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Generic determinacy and money non-neutrality of international monetary equilibria

  • Tsomocos, Dimitrios P.

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 [Kareken, J., Wallace, N., 1981. On the Indeterminacy of Equilibrium Exchange Rates. Q. J. Econ. 96, 207-222] 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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Article provided by Elsevier in its journal Journal of Mathematical Economics.

Volume (Year): 44 (2008)
Issue (Month): 7-8 (July)
Pages: 866-887

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Handle: RePEc:eee:mateco:v:44:y:2008:i:7-8:p:866-887
Contact details of provider: Web page: http://www.elsevier.com/locate/jmateco

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  1. John Geanakoplos & Dimitri P. Tsomocos, 2001. "International Finance in General Equilibrium," Cowles Foundation Discussion Papers 1313, Cowles Foundation for Research in Economics, Yale University.
  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. GRANDMONT, Jean-Michel & LAROQUE, Guy, . "On money and banking," CORE Discussion Papers RP -215, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  4. John Geanakoplos & Andreu Mas-Colell, 1985. "Real Indeterminacy with Financial Assets," Cowles Foundation Discussion Papers 770R, Cowles Foundation for Research in Economics, Yale University, revised Oct 1985.
  5. 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.
  6. 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.
  7. Gaetano Bloise & Herakles Polemarchakis, 2006. "Theory and practice of monetary policy," Economic Theory, Springer, vol. 27(1), pages 1-23, 01.
  8. 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.
  9. Dornbusch, Rudiger, 1976. "Expectations and Exchange Rate Dynamics," Journal of Political Economy, University of Chicago Press, vol. 84(6), pages 1161-76, December.
  10. Pradeep Dubey & John Geanakoplos, 2003. "Monetary Equilibrium with Missing Markets," Cowles Foundation Discussion Papers 1389, Cowles Foundation for Research in Economics, Yale University.
  11. Lucas, Robert Jr., 1990. "Liquidity and interest rates," Journal of Economic Theory, Elsevier, vol. 50(2), pages 237-264, April.
  12. 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.
  13. Debreu, Gerard, 1970. "Economies with a Finite Set of Equilibria," Econometrica, Econometric Society, vol. 38(3), pages 387-92, May.
  14. 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.
  15. 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.
  16. 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.
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