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Perfectly competitive bilateral exchange without discounting


  • Green, Edward J.
  • Zhou, Ruilin


In a random-matching economy of traders who maximize cumulative consumption (overtaking criterion), the stationary, Markov, Bayesian-perfect equilibrium is studied. At such equilibrium, two results hold: (1) perfect substitutability between current and future consumption implies a no-surplus condition; and (2) by the no-surplus condition, there is a nominal price at which all trades must occur. These results strengthen the seminal results of Ostroy (1973) regarding monetary bilateral exchange in two ways: the incentive compatibility of the equilibrium trading pattern is established and a less roundabout trading pattern enhances welfare by enabling consumption to occur more frequently.

Suggested Citation

  • Green, Edward J. & Zhou, Ruilin, 2010. "Perfectly competitive bilateral exchange without discounting," Journal of Monetary Economics, Elsevier, vol. 57(2), pages 121-131, March.
  • Handle: RePEc:eee:moneco:v:57:y:2010:i:2:p:121-131

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    References listed on IDEAS

    1. Green, Edward J. & Zhou, Ruilin, 1998. "A Rudimentary Random-Matching Model with Divisible Money and Prices," Journal of Economic Theory, Elsevier, vol. 81(2), pages 252-271, August.
    2. Edward J. Green & Ruilin Zhou, 2002. "Dynamic Monetary Equilibrium in a Random Matching Economy," Econometrica, Econometric Society, vol. 70(3), pages 929-969, May.
    3. Zhou, Ruilin, 1999. "Individual and Aggregate Real Balances in a Random-Matching Model," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 40(4), pages 1009-1038, November.
    4. Ostroy, Joseph M, 1973. "The Informational Efficiency of Monetary Exchange," American Economic Review, American Economic Association, vol. 63(4), pages 597-610, September.
    5. Ostroy, Joseph M & Zame, William R, 1994. "Nonatomic Economies and the Boundaries of Perfect Competition," Econometrica, Econometric Society, vol. 62(3), pages 593-633, May.
    6. Gale, Douglas M, 1986. "Bargaining and Competition Part I: Characterization," Econometrica, Econometric Society, vol. 54(4), pages 785-806, July.
    7. Philip J Reny & Motty Perry, 2006. "Toward a Strategic Foundation for Rational Expectations Equilibrium," Econometrica, Econometric Society, vol. 74(5), pages 1231-1269, September.
    8. Gale, Douglas M, 1986. "Bargaining and Competition Part II: Existence," Econometrica, Econometric Society, vol. 54(4), pages 807-818, July.
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    Cited by:

    1. Arnaud Z. Dragicevic, 2017. "Option Fund Market Dynamics for Threshold Public Goods," Dynamic Games and Applications, Springer, vol. 7(1), pages 21-33, March.


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