When different market concentration indices agree
AbstractMarket concentration ratios are popular statistics for characterizing the extent of market dominance in an imperfectly competitive market, but these ratios may not agree when comparing two markets. Neither do they necessarily agree with the Herfindahl-Hirschman or entropy indices. This letter compares two Cournot oligopoly markets in which firms have constant unit costs. It is shown that the majorization pre-ordering on normalized marketing margin vectors is both necessary and sufficient for all aforementioned indices to agree on which is the more concentrated market.
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Bibliographic InfoArticle provided by Elsevier in its journal Economics Letters.
Volume (Year): 95 (2007)
Issue (Month): 2 (May)
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- Zhao, Jingang, 2001.
"A characterization for the negative welfare effects of cost reduction in Cournot oligopoly,"
International Journal of Industrial Organization,
Elsevier, vol. 19(3-4), pages 455-469, March.
- Jingang Zhao, 1999. "A Characterization of the Negative Welfare Effects of Cost Reduction in Cournot Oligopoly," Working Papers 99-06, Ohio State University, Department of Economics.
- Chambers,Robert G. & Quiggin,John, 2000.
"Uncertainty, Production, Choice, and Agency,"
Cambridge University Press, number 9780521785235, November.
- Philippe Aghion & Nicholas Bloom & Richard Blundell & Rachel Griffith & Peter Howitt, 2002.
"Competition and Innovation: An Inverted U Relationship,"
NBER Working Papers
9269, National Bureau of Economic Research, Inc.
- Philippe Aghion & Nick Bloom & Richard Blundell & Rachel Griffith & Peter Howitt, 2005. "Competition and Innovation: An Inverted-U Relationship," The Quarterly Journal of Economics, MIT Press, vol. 120(2), pages 701-728, May.
- Howitt, Peter & Griffith, Rachel & Aghion, Philippe & Blundell, Richard & Bloom, Nick, 2005. "Competition and Innovation: An Inverted-U Relationship," Scholarly Articles 4481507, Harvard University Department of Economics.
- Philippe Aghion & Nicholas Bloom & Richard Blundell & Rachel Griffith & Peter Howitt, 2002. "Competition and innovation: an inverted U relationship," IFS Working Papers W02/04, Institute for Fiscal Studies.
- Shorrocks, Anthony F, 1983. "Ranking Income Distributions," Economica, London School of Economics and Political Science, vol. 50(197), pages 3-17, February.
- Dasgupta, Partha & Sen, Amartya & Starrett, David, 1973. "Notes on the measurement of inequality," Journal of Economic Theory, Elsevier, vol. 6(2), pages 180-187, April.
- Harvey E. Lapan & David A. Hennessy, 2002.
"Symmetry and order in the portfolio allocation problem,"
Springer, vol. 19(4), pages 747-772.
- Lapan, Harvey E. & Hennessy, David A., 2002. "Symmetry and Order in the Portfolio Allocation Problem," Staff General Research Papers 5106, Iowa State University, Department of Economics.
- Efe A. Ok, 1997. "A note on the existence of progressive tax structures," Social Choice and Welfare, Springer, vol. 14(4), pages 527-543.
- Greg Shaffer & Stephen W. Salant, 1999. "Unequal Treatment of Identical Agents in Cournot Equilibrium," American Economic Review, American Economic Association, vol. 89(3), pages 585-604, June.
- Hrazdil, Karel & Zhang, Ray, 2012. "The importance of industry classification in estimating concentration ratios," Economics Letters, Elsevier, vol. 114(2), pages 224-227.
- Darko Tipurić & Mirjana Pejić Bach, 2009. "Changes in Industrial Concentration in the Croatian Economy (1995-2006)," EFZG Working Papers Series 0903, Faculty of Economics and Business, University of Zagreb.
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