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Manipulation-proof equilibrium in atomless economies with commodity differentiation

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Author Info

  • Mário Rui Páscoa

    ()
    (Faculdade de Economia, Universidade Nova de Lisboa, Travessa Estêv ao Pinto . P-1099-032 Lisboa, PORTUGAL)

  • Carlos Hervés-Beloso

    (Departamento de Matemáticas, Universidad de Vigo, Aptdo 874, E-36200 Vigo, SPAIN)

  • Emma Moreno-García

    ()
    (Faculdade de Economia, Universidade Nova de Lisboa, Travessa Estêv ao Pinto . P-1099-032 Lisboa, PORTUGAL)

Abstract

In this paper, we introduce a perfect competition test which checks the incentives of arbitrarily small coalitions to behave strategically in endowments and preferences. We apply this coalitional incentive compatibility test to atomless economies with a continuum of differentiated commodities. We show that, under thickness conditions, economies with a finite number of types and economies whose set of agents' preferences is compact, pass this perfect competition test. Limiting results for replica economies are also presented.

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Bibliographic Info

Article provided by Springer in its journal Economic Theory.

Volume (Year): 14 (1999)
Issue (Month): 3 ()
Pages: 545-563

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Handle: RePEc:spr:joecth:v:14:y:1999:i:3:p:545-563

Note: Received: July 25, 1997; revised version: December 5, 1998
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Related research

Keywords: Perfect competition; Continuum economies; Incentive compatibility; Thick markets; Walrasian equilibrium.;

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Cited by:
  1. Hervés-Beloso, Carlos & Moreno-Garci­a, Emma, 2008. "Competitive equilibria and the grand coalition," Journal of Mathematical Economics, Elsevier, vol. 44(7-8), pages 697-706, July.

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