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Uniqueness of Cournot Equilibrium: New Results from Old Methods

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Gaudet, Gerard
Salant, Stephen W

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Abstract

This paper provides sufficient conditions for the existence of a unique Cournot equilibrium. Previous uniqueness results have depended on an assumption of nondegeneracy of equilibrium. As the authors illustrate, this assumption often fails in multistage games with proper Cournot subgames. Since their uniqueness results do not depend on this assumption, they are more widely applicable. Copyright 1991 by The Review of Economic Studies Limited.

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Publisher Info
Article provided by Blackwell Publishing in its journal Review of Economic Studies.

Volume (Year): 58 (1991)
Issue (Month): 2 (April)
Pages: 399-404
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Handle: RePEc:bla:restud:v:58:y:1991:i:2:p:399-404

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  1. Joan Canton & Antoine Soubeyran & Hubert Stahn, 2008. "Environmental Taxation and Vertical Cournot Oligopolies: How Eco-industries Matter," Environmental & Resource Economics, European Association of Environmental and Resource Economists, vol. 40(3), pages 369-382, July. [Downloadable!] (restricted)
  2. Juan Pablo Montero, 2002. "Market Structure and Environmental Innovation," Documentos de Trabajo 215, Instituto de Economía. Pontificia Universidad Católica de Chile.. [Downloadable!]
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  3. Ngo Van Long & Antoine Soubeyran, 1998. "Pollution, Pigouvian Taxes, and Asymmetric International Oligopoly," CIRANO Working Papers 98s-30, CIRANO. [Downloadable!]
  4. Ngo Van Long & Antoine Soubeyran, 1999. "Existence and Uniqueness of Cournot Equilibrium: A Contraction Mapping Approach," CIRANO Working Papers 99s-22, CIRANO. [Downloadable!]
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  5. Pierre Fleckinger, 2007. "Collective Reputation and Market Structure: Regulating the Quality vs Quantity Trade-of," Working Papers hal-00243080_v1, HAL. [Downloadable!]
  6. Ngo Van Long & Antoine Soubeyran, 1999. "Cost Manipulation Games in Oligopoly, with Costs of Manipulating," CIRANO Working Papers 99s-13, CIRANO. [Downloadable!]
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  7. Andrew F. Daughety, 2006. "Cournot Competition," Working Papers 0620, Department of Economics, Vanderbilt University. [Downloadable!]
  8. Ngo Van Long & Antoine Soubeyran, 2003. "Favoritism in Vertical Relationship: Input Prices and Access Quality," CIRANO Working Papers 2003s-14, CIRANO. [Downloadable!]
  9. Maria Eugenia, SANIN & Skerdilajda, ZANAJ, 2007. "Environmental innovation under Cournot competition," Discussion Papers (ECON - Département des Sciences Economiques) 2007031, Université catholique de Louvain, Département des Sciences Economiques. [Downloadable!]
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  10. Ngo Van Long & Antoine Soubeyran, 2001. "Emission Taxes and Standards for an Asymmetric Oligopoly," CIRANO Working Papers 2001s-07, CIRANO. [Downloadable!]
  11. Ngo Van Long & Antoine Soubeyran, 1999. "Input Price Discrimination, Access Pricing, and Bypass," CIRANO Working Papers 99s-23, CIRANO. [Downloadable!]
  12. Eric Rasmusen, 1996. "Bertrand Competition Under Uncertainty," Industrial Organization 9607002, EconWPA. [Downloadable!]
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  13. Eftichios Sartzetakis, 2004. "On the Efficiency of Competitive Markets for Emission Permits," Environmental & Resource Economics, European Association of Environmental and Resource Economists, vol. 27(1), pages 1-19, January. [Downloadable!] (restricted)
  14. Ngo Van Long & Antoine Soubeyran, 1998. "Collusive Allocation of Tradeable Pollution Permits," CIRANO Working Papers 98s-31, CIRANO. [Downloadable!]
  15. Christos Koulovatianos & Leonard J. Mirman, 2005. "The Effects of Market Structure on Industry Growth: Rivalrous Non-excludable Capital," Vienna Economics Papers 0501, University of Vienna, Department of Economics. [Downloadable!]
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  16. Christos Koulovatianos & Leonard J. Mirman, 2003. "The Effects of Market Structure on Industry Growth ," University of Cyprus Working Papers in Economics 7-2003, University of Cyprus Department of Economics. [Downloadable!]
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  17. Stephen W. Salant & Greg Shaffer, 1999. "Unequal Treatment of Identical Agents in Cournot Equilibrium," American Economic Review, American Economic Association, vol. 89(3), pages 585-604, June. [Downloadable!] (restricted)
  18. Christos Koulovatianos & Leonard J. Mirman, 2003. "R&D Investment, Market Structure, and Industry Growth ," University of Cyprus Working Papers in Economics 8-2003, University of Cyprus Department of Economics. [Downloadable!]
  19. Arghya Ghosh & Souresh Saha, 2007. "Excess Entry in the Absence of Scale Economies," Economic Theory, Springer, vol. 30(3), pages 575-586, March. [Downloadable!] (restricted)
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