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Monopolistic Competition, Multiproduct Firms and Optimum Product Diversity

This paper tackles the issue of optimum product diversity in an impoerfeclty competitive market with small or large firms. First, it develops a quadratic utility model of monopolistic competition with horizontal product differentiation which avoids some of the main pitfalls of the S-D-S approach. Second, it extends the model to the case of multiproduct firms showing how product diversity is affected with respect to monopolistic competition.

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Paper provided by European University Institute in its series Economics Working Papers with number eco99/31.

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Length: 29 pages
Date of creation: 1999
Date of revision:
Handle: RePEc:eui:euiwps:eco99/31
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  1. Spence, Michael, 1976. "Product Selection, Fixed Costs, and Monopolistic Competition," Review of Economic Studies, Wiley Blackwell, vol. 43(2), pages 217-35, June.
  2. Gianmarco Ottaviano & Takatoshi Tabuchi & Jacques-Francois Tissse, 1999. "Agglomeration and Trade Revisited," CIRJE F-Series CIRJE-F-65, CIRJE, Faculty of Economics, University of Tokyo.
  3. Hart, Oliver D, 1985. "Monopolistic Competition in the Spirit of Chamberlin: Special Results," Economic Journal, Royal Economic Society, vol. 95(380), pages 889-908, December.
  4. Deneckere, Raymond J & Rothschild, Michael, 1992. "Monopolistic Competition and Preference Diversity," Review of Economic Studies, Wiley Blackwell, vol. 59(2), pages 361-73, April.
  5. d'ASPREMONT, C. & DOS SANTOS FERREIRA, R. & GÉRARD-VARET, L.-A., . "On the Dixit-Stiglitz model of monopolistic competition," CORE Discussion Papers RP -1211, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  6. Gabszewicz, Jean J. & Shitovitz, Benyamin, 1992. "The core in imperfectly competitive economies," Handbook of Game Theory with Economic Applications, in: R.J. Aumann & S. Hart (ed.), Handbook of Game Theory with Economic Applications, edition 1, volume 1, chapter 15, pages 459-483 Elsevier.
  7. Dixit, Avinash K & Stiglitz, Joseph E, 1979. "Monopolistic Competition and Optimum Product Diversity: Reply," American Economic Review, American Economic Association, vol. 69(5), pages 961-63, December.
  8. Steven C. Salop, 1979. "Monopolistic Competition with Outside Goods," Bell Journal of Economics, The RAND Corporation, vol. 10(1), pages 141-156, Spring.
  9. Paul M Romer, 1999. "Endogenous Technological Change," Levine's Working Paper Archive 2135, David K. Levine.
  10. Kiminiori Matsuyama, 1994. "Complementaries and Cumulative Processes In Models of Monopolistic Competition," Discussion Papers 1106, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  11. Benassy, Jean-Pascal, 1996. "Taste for variety and optimum production patterns in monopolistic competition," Economics Letters, Elsevier, vol. 52(1), pages 41-47, July.
  12. GARY-BOBO, Robert J., . "Cournot-Walras and locally consistent equilibria," CORE Discussion Papers RP -867, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  13. Simon P. Anderston & Andre de Palma, 1991. "Multiproduct Firms: A Nested Logit Approach," Discussion Papers 973, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  14. Bonanno, Giacomo, 1988. "Oligopoly Equilibria When Firms Have Local Knowledge of Demand," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 29(1), pages 45-55, February.
  15. Yang, Xiaokai & Heijdra, Ben J, 1993. "Monopolistic Competition and Optimum Product Diversity: Comment," American Economic Review, American Economic Association, vol. 83(1), pages 295-301, March.
  16. Blanchard, Olivier Jean & Kiyotaki, Nobuhiro, 1987. "Monopolistic Competition and the Effects of Aggregate Demand," American Economic Review, American Economic Association, vol. 77(4), pages 647-66, September.
  17. Paul Krugman, 1990. "Increasing Returns and Economic Geography," NBER Working Papers 3275, National Bureau of Economic Research, Inc.
  18. Hart, Oliver D, 1985. "Monopolistic Competition in the Spirit of Chamberlin: A General Model," Review of Economic Studies, Wiley Blackwell, vol. 52(4), pages 529-46, October.
  19. Meade, James E, 1974. "The Optimal Balance between Economies of Scale and Variety of Products: An Illustrative Model," Economica, London School of Economics and Political Science, vol. 41(164), pages 359-67, November.
  20. 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.
  21. Xavier Vives, 1990. "Trade Association Disclosure Rules, Incentives to Share Information, and Welfare," RAND Journal of Economics, The RAND Corporation, vol. 21(3), pages 409-430, Autumn.
  22. Wolinsky, Asher, 1986. "True Monopolistic Competition as a Result of Imperfect Information," The Quarterly Journal of Economics, MIT Press, vol. 101(3), pages 493-511, August.
  23. G.C. Archibald & B.C. Eaton & Richard Lipsey, 1982. "Address Models of Value Theory," Working Papers 495, Queen's University, Department of Economics.
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