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The housing problem and revealed preference theory: duality and an application

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  • Ivar Ekeland
  • Alfred Galichon

Abstract

This paper exhibits a duality between the theory of Revealed Preference of Afriat and the housing allocation problem of Shapley and Scarf. In particular, it is shown that Afriat's theorem can be interpreted as a second welfare theorem in the housing problem. Using this duality, the revealed preference problem is connected to an optimal assignment problem, and a geometrical characterization of the rationalizability of experiment data is given. This allows in turn to give new indices of rationalizability of the data, and to define weaker notions of rationalizability, in the spirit of Afriat's efficiency index.

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  • Ivar Ekeland & Alfred Galichon, 2021. "The housing problem and revealed preference theory: duality and an application," Papers 2102.02593, arXiv.org.
    • Handle: RePEc:arx:papers:2102.02593
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    1. Forges, Françoise & Minelli, Enrico, 2009. "Afriat's theorem for general budget sets," Journal of Economic Theory, Elsevier, vol. 144(1), pages 135-145, January.
    2. Shapley, Lloyd & Scarf, Herbert, 1974. "On cores and indivisibility," Journal of Mathematical Economics, Elsevier, vol. 1(1), pages 23-37, March.
    3. Ivar Ekeland, 2010. "Notes on optimal transportation," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 42(2), pages 437-459, February.
    4. Matzkin, Rosa L, 1991. "Axioms of Revealed Preference for Nonlinear Choice Sets," Econometrica, Econometric Society, vol. 59(6), pages 1779-1786, November.
    5. John Quah, 2012. "A revealed preference test for weakly separable preferences," Economics Series Working Papers 601, University of Oxford, Department of Economics.
    6. W. E. Diewert, 1973. "Afriat and Revealed Preference Theory," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 40(3), pages 419-425.
    7. repec:dau:papers:123456789/4099 is not listed on IDEAS
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