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Inside and Outside Money, Gains to Trade, and IS-LM

  • P. Dubey

    ()

  • J. Geanakoplos

We build a one-period general equilibrium model with money. Equilibrium exists, and fiat money has positive value, as long as the ratio of outside money to inside money is less than the gains to trade available at autarky. We show that the nominal effects of government fiscal and monetary policy can be completely described by a diagram identical in form to the IS-LM curves introduced by Hicks to describe Keynes' general theory. IS-LM analysis is thus not incompatible with full market clearing, multiple commodities, and heterogeneous households. We show that as the government deficit approaches a finite threshold, hyperinflation sets in (prices converge to infinity and real trade collapses). If the government surplus is too large, the economy enters a liquidity trap in which nominal GNP sinks and monetary policy is ineffectual.

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File URL: http://www.stonybrook.edu/commcms/economics/research/papers/2001/01-08.pdf
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Paper provided by Stony Brook University, Department of Economics in its series Department of Economics Working Papers with number 01-08.

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Length: 55 pages
Date of creation: 2001
Date of revision:
Handle: RePEc:nys:sunysb:01-08
Contact details of provider: Postal: Stony Brook, NY 11794-4384
Phone: (631)632-7540
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Web page: http://www.stonybrook.edu/commcms/economics/
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  1. David K. Levine, 1989. "Efficiency and the Value of Money," Levine's Working Paper Archive 2161, David K. Levine.
  2. Lucas, Robert Jr., 1990. "Liquidity and interest rates," Journal of Economic Theory, Elsevier, vol. 50(2), pages 237-264, April.
  3. Geanakoplos, John & Mas-Colell, Andreu, 1989. "Real indeterminacy with financial assets," Journal of Economic Theory, Elsevier, vol. 47(1), pages 22-38, February.
  4. Dubey, Pradeep & Shapley, Lloyd S., 1994. "Noncooperative general exchange with a continuum of traders: Two models," Journal of Mathematical Economics, Elsevier, vol. 23(3), pages 253-293, May.
  5. 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.
  6. Lucas, Robert E, Jr, 1980. "Equilibrium in a Pure Currency Economy," Economic Inquiry, Western Economic Association International, vol. 18(2), pages 203-20, April.
  7. GRANDMONT, Jean-Michel & YOUNES, Yves, . "On the efficiency of a monetary equilibrium," CORE Discussion Papers RP -135, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  8. Bewley, Truman, 1983. "A Difficulty with the Optimum Quantity of Money," Econometrica, Econometric Society, vol. 51(5), pages 1485-504, September.
  9. Magill,Michael & Quinzii,Martine, 1989. "Real effects of money in general equilibrium," Discussion Paper Serie A 232, University of Bonn, Germany.
  10. Hool, Bryce, 1976. "Money, Expectations and the Existence of a Temporary Equilibrium," Review of Economic Studies, Wiley Blackwell, vol. 43(3), pages 439-45, October.
  11. Balasko, Yves & Cass, David, 1989. "The Structure of Financial Equilibrium with Exogenous Yields: The Case of Incomplete Markets," Econometrica, Econometric Society, vol. 57(1), pages 135-62, January.
  12. Ioannis Karatzas & Martin Shubik & William D. Sudderth, 1992. "Construction of Stationary Markov Equilibria in a Strategic Market Game," Cowles Foundation Discussion Papers 1033, Cowles Foundation for Research in Economics, Yale University.
  13. Heller, Walter Perrin, 1974. "The holding of money balances in general equilibrium," Journal of Economic Theory, Elsevier, vol. 7(1), pages 93-108, January.
  14. Paul A. Samuelson, 1958. "An Exact Consumption-Loan Model of Interest with or without the Social Contrivance of Money," Journal of Political Economy, University of Chicago Press, vol. 66, pages 467.
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