Contents The Edgeworth(艾奇沃斯)Box Pareto improving trade Pareto Efficient Allocation The core(核心) Trade in a competitive market Wa| ras'Law of genera| equilibrium(一般均 衡) First fundamental theorem of welfare Economics(福利经济学第一定理) Second Fundamental Theorem of welfare Economics(福利经济学第二定理)Contents The Edgeworth (艾奇沃斯) Box Pareto improving trade Pareto Efficient Allocation The Core (核心) Trade in a competitive market Walras’ Law of general equilibrium (一般均 衡) First Fundamental Theorem of Welfare Economics (福利经济学第一定理) Second Fundamental Theorem of Welfare Economics (福利经济学第二定理)