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Injectivity and the Law of Demand

Roy Allen

arXiv 15 Aug 2019 · Econometrics · publishedEconomics Letters (2022) · 1 citations (OpenAlex)

arXiv:1908.05714 · PDF · DOI · OpenAlex · Extracted main text

Abstract

Establishing that a demand mapping is injective is core first step for a variety of methodologies. When a version of the law of demand holds, global injectivity can be checked by seeing whether the demand mapping is constant over any line segments. When we add the assumption of differentiability, we obtain necessary and sufficient conditions for injectivity that generalize classical \cite{gale1965jacobian} conditions for quasi-definite Jacobians.

Citation extraction

37
references
80
in-text mentions
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distinct cited
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5,945
main-text words

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Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
1David Gale and Hukukane Nikaido (1965) The jacobian matrix and global univalence of mappings0.97715793%
2Steven Berry, Amit Gandhi, and Philip Haile (2013) Connected substitutes and invertibility of demand0.97112492%
3Donald J Brown and Rosa Liliana Matzkin (1998) Estimation of nonparametric functions in simultaneous equations models, with an application to consumer demand0.87452100%
4Daniel McFadden (1981) Econometric models of probabilistic choice0.73732100%
5R Tyrrell Rockafellar (1970) Convex Analysis0.73732100%
6Richard Blundell, Dennis Kristensen, Rosa Matzkin, et al (2017) Individual counterfactuals with multidimensional unobserved heterogeneity0.64422100%
7Gábor Kassay, Cornel Pintea, and Ferenc Szenkovits (2009) On convexity of preimages of monotone operators0.64422100%
8R Tyrrell Rockafellar and Roger J-B Wets (2009) Variational analysis, volume 3170.64422100%
9Roy Allen and John Rehbeck (2019) Identification with additively separable heterogeneity self0.58531100%
10J Moré and Werner Rheinboldt (1973) On p-and s-functions and related classes of n-dimensional nonlinear mappings0.5114225%

Showing the top 10 of 37 scored citations.

Cited by, within the corpus

arXiv econ.EM papers that cite this one, ranked by how heavily they lean on it.

Citing paperIntensityMentionsSections
1Identification of Random Coefficient Latent Utility Models0.40511