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Acyclicity of improvements in finite game forms

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  • Kukushkin, Nikolai S.

Abstract

Game forms are studied where the acyclicity, in a stronger or weaker sense, of (coalition or individual) improvements is ensured in all derivative games. In every game form generated by an ``ordered voting'' procedure, individual improvements converge to Nash equilibria if the players restrict themselves to ``minimal'' strategy changes. A complete description of game forms where all coalition improvement paths lead to strong equilibria is obtained: they are either dictatorial, or voting (or rather lobbing) about two outcomes. The restriction to minimal strategy changes ensures the convergence of coalition improvements to strong equilibria in every game form generated by a ``voting by veto'' procedure.

Suggested Citation

  • Kukushkin, Nikolai S., 2008. "Acyclicity of improvements in finite game forms," MPRA Paper 11802, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:11802
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    References listed on IDEAS

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    Cited by:

    1. Stéphane Le Roux & Arno Pauly, 2020. "A Semi-Potential for Finite and Infinite Games in Extensive Form," Dynamic Games and Applications, Springer, vol. 10(1), pages 120-144, March.
    2. Lihi Dery & Svetlana Obraztsova & Zinovi Rabinovich & Meir Kalech, 2019. "Lie on the Fly: Strategic Voting in an Iterative Preference Elicitation Process," Group Decision and Negotiation, Springer, vol. 28(6), pages 1077-1107, December.
    3. Novikova, Natalia M. & Pospelova, Irina I., 2017. "A lemma in open sequential voting by veto," Mathematical Social Sciences, Elsevier, vol. 90(C), pages 141-144.

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    More about this item

    Keywords

    Improvement dynamics; Game form; Perfect information game; Potential game; Voting by veto;
    All these keywords.

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games

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