Agglomeration incentives in a spatial Cournot model with increasing returns to scale

Original Paper


This paper uses a spatial Cournot competition model to examine the effect of increasing returns to scale (IRS) in manufacturing as an agglomerating force between a fixed number of firms competing over regional markets. As one would expect, with a constant returns to scale (CRS) manufacturing sector the dispersed symmetric equilibrium will always be stable. The first important result is the confirmation that even low levels of IRS provide incentives for the manufacturing firms to deviate from this symmetric equilibrium and move towards agglomeration. An interesting aspect of the results, however, is that IRS do not automatically imply an unstable symmetric equilibrium, and the threshold required to provoke instability increases with transport costs.


Agglomeration Increasing returns to scale Imperfect competition 

JEL Classification

R10 R12 F12 


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  1. Anderson, S.P., Neven, D.J.: Cournot competition yields spatial agglomeration. Int. Econ. Rev. 32, 793–808 (1991) CrossRefGoogle Scholar
  2. Brakman, S., Garretsen, H., Van Marrewijk, C.: An Introduction to Geographical Economics. Cambridge University Press, Cambridge (2001) Google Scholar
  3. Combes, P.-P., Lafourcade, M.: Transport cost decline and regional inequalities: evidence from France. CEPR discuss. pap. 2894 (2001) Google Scholar
  4. Combes, P.-P., Lafourcade, M.: Transport costs: measures, determinants, and regional policy implications for France. J. Econ. Geogr. 5, 319–349 (2005) CrossRefGoogle Scholar
  5. Dixit, A.K., Stiglitz, J.E.: Monopolistic competition and optimum product diversity. Am. Econ. Rev. 67, 297–308 (1977) Google Scholar
  6. Fujita, M., Thisse, J.-F.: Economics of agglomeration. J. Jpn. Int. Econ. 10, 339–378 (1996) CrossRefGoogle Scholar
  7. Gupta, B., Pal, D., Sarkar, J.: Spatial Cournot competition and agglomeration in a model of location choice. Reg. Sci. Urban Econ. 27, 261–282 (1997) CrossRefGoogle Scholar
  8. Krugman, P.: Increasing returns and economic geography. J. Polit. Econ. 99, 483–499 (1991) CrossRefGoogle Scholar
  9. Krugman, P.: Space: the final frontier. J. Econ. Perspec. 12, 161–174 (1998) Google Scholar
  10. Mayer, T.: Spatial Cournot competition and heterogeneous production costs across locations. Reg. Sci. Urban Econ. 30, 325–352 (2000) CrossRefGoogle Scholar
  11. Ottaviano, G., Puga, D.: Agglomeration in the global economy: a survey of the ‘New Economic Geography’. World Econ. 21, 707–731 (1998) CrossRefGoogle Scholar
  12. Puga, D.: The rise and fall of regional inequalities. Eur. Econ. 43, 303–334 (1999) CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  1. 1.OFCE–DRICValbonneFrance

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