IDEAS home Printed from
MyIDEAS: Log in (now much improved!) to save this article

En quête d'un indice de l'intensité de la concurrence. Réflexions sur l'indétermination de l'équilibre oligopolistique

Listed author(s):
  • Rodolphe Dos Santos Ferreira

The intensity of competition is viewed here in the specific form of the competitive toughness exhibited by a firm towards its competitors, as reflected in its market strategies (prices and quantities). The competitive environment, resulting in particular from former choices, concerning entry, location in the characteristics space or technology, is taken as given. A concept of equilibrium in a homogeneous or differentiated oligopoly is used, where simultaneous price and quantity choices must satisfy two constraints : an individual constraint on the market share and a collective constraint on market size. The relative weight of the multiplier which is associated with the former constraint may be taken as an index of the competitive toughness of any active competitor at a given equilibrium. We thus obtain a parametrisation of the equilibria, leading to a unified approach of the static theory of oligopolistic competition. The very number of active competitors within a population of potential producers is a supplementary index of competitive toughness characterizing an equilibrium. Some considerations on the macroeconomic use of such indices of competitive toughness conclude the paper. Classification JEL : D43, E3, L11, L13, L16

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

File URL:
Download Restriction: free

File URL:
Download Restriction: free

Article provided by Presses de Sciences-Po in its journal Revue économique.

Volume (Year): 54 (2003)
Issue (Month): 3 ()
Pages: 441-467

in new window

Handle: RePEc:cai:recosp:reco_543_0441
Contact details of provider: Web page:

No references listed on IDEAS
You can help add them by filling out this form.

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

When requesting a correction, please mention this item's handle: RePEc:cai:recosp:reco_543_0441. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Jean-Baptiste de Vathaire)

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.

This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.