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Rationalized subjective equilibria in repeated games

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  • Oishi Hidetsugu

Abstract

The purpose of this paper is to provide a new equilibrium concept of repeated games that involve incomplete information (rationalized subjective equilibrium) and a related framework (subjective game), and to analyse the relationships between players’ subjective images of games and the realized outcomes. We demonstrate the relationships among rationalized subjective equilibria, subjective equilibria, and original Nash equilibria by providing several examples. We also present several theorems analogous to the ordinary folk theorem and a simple application using the Cournot duopoly model. JEL Classification: C70, C72 Equilibres subjectifs rationalisés dans des jeux répétés L’objectif de cet article est de proposer un nouveau concept d’équilibre dans les jeux répétés où l’information est incomplète (équilibre subjectif rationalisé) et un cadre d’analyse approprié( jeu subjectif ), ainsi que d’analyser les rapports entre les images subjectives que les acteurs ont des jeux et de leurs résultats. On montre les rapports entre équilibres subjectifs rationalisés, équilibres subjectifs, et équilibres à la Nash à l’aide de divers exemples. On présente aussi plusieurs théorèmes analogues au « ordinary folk theorem » et une application simple utilisant le modèle de duopole de Cournot.

Suggested Citation

  • Oishi Hidetsugu, 2003. "Rationalized subjective equilibria in repeated games," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 36(1), pages 168-191, March.
    • Handle: RePEc:wly:canjec:v:36:y:2003:i:1:p:168-191
    DOI: 10.1111/1540-5982.00009
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    References listed on IDEAS

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    4. Sorin, Sylvain, 1992. "Repeated games with complete information," Handbook of Game Theory with Economic Applications, in: R.J. Aumann & S. Hart (ed.), Handbook of Game Theory with Economic Applications, edition 1, volume 1, chapter 4, pages 71-107, Elsevier.
    5. Kalai, Ehud & Lehrer, Ehud, 1993. "Subjective Equilibrium in Repeated Games," Econometrica, Econometric Society, vol. 61(5), pages 1231-1240, September.
    6. Abreu, Dilip, 1986. "Extremal equilibria of oligopolistic supergames," Journal of Economic Theory, Elsevier, vol. 39(1), pages 191-225, June.
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    More about this item

    JEL classification:

    • C70 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - General
    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games

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