A Note on 'Third-Degree Price Discrimination with Interdependent Demands.'
在线性需求中引入对称相互依赖，证明即使总产出不变，垄断第三级价格歧视也能提高社会福利，这与Layson（1998）的主要结论相反，且福利改善仅惠及垄断方，消费者剩余整体下降。
By incorporating symmetric interdependence into linear demands, this note shows that monopolistic third-degree price discrimination can improve social welfare even if total output remains the same, a result that counters to one of the main results presented in Layson [this Journal, 1998]. It is also shown that this positive change in social welfare benefits the monopoly side but that consumers ' surplus decreases as a whole.