The LeChatelier Principle
扩展了萨缪尔森引入经济学的勒夏特列原理，使其适用于大价格变化、非补偿需求以及需求理论之外的广泛凹与非凹最大化问题，并阐明了该原理的直观基础。
Forthcoming in the American Economic Review The LeChatelier principle, in the form introduced into economics by Samuelson, asserts that at a point of long-run equilibrium, the derivative of long-run compensated demand with respect to own price is larger in magnitude than the derivative of short-run compensated demand. We introduce an extended LeChatelier principle that applies also to large price changes and to uncompensated demand as well as to a wide range of concave and nonconcave maximization problems outside the scope of demand theory. This extension also clarifies the intuitive basis of the principle. JEL classification numbers: C60, D10, D20.