一个令人困惑的瓦尔拉斯均衡模型

A Bewildered Model of Walrasian Equilibrium

在文献[1]中较为详细描述的瓦尔拉斯一般均衡模型中有两个严重的逻辑错误:其一,在规划问题中将参变量与待定变量(值)混同,从而无法得出合理的社会总需求与总供给;其二,在“推导”瓦尔拉斯定律时,混同方程与恒等式,从而使瓦尔拉斯定律成为无意义的关系.其在数学上的解释也引出荒谬的结果.因以上原因,该模型自身无法协调.深入分析了这两个错误之后,给出了一个修正模型.

A comparatively detailed model of walrasian equilibrium is provided in [1], however, there are two serious logic mistakes which make the model inconsistent. Firstly,in the projecting problem, the parameter and undetermined variable are confused, and the social total supply and total demand can not be reasonably acquired. Secondly,in the deducing Walras＇ law,the equation and the identity are blurred,which makes walras＇ law be an insignificant relation. It also drew out absurd results in the mathematical explanation. The two mistakes are deeply analyzed in this paper and a revised model is provided.