IDEAS home Printed from https://ideas.repec.org/p/hal/journl/halshs-00085912.html
   My bibliography  Save this paper

Beliefs and Pareto Efficient Sets: A Remark

Author

Listed:
  • Thibault Gajdos

    (EUREQUA - Equipe Universitaire de Recherche en Economie Quantitative - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique)

  • Jean-Marc Tallon

    (EUREQUA - Equipe Universitaire de Recherche en Economie Quantitative - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique)

Abstract

We show that, in a two-period economy with uncertainty in the second period, if an allocation is Pareto optimal for a given set of beliefs and remains optimal when these beliefs are changed, then the set of optimal allocations of the two economies must actually coincide. We identify equivalence classes of beliefs giving rise to the same set of Pareto optimal allocations.

Suggested Citation

  • Thibault Gajdos & Jean-Marc Tallon, 2002. "Beliefs and Pareto Efficient Sets: A Remark," Post-Print halshs-00085912, HAL.
    • Handle: RePEc:hal:journl:halshs-00085912
    DOI: 10.1006/jeth.2001.2899
    Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-00085912
    as

    Download full text from publisher

    File URL: https://shs.hal.science/halshs-00085912/document
    Download Restriction: no
    File URL: https://libkey.io/10.1006/jeth.2001.2899?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Other versions of this item:

    References listed on IDEAS

    as
    1. Radner, Roy, 1979. "Rational Expectations Equilibrium: Generic Existence and the Information Revealed by Prices," Econometrica, Econometric Society, vol. 47(3), pages 655-678, May.
    2. Cass, David & Chichilnisky, Graciela & Wu, Ho-Mou, 1996. "Individual Risk and Mutual Insurance," Econometrica, Econometric Society, vol. 64(2), pages 333-341, March.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Bisin, Alberto & Gottardi, Piero, 1999. "Competitive Equilibria with Asymmetric Information," Journal of Economic Theory, Elsevier, vol. 87(1), pages 1-48, July.
    2. Mordecai Kurz, 1997. "Social States of Belief and the Determinants of the Equity Risk Premium in A Rational Belief Equilibrium," Working Papers 97026, Stanford University, Department of Economics.
    3. Lionel DE BOISDEFFRE, 2015. "Existence of financial equilibrium with differential information: the no-arbitrage characterization," Working Papers 2015-2016_5, CATT - UPPA - Université de Pau et des Pays de l'Adour, revised Nov 2015.
    4. Elchanan Ben-Porath, 2007. "Trade with Heterogeneous Beliefs," Discussion Paper Series dp462, The Federmann Center for the Study of Rationality, the Hebrew University, Jerusalem.
    5. Ben Klemens, 2013. "A Peer-based Model of Fat-tailed Outcomes," Papers 1304.0718, arXiv.org.
    6. Lionel de Boisdeffre, 2018. "Sequential equilibrium without rational expectations of prices: A theorem of full existence," Post-Print halshs-01593567, HAL.
    7. Siemroth, Christoph, 2014. "Why prediction markets work : The role of information acquisition and endogenous weighting," Working Papers 14-02, University of Mannheim, Department of Economics.
    8. Ana Fostel & John Geanakoplos, 2013. "Financial Innovation, Collateral and Investment," Cowles Foundation Discussion Papers 1903, Cowles Foundation for Research in Economics, Yale University.
    9. Chiara Donnini & Marialaura Pesce, 2020. "Strict fairness of equilibria in asymmetric information economies and mixed markets," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 69(1), pages 107-124, February.
    10. Lionel De Boisdeffre, 2015. "Existence of financial equilibrium with differential information: the no-arbitrage characterization," Working Papers hal-02945462, HAL.
    11. Lucian Arye Bebchuk & Chaim Fershtman, 1990. "The Effects of Insider Trading on Insiders' Choice Among Risky Investment Projects," Discussion Papers 897, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
    12. Lawrence Choo & Todd R. Kaplan & Ro’i Zultan, 2019. "Information aggregation in Arrow–Debreu markets: an experiment," Experimental Economics, Springer;Economic Science Association, vol. 22(3), pages 625-652, September.
    13. Michael Ostrovsky, 2012. "Information Aggregation in Dynamic Markets With Strategic Traders," Econometrica, Econometric Society, vol. 80(6), pages 2595-2647, November.
    14. Forges, Francoise & Minelli, Enrico & Vohra, Rajiv, 2002. "Incentives and the core of an exchange economy: a survey," Journal of Mathematical Economics, Elsevier, vol. 38(1-2), pages 1-41, September.
    15. Paolo Siconolfi & Aldo Rustichini, 2012. "Economies with Observable Types," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 15(1), pages 57-71, January.
    16. Lionel De Boisdeffre, 2016. "Characterizing Revealing and Arbitrage-Free Financial Markets," Working Papers hal-02938862, HAL.
    17. Lionel de Boisdeffre, 2013. "Price revelation and existence of equilibrium in a private belief economy," Post-Print halshs-01053471, HAL.
    18. HEIFETZ, Aviad & MINELLI, Enrico & POLEMARCHAKIS, Heracles, 1999. "Arbitrage and equilibrium with exchangeable risks," LIDAM Discussion Papers CORE 1999046, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    19. Sjur Didrik Flåm & Elmar G. Wolfstetter, 2015. "Liability Insurance and Choice of Cars: A Large Game Approach," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 17(6), pages 943-963, December.
    20. Nicolas S. Lambert & Michael Ostrovsky & Mikhail Panov, 2018. "Strategic Trading in Informationally Complex Environments," Econometrica, Econometric Society, vol. 86(4), pages 1119-1157, July.

    More about this item

    Keywords

    Beliefs; Pareto Optimality;

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:hal:journl:halshs-00085912. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: CCSD (email available below). General contact details of provider: https://hal.archives-ouvertes.fr/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.