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Nonuniqueness of solutions in applied general equilibrium models with scale economies and imperfect competition

  • Jean Mercenier

Applied general equilibrium models with imperfect competition and economies of scale have been extensively used for analyzing international trade and development policy issues. They offer a natural framework for testing the empirical relevance of propositions from the industrial organization and new trade theoretical literature. This paper warns model builders and users that considerable caution is needed in interpreting the results and deriving strong policy conclusions from these models: in this generation of applied general equilibrium models, nonuniqueness of equilibria is not a theoretical curiosum, but a potentially serious problem. Disregarding this may lead to dramatically wrong policy appraisals.

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Paper provided by Federal Reserve Bank of Minneapolis in its series Staff Report with number 183.

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Date of creation: 1994
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Handle: RePEc:fip:fedmsr:183
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  12. Robert GARY-BOBO, 1988. "Equilibre général et concurrence Imparfaite : un tour d’horizon," Discussion Papers (REL - Recherches Economiques de Louvain) 1988012, Université catholique de Louvain, Institut de Recherches Economiques et Sociales (IRES).
  13. Venables, Anthony J., 1984. "Multiple equilibria in the theory of international trade with monopolistically competitive commodities," Journal of International Economics, Elsevier, vol. 16(1-2), pages 103-121, February.
  14. Randall Wigle, 1988. "General Equilibrium Evaluation of Canada-U.S. Trade Liberalization in a Global Context," Canadian Journal of Economics, Canadian Economics Association, vol. 21(3), pages 539-64, August.
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  16. Timothy J. Kehoe, 1979. "An Index Theorem for General Equilibrium Models with Production," Cowles Foundation Discussion Papers 516, Cowles Foundation for Research in Economics, Yale University.
  17. Shantayanan Devarajan & Dani Rodrik, 1989. "Pro-Competitive Effects of Trade Reform: Results from a CGE Model of Cameroon," NBER Working Papers 3176, National Bureau of Economic Research, Inc.
  18. Brown, D.K. & Stern, R.M., 1988. "U.S.-Canada Bilateral Tariff Elimination: The Role Of Product Differentiation And Market Structure," Working Papers 227, Research Seminar in International Economics, University of Michigan.
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  20. Shoven, John B & Whalley, John, 1984. "Applied General-Equilibrium Models of Taxation and International Trade: An Introduction and Survey," Journal of Economic Literature, American Economic Association, vol. 22(3), pages 1007-51, September.
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  22. Smith, Alasdair & Venables, Anthony J, 1988. "Completing the Internal Market in the European Community: Some Industry Simulations," CEPR Discussion Papers 233, C.E.P.R. Discussion Papers.
  23. Maskin, Eric & Tirole, Jean, 1987. "A theory of dynamic oligopoly, III : Cournot competition," European Economic Review, Elsevier, vol. 31(4), pages 947-968, June.
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  25. Ethier, Wilfred J, 1982. "National and International Returns to Scale in the Modern Theory of International Trade," American Economic Review, American Economic Association, vol. 72(3), pages 389-405, June.
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  27. Markusen, James R & Wigle, Randall M, 1989. "Nash Equilibrium Tariffs for the United States and Canada: The Roles of Country Size, Scale Economies, and Capital Mobility," Journal of Political Economy, University of Chicago Press, vol. 97(2), pages 368-86, April.
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