Structure Types of cost curves Fixed, variable and total cost functions Average fixed, average variable and average cost functions Marginal cost functions Marginal and variable cost functions Marginal and average cost functions Short run and long run cost curves
Structure Describing technologies Production set or technology set Production function Isoquant Marginal product Returns to scale Technical rate of substitution well- behaved technologies Long run and short run
Exchange Economies (revisited) No production, only endowments,so no description of how resources are converted to consumables. General equilibrium: all markets clear simultaneously. 1st and 2nd Fundamental Theorems of Welfare Economics
Properties of Demand Functions Comparative statics analysis(比较 静态分析) of ordinary demand functions the study of how ordinary demands *(p,P2,y) and x2*(p1,P2,y) change as prices p1, P2 and income y change