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Le problème de la variation des prix. Les limites de la théorie walrassienne

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  • Carlo Benetti

Abstract

[fre] Cet article propose un modèle d'équilibre général en tous points identique au modèle walrassien, à cette différence près qu'il incorpore un mécanisme de variation endogène des prix qui permet d'éliminer le crieur de prix walrassien. Le problème de K. Arrow est ainsi résolu sans qu'il soit nécessaire d'introduire la concurrence imparfaite. Ce modèle montre aussi que la règle de variation des prix suivant la loi de l'offre et de la demande, exogène dans la théorie standard, est liée logiquement à la notion walrassienne d'agent preneur de prix. Ces deux propriétés du modèle walrassien ne sont vérifiées que dans des conditions trop restrictives et économiquement insatisfaisantes. [eng] The problem of price change: the limits of the walrasian theory. . This paper proposes a general equilibrium model in all respects identical to the Walrasian one, except that it includes a mechanism by which prices change endogenously. The Walrasian auctioneer is eliminated and, consequently, the problem put forward by K. Arrow is solved without introducing imperfect competition. This model also shows that the rule of price change according to the law of supply and demand, which is exogenous in the standard general equilibrium theory, is logically related to the Walrasian price taker individual behavior. These two properties of the Walrasian model depend on too restrictive and economically unsatisfactory conditions.

Suggested Citation

  • Carlo Benetti, 2002. "Le problème de la variation des prix. Les limites de la théorie walrassienne," Revue Économique, Programme National Persée, vol. 53(5), pages 917-931.
  • Handle: RePEc:prs:reveco:reco_0035-2764_2002_num_53_5_410453
    Note: DOI:10.3406/reco.2002.410453
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    Cited by:

    1. Bauvert, Joanna, 2003. "L’ambivalence du concept de liquidité dans le Treatise on Money," L'Actualité Economique, Société Canadienne de Science Economique, vol. 79(1), pages 87-100, Mars-Juin.
    2. Pascal Bridel & Elisabeth Huck, 2002. "Yet another look at Leon Walras's theory of tatonnement," The European Journal of the History of Economic Thought, Taylor & Francis Journals, vol. 9(4), pages 513-540.

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