The Foundations of Money Illusion in a Neoclassical Micro-Monetary Model: Comment
评论了D-K在1974年提出的货币幻觉充分条件，指出其方程(2)与D-K条件逻辑等价，并分析了零次齐次性效用函数与无幻觉需求函数的关系，以及半可分离效用函数如何恢复斯卢茨基性质。
1) That their equation (2) is logically equivalent to our (hereafter, D-K) sufficiency conditions presented in the 1974 issue of this Review. 2) That the assumption of degree zero homogeneity (in the variables m and p) of the utility function serves completely to characterize the class of illusion-free demand functions derivable from ordinal utility theory. 3) That it is possible to reinstate the usual Slutsky properties by adopting the semi-separable utility function given in their equation (4).