Reny, Philip J. - In: Econometrica 83 (2015) 01, pp. 175-192
For an arbitrary data set D = {(p, x)} ⊆ (ℝ<sub>+</sub>-super-m∖ {0}) × ℝ<sub>+</sub>-super-m, finite or infinite, it is shown that the following three conditions are equivalent: (a) D satisfies GARP; (b) D can be rationalized by a utility function; (c) D can be rationalized by a utility function that is...