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Organizational Refinements of Nash Equilibrium

Author

Listed:
  • Takashi Kamihigashi

    (Research Institute for Economics & Business Administration (RIEB), Kobe University, Japan)

  • Kerim Keskin

    (Department of Economic, Kadir Has University, Turkey)

  • Çağrı Sağlam

    (Department of Economics, Bilkent University, Turkey)

Abstract

Strong Nash equilibrium (see Aumann, 1959) and coalition-proof Nash equilibrium (see Bernheim et al., 1987) rely on the idea that players are allowed to form coalitions and make joint deviations. They both consider a case in which any coalition can be formed. Yet there are many real-life examples where the players cannot form certain types of coalitions/subcoalitions. There may also be instances, when all coalitions are formed, where conflicts of interest arise and prevent a player from choosing an action that simultaneously meets the requirements of the two coalitions to which he or she belongs. Here we address these criticisms by studying an organizational framework where some coalitions/subcoalitions are not formed and where the coalitional structure is formulated in such a way that no conflicts of interest remain. We define an organization as a collection of partitions of a set of players ordered in such a way that any partition is coarser than the partitions that precede it. For a given organization, we introduce the notion of organizational Nash equilibrium. We analyze the existence of equilibrium in a subclass of games with strategic complementarities and illustrate how the proposed notion refines the set of Nash equilibria in some examples of normal form games.

Suggested Citation

  • Takashi Kamihigashi & Kerim Keskin & Çağrı Sağlam, 2017. "Organizational Refinements of Nash Equilibrium," Discussion Paper Series DP2017-25, Research Institute for Economics & Business Administration, Kobe University.
    • Handle: RePEc:kob:dpaper:dp2017-25
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    File URL: https://www.rieb.kobe-u.ac.jp/academic/ra/dp/English/DP2017-25.pdf
    File Function: First version, 2017
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    References listed on IDEAS

    as
    1. Dutta, Bhaskar & Sen, Arunava, 1991. "Implementation under strong equilibrium : A complete characterization," Journal of Mathematical Economics, Elsevier, vol. 20(1), pages 49-67.
    2. Rabah Amir, 2005. "Supermodularity and Complementarity in Economics: An Elementary Survey," Southern Economic Journal, Southern Economic Association, vol. 71(3), pages 636-660, January.
    3. Zhou Lin, 1994. "The Set of Nash Equilibria of a Supermodular Game Is a Complete Lattice," Games and Economic Behavior, Elsevier, vol. 7(2), pages 295-300, September.
    4. Greenberg, Joseph, 1989. "Deriving strong and coalition-proof nash equilibria from an abstract system," Journal of Economic Theory, Elsevier, vol. 49(1), pages 195-202, October.
    5. CALCIANO, Filippo L., 2007. "Games with complementarities," LIDAM Discussion Papers CORE 2007016, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    6. Konishi, Hideo & Le Breton, Michel & Weber, Shlomo, 1999. "On Coalition-Proof Nash Equilibria in Common Agency Games," Journal of Economic Theory, Elsevier, vol. 85(1), pages 122-139, March.
    7. Oriol Carbonell-Nicolau & Richard McLean, 2015. "On equilibrium refinements in supermodular games," International Journal of Game Theory, Springer;Game Theory Society, vol. 44(4), pages 869-890, November.
    8. Federico Echenique, 2005. "A short and constructive proof of Tarski’s fixed-point theorem," International Journal of Game Theory, Springer;Game Theory Society, vol. 33(2), pages 215-218, June.
    9. Licun Xue, 2000. "Negotiation-proof Nash equilibrium," International Journal of Game Theory, Springer;Game Theory Society, vol. 29(3), pages 339-357.
    10. Milgrom, Paul & Shannon, Chris, 1994. "Monotone Comparative Statics," Econometrica, Econometric Society, vol. 62(1), pages 157-180, January.
    11. Konishi, Hideo & Le Breton, Michel & Weber, Shlomo, 1997. "Equilibria in a Model with Partial Rivalry," Journal of Economic Theory, Elsevier, vol. 72(1), pages 225-237, January.
    12. Milgrom, Paul & Roberts, John, 1996. "Coalition-Proofness and Correlation with Arbitrary Communication Possibilities," Games and Economic Behavior, Elsevier, vol. 17(1), pages 113-128, November.
    13. Bernheim, B. Douglas & Whinston, Michael D., 1987. "Coalition-Proof Nash Equilibria II. Applications," Journal of Economic Theory, Elsevier, vol. 42(1), pages 13-29, June.
    14. Karagözoğlu, Emin & Keskin, Kerim & Sağlam, Çağrı, 2013. "A minimally altruistic refinement of Nash equilibrium," Mathematical Social Sciences, Elsevier, vol. 66(3), pages 422-430.
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    More about this item

    Keywords

    Nash Equilibrium; Refinements; Coalitional Structure; Organizational Structure; Games with Strategic Complementarities;

    JEL classification:

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

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