Injectivity and the Law of Demand
Econometrics
2019-08-19 v1
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.
Cite
@article{arxiv.1908.05714,
title = {Injectivity and the Law of Demand},
author = {Roy Allen},
journal= {arXiv preprint arXiv:1908.05714},
year = {2019}
}
Comments
22 pages