Existence of Equilibrium Prices for Discontinuous Excess Demand Correspondences
The aim of the paper is to obtain the existence of equilibrium prices in economies where the excess demand correspondences—differently from the usual condition—are not necessarily upper semicontinuous. So, in our setting, we cannot use the Gale-Debreu-Nikaido Lemma. The existence of equilibrium prices is obtained for discontinuous excess demand correspondences which obey to a condition like of the weak axiom of reveled preferences.
Volume (Year): 5 (2011)
Issue (Month): 2 (August)
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References listed on IDEAS
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- Joseph Greenberg, 1977. "An Elementary Proof of the Existence of a Competitive Equilibrium with Weak Gross Substitutes," The Quarterly Journal of Economics, Oxford University Press, vol. 91(3), pages 513-516.
- Rosa Barbolla & Luis C. Corchón, 1989. "An Elementary Proof of the Existence of a Competitive Equilibrium in a Special Case," The Quarterly Journal of Economics, Oxford University Press, vol. 104(2), pages 385-389.
- Philippe Bich, 2005. "On the existence of approximated equilibria in discontinuous economies," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00287685, HAL.
- Bich, Philippe, 2005. "On the existence of approximated equilibria in discontinuous economies," Journal of Mathematical Economics, Elsevier, vol. 41(4-5), pages 463-481, August.
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