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Cournot, Bertrand or Chamberlin: Toward a reconciliation

Listed author(s):
  • Parenti, Mathieu
  • Sidorov, Alexander
  • Thisse, Jacques-Francois
  • Zhelobodko, Evgeny

The purpose of this paper is to provide a comparison of three types of competition in a differentiated industry: Cournot, Bertrand, and monopolistic competition. This is accomplished in an economy involving one sector and a population of consumers endowed with separable preferences and a given number of labor units. When firms are free to enter the market, monopolistically competitive firms charge lower prices than oligopolistic firms, while the mass of varieties provided by the market is smaller under the former than the latter. If the economy is sufficiently large, Cournot, Bertrand and Chamberlin solutions converge toward the same market outcome, which may be a competitive or a monopolistically competitive equilibrium, depending on the nature of preferences

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File URL: https://mpra.ub.uni-muenchen.de/69640/1/MPRA_paper_69640.pdf
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Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 69640.

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Date of creation: 2015
Handle: RePEc:pra:mprapa:69640
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  1. Roberts, John & Sonnenschein, Hugo, 1977. "On the Foundations of the Theory of Monopolistic Competition," Econometrica, Econometric Society, vol. 45(1), pages 101-113, January.
  2. d'Aspremont, Claude & Dos Santos Ferreira, Rodolphe & Gerard-Varet, Louis-Andre, 1996. "On the Dixit-Stiglitz Model of Monopolistic Competition," American Economic Review, American Economic Association, vol. 86(3), pages 623-629, June.
  3. 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.
  4. Evgeny Zhelobodko & Sergey Kokovin & Mathieu Parenti & Jacques-François Thisse, 2011. "Monopolistic Competition in General Equilibrium: Beyond the CES," Discussion Paper Series DP2011-16, Research Institute for Economics & Business Administration, Kobe University.
  5. Novshek, William & Chowdhury, Prabal Roy, 2003. "Bertrand equilibria with entry: limit results," International Journal of Industrial Organization, Elsevier, vol. 21(6), pages 795-808, June.
  6. Behrens, Kristian & Murata, Yasusada, 2007. "General equilibrium models of monopolistic competition: A new approach," Journal of Economic Theory, Elsevier, vol. 136(1), pages 776-787, September.
  7. William Novshek, 1980. "Cournot Equilibrium with Free Entry," Review of Economic Studies, Oxford University Press, vol. 47(3), pages 473-486.
  8. Joan Robinson, 1934. "What is Perfect Competition?," The Quarterly Journal of Economics, Oxford University Press, vol. 49(1), pages 104-120.
  9. Vives, Xavier, 1985. "On the efficiency of Bertrand and Cournot equilibria with product differentation," Journal of Economic Theory, Elsevier, vol. 36(1), pages 166-175, June.
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