Mathematical Modeling of Consumer's Preferences Using Partial Differential Equations
The aim of this paper is to define consumer's preferences from the differentiable viewpoint in the sense of Debreu. In this framework given the marginal rates of substitution we can consider a vector field to represent consumer's preferences in the microeconomic theory. By definition the marginal rates of substitution satisfy a system of first order partial differential equations. For a continuously differentiable vector field that holds the integrability conditions we provide a general method to solve the system. In the special case of integrable preferences these conditions impose symmetry properties in the underlying preferences. Our results allow to characterize consumer's preferences in terms of the indifference map for the following classes: linear, quasi-linear, separable, homothetic, homothetic and separable. We show that this alternative approach is connected with the traditional formulation concerning the representability of preferences by utility functions. Moreover, we deduce even the general expression of utility functions that satisfy the integrability conditions in the context of ordinal utility.
|Date of creation:||May 2013|
|Date of revision:|
|Contact details of provider:|| Postal: |
Phone: + 351 239 790 500
Fax: +351 239 403511
Web page: http://www.uc.pt/en/feuc/gemf/
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Debreu, Gerard, 1972.
Econometric Society, vol. 40(4), pages 603-15, July.
- Mas-Colell, Andreu & Whinston, Michael D. & Green, Jerry R., 1995. "Microeconomic Theory," OUP Catalogue, Oxford University Press, number 9780195102680, March.
- Birendra K. Rai & Chiu Ki So & Aaron Nicholas, 2012. "A Primer On Mathematical Modelling In Economics," Journal of Economic Surveys, Wiley Blackwell, vol. 26(4), pages 594-615, 09.
When requesting a correction, please mention this item's handle: RePEc:gmf:wpaper:2013-15.. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Sara Santos)
If references are entirely missing, you can add them using this form.