Contents Inter-temporal preferences Two periods Several periods · Asset market CAPM -APT Complete market Pure arbitrage

Content Public goods Subscription Efficient provision of public goods Public choice EXternality What's externality? How to solute it? What's the efficient condition with externality

Content The“core” Uniqueness of equilibrium Stability of equilibrium Welfare

Content Pure exchange system The existence of Walrasian equilibrium The first theorem of welfare economics The second theorem of welfare economics Exchange with production

Duality Given the technology we can obtain the cost function are the cost function contains the same information of the technology (production function)? If the answer is yes, then the cost minimization behavior will indicate the technology of the firm

直复营销:依靠产品目录、印刷品邮件、 电话或附有直接反馈的广告以及其他相互交流形式的媒体的大范围营销活动

8.1.1网络广告的发展 1.网络广告的发展现状

网络促销是指利用现代化的网络技术向虚拟市场传递有关产 品和服务的信息,以启发需求,引起消费者购买欲望和购 买行为的各种活动

CONTENT WA and demand law From preferences to utility Utility maximization Expenditure minimization

Duality Given the technology, we can obtain the cost function, are the cost function contains the same information of the technology (production function)? If the answer is \yes\, then the cost minimization behavior will indicate the technology of the firm