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Imperfect competition à la Negishi also with fixed costs

  • Pierre Dehez

    (University of Louvain)

  • Jacques Dreze

    (university of Louvain)

  • Takashi Suzuki

    (Meiji-Gakuin University)

The paper studies equilibria for economies with imperfect competition and non-convex technologies. Following Negishi firms maximise profits under downward-sloping perceived demand functions. Negishi's assumptions, in particular the assumption of a single monopolistic competitor in each market, are relaxed. Existence of equilibria is obtained, under otherwise standard assumptions, for production sets defined in each firm by the union of a convex technology and a technology subjected to fixed costs. In the light of a counterexample it is assumed that fixed factors are distinct from variable factors. Technically the proof rests on pricing rules.

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File URL: http://econwpa.repec.org/eps/mic/papers/0304/0304003.pdf
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Paper provided by EconWPA in its series Microeconomics with number 0304003.

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Length: 30 pages
Date of creation: 07 Apr 2003
Date of revision:
Handle: RePEc:wpa:wuwpmi:0304003
Note: Type of Document - pdf; prepared on Tex; pages: 30; figures: included. to appear in JME
Contact details of provider: Web page: http://econwpa.repec.org

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  1. Bonnisseau, J.-M. & Cornet, B., 1986. "Existence of equilibria when firms follow bounded losses pricing rules," CORE Discussion Papers 1986007, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  2. 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.
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