论文标题
经济的潜力：二元性和平衡
The Economy's Potential: Duality and Equilibrium
论文作者
论文摘要
我介绍了分配和价格的凹入功能 - 经济的潜力 - 衡量了实用社会福利及其双重的差异。我表明沃尔拉斯平衡对应于潜力的根源：分配最大化加权效用，价格最小化了加权间接效用。沃尔拉斯的价格是“公用事业清算”，从某种意义上说，公用事业人对沃尔拉斯价格的预期是可行的。我讨论了这种简单二元性对平衡存在，福利定理和沃尔拉斯价格的解释的含义。
I introduce a concave function of allocations and prices -- the economy's potential -- which measures the difference between utilitarian social welfare and its dual. I show that Walrasian equilibria correspond to roots of the potential: allocations maximize weighted utility and prices minimize weighted indirect utility. Walrasian prices are "utility clearing" in the sense that the utilities consumers expect at Walrasian prices are just feasible. I discuss the implications of this simple duality for equilibrium existence, the welfare theorems, and the interpretation of Walrasian prices.
