judgment aggregation," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 28(4), pages 529-565, June.
    2. Dietrich, Franz & List, Christian, 2007. "Strategy-Proof Judgment Aggregation," Economics and Philosophy, Cambridge University Press, vol. 23(03), pages 269-300, November.
    3. Vannucci, Stefano, 2016. "Weakly unimodal domains, anti-exchange properties, and coalitional strategy-proofness of aggregation rules," Mathematical Social Sciences, Elsevier, vol. 84(C), pages 56-67.
    4. Nehring, Klaus & Puppe, Clemens, 2007. "The structure of strategy-proof social choice -- Part I: General characterization and possibility results on median spaces," Journal of Economic Theory, Elsevier, vol. 135(1), pages 269-305, July.
    5. Monjardet, B., 1990. "Arrowian characterizations of latticial federation consensus functions," Mathematical Social Sciences, Elsevier, vol. 20(1), pages 51-71, August.
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    JEL classification:

    • D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations

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