Direct Welfare Analysis of Relative Price Regulation*
综合并发展了相对价格管制的福利分析方法，通过凸性论证直接推导福利结果，并应用于消费者剩余分析。
The paper synthesizes and develops the welfare analysis of regulating relative prices, for example price differences, of which banning price discrimination is a special case. Welfare results are derived directly by convexity arguments using functions of welfare levels. The method is also used to obtain results about effects on consumer surplus.