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Money, Intermediaries and Cash-in-Advance Constraints

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  • Christian Hellwig

    (London School of Economics)

Abstract

I study a search economy in which intermediaries are the driving force co-ordinating the economy on the use of a unique, common medium of exchange for transactions. If search frictions delay trade, intermediaries offering immediate exchange opportunities can make arbitrage gains from a price spread. As these intermediaries take over transactions, they are confronted to the double coincidence problem of the search market. In the model presented here, intermediaries solve this problem best by imposing a common medium of exchange to other agents, such that a Cash-in-Advance constraint results: Agents trade twice in order to consume, once to exchange their production against the medium of exchange, and once to receive their consumption good. To select between multiple equilibria, I introduce a criterion of minimal coalition proofness, whereby arbitrarily small coalitions may induce a change from one equilibrium to another. I show that any minimally coalition-proof equilibrium is Pareto-efficient, and characterize the full set of minimally coalition-proof equilibria of this economy.

Suggested Citation

  • Christian Hellwig, 2000. "Money, Intermediaries and Cash-in-Advance Constraints," Econometric Society World Congress 2000 Contributed Papers 1631, Econometric Society.
  • Handle: RePEc:ecm:wc2000:1631
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    References listed on IDEAS

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    1. Peter Howitt, 2005. "Beyond Search: Fiat Money In Organized Exchange," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 46(2), pages 405-429, May.
    2. Hellwig, Martin F., 1993. "The challenge of monetary theory," European Economic Review, Elsevier, vol. 37(2-3), pages 215-242, April.
    3. Gehrig, Thomas, 1993. "Intermediation in Search Markets," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 2(1), pages 97-120, Spring.
    4. Kiyotaki, Nobuhiro & Wright, Randall, 1989. "On Money as a Medium of Exchange," Journal of Political Economy, University of Chicago Press, vol. 97(4), pages 927-954, August.
    5. S. Rao Aiyagari & Neil Wallace, 1991. "Existence of Steady States with Positive Consumption in the Kiyotaki-Wright Model," Review of Economic Studies, Oxford University Press, vol. 58(5), pages 901-916.
    6. Howitt, Peter & Clower, Robert, 2000. "The emergence of economic organization," Journal of Economic Behavior & Organization, Elsevier, vol. 41(1), pages 55-84, January.
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    Cited by:

    1. Starr, Ross M., 2001. "Why Is There Money? Endogenous Derivation of "Money" as the Most Liquid Asset: A Class of Examples," University of California at San Diego, Economics Working Paper Series qt2rt3k4r7, Department of Economics, UC San Diego.
    2. de Haan, Leo & van den End, Jan Willem, 2018. "The signalling content of asset prices for inflation: Implications for quantitative easing," Economic Systems, Elsevier, vol. 42(1), pages 45-63.
    3. Christian Hellwig, 2002. "Money, Intermediaries, and Cash-in-Advance Constraints (February 2003)," UCLA Economics Online Papers 207, UCLA Department of Economics.
    4. Starr, Ross M., 2003. "Monetary general equilibrium with transaction costs," Journal of Mathematical Economics, Elsevier, vol. 39(3-4), pages 335-354, June.
    5. Starr, Ross M., 2000. "Why is there Money? Endogenous Derivation of "Money" as the Most Liquid Asset: A Class of Examples," University of California at San Diego, Economics Working Paper Series qt9bm927sh, Department of Economics, UC San Diego.
    6. Blume, Lawrence E. & Easley, David & Kleinberg, Jon & Tardos, √Čva, 2009. "Trading networks with price-setting agents," Games and Economic Behavior, Elsevier, vol. 67(1), pages 36-50, September.
    7. Ross M. Starr, 2012. "Why is there Money?," Books, Edward Elgar Publishing, number 13763, April.
    8. Starr, Ross M., 2002. "Existence of Uniqueness of "Money" in General Equilibrium: Natural Monopoly in the Most Liquid Asset," University of California at San Diego, Economics Working Paper Series qt660465rm, Department of Economics, UC San Diego.

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