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Inside and outside fiat money, gains to trade, and IS-LM

Author

Listed:
  • Pradeep Dubey
  • John Geanakoplos

Abstract

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). At the other extreme, if the government surplus is too large, the economy enters a liquidity trap in which nominal GNP sinks and monetary policy is ineffectual. Copyright Springer-Verlag Berlin Heidelberg 2003

Suggested Citation

  • Pradeep Dubey & John Geanakoplos, 2003. "Inside and outside fiat money, gains to trade, and IS-LM," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 21(2), pages 347-397, March.
  • Handle: RePEc:spr:joecth:v:21:y:2003:i:2:p:347-397
    DOI: 10.1007/s00199-002-0296-5
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    Citations

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    Cited by:

    1. Gaël Giraud & Myrna Wooders, 2012. "On the Simultaneous Emergence of Money and the State," Documents de travail du Centre d'Economie de la Sorbonne 12094, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
    2. Bloise, Gaetano, 2006. "Money, gains to trade and impatience," Research in Economics, Elsevier, vol. 60(1), pages 22-34, March.
    3. Li Lin & Dimitrios P. Tsomocos & Alexandros P. Vardoulakis, 2016. "On default and uniqueness of monetary equilibria," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 62(1), pages 245-264, June.
    4. Bai, Jinhui H. & Schwarz, Ingolf, 2006. "Monetary equilibria in a cash-in-advance economy with incomplete financial markets," Journal of Mathematical Economics, Elsevier, vol. 42(4-5), pages 422-451, August.
    5. repec:hal:journl:halshs-00786075 is not listed on IDEAS
    6. Ngoc-Sang Pham, 2013. "Collateral monetary equilibrium with liquidity constraints in an infinite horizon economy," Documents de travail du Centre d'Economie de la Sorbonne 13055r, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne, revised Sep 2013.
    7. Dubey, Pradeep & Geanakoplos, John, 2003. "Monetary equilibrium with missing markets," Journal of Mathematical Economics, Elsevier, vol. 39(5-6), pages 585-618, July.
    8. Geanakoplos, John & Dubey, Pradeep, 2010. "Credit cards and inflation," Games and Economic Behavior, Elsevier, vol. 70(2), pages 325-353, November.
    9. Peiris, M. Udara & Tsomocos, Dimitrios P., 2015. "International monetary equilibrium with default," Journal of Mathematical Economics, Elsevier, vol. 56(C), pages 47-57.
    10. Faure, Salomon & Gersbach, Hans, 2016. "Money Creation, Monetary Policy, and Capital Regulation," CEPR Discussion Papers 11368, C.E.P.R. Discussion Papers.
    11. repec:hal:journl:halshs-00848057 is not listed on IDEAS
    12. Dror Goldberg, 2012. "The tax-foundation theory of fiat money," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 50(2), pages 489-497, June.
    13. Gael Giraud & Dimitrios Tsomocos, 2004. "Global Uniqueness and Money Non-neutrality in a Walrasian Dynamics without Rational Expectations," OFRC Working Papers Series 2004fe15, Oxford Financial Research Centre.
    14. Kokonas, Nikolaos, 2016. "Nominal rigidities equilibria in a non-Ricardian economy," Journal of Mathematical Economics, Elsevier, vol. 67(C), pages 108-119.
    15. Herakles Polemarchakis, 2015. "Markets and Efficiency," The Japanese Economic Review, Japanese Economic Association, vol. 66(2), pages 150-166, June.
    16. Starr, Ross M., 2002. "Monetary General Equilibrium with Transaction Costs," University of California at San Diego, Economics Working Paper Series qt5w31m72w, Department of Economics, UC San Diego.
    17. Starr, Ross M., 2002. "Monetary General Equilibrium With Transaction Costs," University of California at San Diego, Economics Working Paper Series qt9bd8861b, Department of Economics, UC San Diego.
    18. Tsvetomira Tsenova, 2014. "International monetary transmission with bank heterogeneity and default risk," Annals of Finance, Springer, vol. 10(2), pages 217-241, May.
    19. Magill, Michael & Quinzii, Martine, 2014. "Anchoring expectations of inflation," Journal of Mathematical Economics, Elsevier, vol. 50(C), pages 86-105.

    More about this item

    Keywords

    Keywords and Phrases: Central bank; Gains to trade; Inside money; IS-LM; Outside money.; JEL Classification Numbers: D50; E40; E50; E58.;

    JEL classification:

    • D50 - Microeconomics - - General Equilibrium and Disequilibrium - - - General
    • E40 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - General
    • E50 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - General

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