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Communication equilibrium payoffs in repeated games with imperfect monitoring

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  • Renault, Jérôme
  • Tomala, Tristan

Abstract

We characterize the set of communication equilibrium payoffs of any undiscounted repeated matrix-game with imperfect monitoring and complete information. For two-player games, a characterization is provided by Mertens, Sorin, and Zamir (Repeated games, Part A (1994) CORE DP 9420), mainly using Lehrer's (Math. Operations Res. (1992) 175) result for correlated equilibria. The main result of this paper is to extend this characterization to the n-player case. The proof of the characterization relies on an analogy with an auxiliary 2-player repeated game with incomplete information and imperfect monitoring. We use Kohlberg's (Int. J. Game Theory (1975) 7) result to construct explicitly a canonical communication device for each communication equilibrium payoff.

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Paper provided by Paris Dauphine University in its series Economics Papers from University Paris Dauphine with number 123456789/6103.

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Date of creation: 2004
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Publication status: Published in Games and Economic Behavior, 2004, Vol. 49, no. 2. pp. 313-344.Length: 31 pages
Handle: RePEc:dau:papers:123456789/6103

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Keywords: Repeated games; Imperfect monitoring; Communication equilibria;

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References

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  1. F. Forges, 2010. "An Approach to Communication Equilibrium," Levine's Working Paper Archive 516, David K. Levine.
  2. Myerson, Roger B., 1982. "Optimal coordination mechanisms in generalized principal-agent problems," Journal of Mathematical Economics, Elsevier, vol. 10(1), pages 67-81, June.
  3. Tomala, Tristan, 1999. "Nash Equilibria of Repeated Games with Observable Payoff Vectors," Games and Economic Behavior, Elsevier, vol. 28(2), pages 310-324, August.
  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. Jérôme Renault, 2001. "3-player repeated games with lack of information on one side," International Journal of Game Theory, Springer, vol. 30(2), pages 221-245.
  6. Lehrer, E, 1990. "Nash Equilibria of n-Player Repeated Games with Semi-standard Information," International Journal of Game Theory, Springer, vol. 19(2), pages 191-217.
  7. Lehrer, E, 1989. "Lower Equilibrium Payoffs in Two-Player Repeated Games with Non-observable Actions," International Journal of Game Theory, Springer, vol. 18(1), pages 57-89.
  8. Renault, J. & Tomala, T., 1997. "Repeated Proximity Games," Papiers d'Economie Mathématique et Applications 97.14, Université Panthéon-Sorbonne (Paris 1).
  9. Robert J. Aumann, 1995. "Repeated Games with Incomplete Information," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262011476, December.
  10. Renault, Jérôme, 2000. "On Two-Player Repeated Games with Lack of Information on One Side and State-Independent Signalling," Economics Papers from University Paris Dauphine 123456789/6109, Paris Dauphine University.
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Citations

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Cited by:
  1. Heller, Yuval & Solan, Eilon & Tomala, Tristan, 2012. "Communication, correlation and cheap-talk in games with public information," Games and Economic Behavior, Elsevier, vol. 74(1), pages 222-234.
  2. Nicolas Jacquemet & Frédéric Koessler, 2011. "Using or Hiding Private Information? An experimental Study of Zero-Sum Repeated Games with Incomplete Information," Documents de travail du Centre d'Economie de la Sorbonne 11002, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
  3. Gossner, Olivier & Tomala, Tristan, 2003. "Entropy and codification in repeated games with imperfect monitoring," Economics Papers from University Paris Dauphine 123456789/6885, Paris Dauphine University.
  4. Renault, Jerome & Scarlatti, Sergio & Scarsini, Marco, 2005. "A folk theorem for minority games," Games and Economic Behavior, Elsevier, vol. 53(2), pages 208-230, November.
  5. Contou-Carrère, Pauline & Tomala, Tristan, 2011. "Finitely repeated games with semi-standard monitoring," Journal of Mathematical Economics, Elsevier, vol. 47(1), pages 14-21, January.
  6. Renault, Jérôme & Scarlatti, Sergio & Scarsini, Marco, 2008. "Discounted and finitely repeated minority games with public signals," Mathematical Social Sciences, Elsevier, vol. 56(1), pages 44-74, July.
  7. Renault, Jérôme & Scarsini, Marco & Tomala, Tristan, 2007. "A minority game with bounded recall," Economics Papers from University Paris Dauphine 123456789/6381, Paris Dauphine University.
  8. Laclau, Marie, 2012. "A folk theorem for repeated games played on a network," Games and Economic Behavior, Elsevier, vol. 76(2), pages 711-737.
  9. Tomala, Tristan, 2009. "Perfect Communication Equilibria in Repeated Games with Imperfect Monitoring," Economics Papers from University Paris Dauphine 123456789/6102, Paris Dauphine University.
  10. Lovo, Stefano & Tomala, Tristan & Hörner, Johannes, 2009. "Belief-free equilibria in games with incomplete information: characterization and existence," Les Cahiers de Recherche 921, HEC Paris.
  11. Tomala, Tristan, 2009. "Perfect communication equilibria in repeated games with imperfect monitoring," Games and Economic Behavior, Elsevier, vol. 67(2), pages 682-694, November.

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