基于Hotelling模型变体的双寡头研究

对艾奇沃斯模型得出的不稳定价格和产出的结论,霍特林(Hotelling)建立一个空间模型并提出,在运输成本存在的情况下,价格和产出都是唯一确定的。Hotelling模型为研究空间竞争问题提供一个经典的范式,但是模型本身不能解释两厂商的串谋。本文将放松原模型中消费者的刚性需求假定,引入需求密度函数,弱化区位竞争,重点考察单位运输成本,把研究角度锁定在价格博弈层面上,有效的解释双寡头之间的串谋,并认为模型结论取决于单位运输成本。

A Duopoly Research on a Varied Hotelling Model

On the unstable price and output in Edgeworth model,Hotelling establishes a spatial model to confirm that the price and output are unique and stable when the transport cost exists.Hotelling model provides a method to research spatial competition,but can not explain collusion.This essay will relax the assumption about consumer's rigid demand,then consider a demand density function,weaken the location competition,and emphasis on the unit transport cost.The research focusing on price game can effectively expla...