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Generic Determinacy and Money Non-Neutrality of International Monetary Equilibria

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  • Dimitrios P. Tsomocos

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Abstract

I address the issue of the 'number' of International Monetary Equilibria that the international finance model of Geanakoplos and Tsomocos (2002) possesses. The mainstream competitive model has locally unique equilibria with respect to the real side of the economy; however, it manifests nominal indeterminacy. Kareken and Wallace (1981) extend the O.L.G. indeterminacy result to a monetary model of the international economy. However, the role of monetary sector together with the market and agent heterogeneity remove real and nominal indeterminacy in the Geanakoplos and Tsomocos model. In particular, nominal indeterminacy abruptly disappears when private liquid wealth is non-zero. Finally, monetary policy becomes non-neutral since monetary changes affect nominal variables which in turn determine different real allocations. Lucas did not find these non-neutral effects in his model of international finance because he postulated a 'sell-all model' in which every agent sells everything he owns in every period. Thus, the number of transactions remain unaffected by definition regardless of any policy changes. Instead, when transactions emerge endogenously in equilibrium monetary policy has non-neutral effects provided that there exist potential gains to trade at the initial allocation of goods.

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Bibliographic Info

Paper provided by Oxford Financial Research Centre in its series OFRC Working Papers Series with number 2006fe07.

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Length: 39
Date of creation: 2006
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Handle: RePEc:sbs:wpsefe:2006fe07

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Web page: http://www.finance.ox.ac.uk
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Keywords: Determinacy; exchange rates; liquid wealth; non-neutrality; monetary policy;

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  1. Debreu, Gerard, 1970. "Economies with a Finite Set of Equilibria," Econometrica, Econometric Society, vol. 38(3), pages 387-92, May.
  2. Lucas, Robert E, Jr & Stokey, Nancy L, 1987. "Money and Interest in a Cash-in-Advance Economy," Econometrica, Econometric Society, vol. 55(3), pages 491-513, May.
  3. Dubey, Pradeep & Geanakoplos, John, 2003. "Monetary equilibrium with missing markets," Journal of Mathematical Economics, Elsevier, vol. 39(5-6), pages 585-618, July.
  4. Shapley, Lloyd S & Shubik, Martin, 1977. "Trade Using One Commodity as a Means of Payment," Journal of Political Economy, University of Chicago Press, vol. 85(5), pages 937-68, October.
  5. Pradeep Dubey & John Geanakoplos, 2003. "Monetary Equilibrium with Missing Markets," Cowles Foundation Discussion Papers 1389, Cowles Foundation for Research in Economics, Yale University.
  6. Lucas, Robert Jr., 1982. "Interest rates and currency prices in a two-country world," Journal of Monetary Economics, Elsevier, vol. 10(3), pages 335-359.
  7. Dimitrios P. Tsomocos & Martin Shubik, 2002. "A strategic market game with seigniorage costs of Fiat money," Economic Theory, Springer, vol. 19(1), pages 187-201.
  8. Geanakoplos, John & Mas-Colell, Andreu, 1989. "Real indeterminacy with financial assets," Journal of Economic Theory, Elsevier, vol. 47(1), pages 22-38, February.
  9. John Geanakoplos & Dimitri P. Tsomocos, 2001. "International Finance in General Equilibrium," Cowles Foundation Discussion Papers 1313, Cowles Foundation for Research in Economics, Yale University.
  10. Geanakoplos, J D & Polemarchakis, H M, 1986. "Walrasian Indeterminacy and Keynesian Macroeconomics," Review of Economic Studies, Wiley Blackwell, vol. 53(5), pages 755-79, October.
  11. Grandmont, Jean-Michel & Younes, Yves, 1972. "On the Role of Money and the Existence of a Monetary Equilibrium," Review of Economic Studies, Wiley Blackwell, vol. 39(3), pages 355-72, July.
  12. Lucas, Robert E., 1984. "Money in a theory of finance," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 21(1), pages 9-46, January.
  13. Lucas, Robert Jr., 1990. "Liquidity and interest rates," Journal of Economic Theory, Elsevier, vol. 50(2), pages 237-264, April.
  14. Grandmont, Jean-Michel & Laroque, Guy, 1975. "On Money and Banking," Review of Economic Studies, Wiley Blackwell, vol. 42(2), pages 207-36, April.
  15. Dornbusch, Rudiger, 1976. "Expectations and Exchange Rate Dynamics," Journal of Political Economy, University of Chicago Press, vol. 84(6), pages 1161-76, December.
  16. Kareken, John & Wallace, Neil, 1981. "On the Indeterminacy of Equilibrium Exchange Rates," The Quarterly Journal of Economics, MIT Press, vol. 96(2), pages 207-22, May.
  17. Gaetano Bloise & Herakles Polemarchakis, 2006. "Theory and practice of monetary policy," Economic Theory, Springer, vol. 27(1), pages 1-23, 01.
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Cited by:
  1. Raphaël Espinoza & Charles. Goodhart & Dimitrios Tsomocos, 2009. "State prices, liquidity, and default," Economic Theory, Springer, vol. 39(2), pages 177-194, May.
  2. repec:hal:cesptp:halshs-00505141 is not listed on IDEAS
  3. Charles A. E. Goodhart & Carolina Osorio & Dimitrios P. Tsomocos, 2009. "Analysis of Monetary Policy and Financial Stability: A New Paradigm," CESifo Working Paper Series 2885, CESifo Group Munich.
  4. Gaël Giraud & Dimitrios P. Tsomocos, 2010. "Nominal Uniqueness and Money Non-neutrality in the Limit-Price Exchange Process," Documents de travail du Centre d'Economie de la Sorbonne 10061, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.

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