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.

Preferences and normal goods: An easy-to-check necessary and sufficient condition / Bilancini, Ennio; L., Boncinelli. - In: ECONOMICS LETTERS. - ISSN 0165-1765. - STAMPA. - 108:(2010), pp. 13-15. [10.1016/j.econlet.2010.03.005]

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

BILANCINI, Ennio;
2010

Abstract

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.
108
13
15
Preferences and normal goods: An easy-to-check necessary and sufficient condition / Bilancini, Ennio; L., Boncinelli. - In: ECONOMICS LETTERS. - ISSN 0165-1765. - STAMPA. - 108:(2010), pp. 13-15. [10.1016/j.econlet.2010.03.005]
Bilancini, Ennio; L., Boncinelli
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/642322
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