Preferences and normal goods: An easy-to-check necessary and sufficient condition

被引：7
|
作者：
Bilancini, Ennio [1 ]
Boncinelli, Leonardo [2 ]
机构：
[1] Univ Modena & Reggio Emilia, Dept Econ, I-41100 Modena, Italy
[2] Univ Siena, Dept Econ, I-53100 Siena, Italy
来源：
ECONOMICS LETTERS | 2010年 / 108卷 / 01期
关键词：
Normal goods; Bordered Hessian;
D O I：
10.1016/j.econlet.2010.03.005
中图分类号：
F [经济];
学科分类号：
02 ;
摘要：
We provide a necessary and sufficient condition for goods to be normal when utility functions are differentiable and strongly quasi-concave. Our condition is equivalent to the condition proposed by Alarie et al. (1990), but it is easier to check: it only requires to compute the minors associated with the border column (or row) of the bordered Hessian matrix of the utility function. (C) 2010 Elsevier By. All rights reserved.
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页码：13 / 15
页数：3
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