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Giffen Goods: A Duality Theorem

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  • Henry Keith Moffatt

    (Cambridge)

  • Peter Moffatt

    (School of Economics, University of East Anglia)

Abstract

We show that if two goods whose Indirect Utility Function V (p; q) exhibits the Giffen property for good 1 in some subdomain G(p; q) of the positive quadrant, and if U(x; y) is a Direct Utility Function given by U(x; y) = -V (x; y) and therefore having the same convex contours as V, then U also exhibits the Giffen property for good 2 rather than for good 1, in the corresponding region G(x; y) of the positive (x; y) quadrant. The converse is also true.

Suggested Citation

  • Henry Keith Moffatt & Peter Moffatt, 2010. "Giffen Goods: A Duality Theorem," University of East Anglia Applied and Financial Economics Working Paper Series 012, School of Economics, University of East Anglia, Norwich, UK..
    • Handle: RePEc:uea:aepppr:2010_12
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    File URL: https://ueaeco.github.io/working-papers/papers/afe/UEA-AFE-012.pdf
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    References listed on IDEAS

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    1. repec:bla:manchs:v:68:y:2000:i:3:p:349-59 is not listed on IDEAS
    2. Moffatt, Peter G., 2002. "Is Giffen behaviour compatible with the axioms of consumer theory?," Journal of Mathematical Economics, Elsevier, vol. 37(4), pages 259-267, July.
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    Cited by:

    1. Peter G. Moffatt, 2012. "A Class of Indirect Utility Functions Predicting Giffen Behaviour," Lecture Notes in Economics and Mathematical Systems, in: Wim Heijman & Pierre Mouche (ed.), New Insights into the Theory of Giffen Goods, pages 127-141, Springer.

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