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Price-dependent demand in spatial models

  • Gu, Yiquan
  • Wenzel, Tobias

This paper introduces price-dependent individual demand into the circular city model of product differentiation. We show that for any finite number of firms, a unique symmetric price equilibrium exists provided that demand functions are not too convex. As in the case of unit demand, the number of firms under free entry decreases in the fixed cost of entry while increases in the transportation cost of consumers. However, this number is no longer always in excess of the socially optimal level. Insufficient entry occurs when the fixed and transportation costs are high.

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File URL: http://econstor.eu/bitstream/10419/55139/1/684775085.pdf
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Paper provided by Heinrich‐Heine‐Universität Düsseldorf, Düsseldorf Institute for Competition Economics (DICE) in its series DICE Discussion Papers with number 43.

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Date of creation: 2012
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Handle: RePEc:zbw:dicedp:43
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  1. Toshihiro Matsumura, 2000. "Entry regulation and social welfare with an integer problem," Journal of Economics, Springer, vol. 71(1), pages 47-58, February.
  2. Antoni Calvó-Armengol & Yves Zenou, 2002. "The Importance of the Distribution of Consumers in Horizontal Product Differentiation," Journal of Regional Science, Wiley Blackwell, vol. 42(4), pages 793-803.
  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. Janssen, Maarten C.W. & Karamychev, Vladimir A. & van Reeven, Peran, 2005. "Multi-store competition: Market segmentation or interlacing?," Regional Science and Urban Economics, Elsevier, vol. 35(6), pages 700-714, November.
  5. repec:rwi:repape:0033 is not listed on IDEAS
  6. S. P. Anderson & A. de Palma, 1997. "From local to global competition," THEMA Working Papers 97-10, THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise.
  7. Suleymanova Irina & Wey Christian, 2011. "Bertrand Competition in Markets with Network Effects and Switching Costs," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 11(1), pages 1-58, September.
  8. Jean Tirole, 1988. "The Theory of Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262200716, June.
  9. Neven, Damien J., 1986. "On Hotelling's competition with non-uniform customer distributions," Economics Letters, Elsevier, vol. 21(2), pages 121-126.
  10. Matsumura Toshihiro & Matsushima Noriaki, 2010. "When Small Firms Fight Back Against Large Firms in R&D Activities," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 10(1), pages 1-42, September.
  11. Rath, Kali P. & Zhao, Gongyun, 2001. "Two stage equilibrium and product choice with elastic demand," International Journal of Industrial Organization, Elsevier, vol. 19(9), pages 1441-1455, November.
  12. Paul Madden & Mario Pezzino, 2007. "Oligopoly on a Salop circle with centre," The School of Economics Discussion Paper Series 0707, Economics, The University of Manchester.
  13. Andrew Caplin & Barry Nalebuff, 1990. "Aggregation and Imperfect Competition: On the Existence of Equilibrium," Cowles Foundation Discussion Papers 937, Cowles Foundation for Research in Economics, Yale University.
  14. Norman, George & Thisse, Jacques-Francois, 1996. "Product Variety and Welfare under Tough and Soft Pricing Regimes," Economic Journal, Royal Economic Society, vol. 106(434), pages 76-91, January.
  15. d'Aspremont, C & Gabszewicz, Jean Jaskold & Thisse, J-F, 1979. "On Hotelling's "Stability in Competition"," Econometrica, Econometric Society, vol. 47(5), pages 1145-50, September.
  16. Matsumura, Toshihiro & Okamura, Makoto, 2006. "A note on the excess entry theorem in spatial markets," International Journal of Industrial Organization, Elsevier, vol. 24(5), pages 1071-1076, September.
  17. Gu, Yiquan & Wenzel, Tobias, 2009. "A note on the excess entry theorem in spatial models with elastic demand," International Journal of Industrial Organization, Elsevier, vol. 27(5), pages 567-571, September.
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