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Efficiency and surplus bounds in Cournot competition

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  • Anderson, Simon P.
  • Renault, Regis

Abstract

We derive bounds on the ratios of deadweight loss and consumer surplus to producer surplus under Cournot competition. To do so, we introduce a parameterization of the degree of curvature of market demand using the parallel concepts of ½-concavity and ½-convexity. The ”more concave” is demand, the larger the share of producer surplus in overall surplus, the smaller is consumer surplus relative to producer surplus, and the lower the ratio of deadweight loss to producer surplus. Deadweight loss over total potential surplus is at …rst increasing with demand concavity, then eventually decreasing. The analysis is extended to asymmetric …rm costs.
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Suggested Citation

  • Anderson, Simon P. & Renault, Regis, 2003. "Efficiency and surplus bounds in Cournot competition," Journal of Economic Theory, Elsevier, vol. 113(2), pages 253-264, December.
  • Handle: RePEc:eee:jetheo:v:113:y:2003:i:2:p:253-264
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    References listed on IDEAS

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    1. Michael Spence, 1976. "Product Selection, Fixed Costs, and Monopolistic Competition," Review of Economic Studies, Oxford University Press, vol. 43(2), pages 217-235.
    2. Besley, Timothy J. & Rosen, Harvey S., 1999. "Sales Taxes and Prices: An Empirical Analysis," National Tax Journal, National Tax Association, vol. 52(2), pages 157-178, June.
    3. Cowling, Keith & Mueller, Dennis C, 1978. "The Social Costs of Monopoly Power," Economic Journal, Royal Economic Society, vol. 88(352), pages 727-748, December.
    4. William Novshek, 1985. "On the Existence of Cournot Equilibrium," Review of Economic Studies, Oxford University Press, vol. 52(1), pages 85-98.
    5. Caplin, Andrew & Nalebuff, Barry, 1991. "Aggregation and Imperfect Competition: On the Existence of Equilibrium," Econometrica, Econometric Society, vol. 59(1), pages 25-59, January.
    6. Anderson, Simon P. & de Palma, Andre & Kreider, Brent, 2001. "Tax incidence in differentiated product oligopoly," Journal of Public Economics, Elsevier, vol. 81(2), pages 173-192, August.
    7. Dixit, Avinash K & Stiglitz, Joseph E, 1977. "Monopolistic Competition and Optimum Product Diversity," American Economic Review, American Economic Association, vol. 67(3), pages 297-308, June.
    8. Caplin, Andrew & Nalebuff, Barry, 1991. "Aggregation and Social Choice: A Mean Voter Theorem," Econometrica, Econometric Society, vol. 59(1), pages 1-23, January.
    9. Poterba, James M., 1996. "Retail Price Reactions to Changes in State and Local Sales Taxes," National Tax Journal, National Tax Association, vol. 49(2), pages 165-76, June.
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    More about this item

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

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