Nullity Restrictions and Comparative Static Analysis
研究一般优化模型中类似齐次性的零度限制的存在性、性质及其对经济行为比较静态分析的意义，填补了优化理论在经济学应用中的一个空白。
While homogeneity restrictions of optimal choice functions are well known in the context of neoclassical economic theory, the existence and implications of homogeneity-like restrictions in more general optimization models have not received much attention in the literature. The authors call such restrictions restrictions since they involve the null space of the matrix of slopes of choice functions. The existence, nature, and implications of nullity restrictions are investigated in the context of a general optimization problem. This contributes to closing a major gap in the analysis of the implications of optimization for economic behavior. Copyright 1992 by Economics Department of the University of Pennsylvania and the Osaka University Institute of Social and Economic Research Association.