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Exchange economies with asymmetric information: competitive equilibrium and core

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  • Stefan Maus

Abstract

A replica theorem is shown to hold for exchange economies with asymmetric information. In a replicated exchange economy with asymmetric information the set of all core elements with equal treatment is nonempty, but it is in general only a subset of the core. Nevertheless, the replica theorem and the presence of at least one core element with equal treatment suffice to show existence of a competitive quasi-equilibrium. Conditions on the initial endowments and the communication system are given to ensure that every competitive quasi-equilibrium is a competitive equilibrium. Copyright Springer-Verlag Berlin/Heidelberg 2004

Suggested Citation

  • Stefan Maus, 2004. "Exchange economies with asymmetric information: competitive equilibrium and core," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 24(2), pages 395-418, August.
    • Handle: RePEc:spr:joecth:v:24:y:2004:i:2:p:395-418
    DOI: 10.1007/s00199-003-0416-x
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    Citations

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    Cited by:

    1. Basile, Achille & Donnini, Chiara & Graziano, Maria Gabriella, 2009. "Core and equilibria in coalitional asymmetric information economies," Journal of Mathematical Economics, Elsevier, vol. 45(3-4), pages 293-307, March.
    2. Carlos Hervés-Beloso & V. Martins-da-Rocha & Paulo Monteiro, 2009. "Equilibrium theory with asymmetric information and infinitely many states," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 38(2), pages 295-320, February.
    3. Achille Basile & Chiara Donnini & Maria Graziano, 2010. "Economies with informational asymmetries and limited vetoer coalitions," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 45(1), pages 147-180, October.
    4. Maria Gabriella Graziano & Claudia Meo & Nicholas C. Yannelis, 2015. "Stable sets for asymmetric information economies," International Journal of Economic Theory, The International Society for Economic Theory, vol. 11(1), pages 137-154, March.
    5. Guadalupe Fugarolas-Alvarez-Ude & Carlos Hervés-Beloso & Emma Moreno-García & Juan Torres-Martínez, 2009. "A market game approach to differential information economies," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 38(2), pages 321-330, February.
    6. Claudia Meo, 2009. "Existence of Edgeworth equilibria for economies with asymmetric information," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 38(2), pages 371-383, February.
    7. Marta Faias & Carlos Hervés-Beloso & Emma Moreno-García, 2011. "Equilibrium price formation in markets with differentially informed agents," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 48(1), pages 205-218, September.
    8. Sun, Yeneng & Yannelis, Nicholas C., 2007. "Core, equilibria and incentives in large asymmetric information economies," Games and Economic Behavior, Elsevier, vol. 61(1), pages 131-155, October.
    9. Bhowmik, Anuj & Cao, Jiling, 2018. "Ex-post core, fine core and rational expectations equilibrium allocations," Journal of Mathematical Economics, Elsevier, vol. 74(C), pages 128-138.
    10. Claudia Meo, 2015. "Cooperative Solutions for Large Economies with Asymmetric Information," Metroeconomica, Wiley Blackwell, vol. 66(1), pages 71-90, February.

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