纵向差异与豪太林模型的横向差异"最小化原则"

文章将产品纵向差异引入豪太林模型,并在假设企业产品存在一定纵向差异条件下,得到位置——价格博弈的唯一子博弈精炼纳什均衡.由于纵向差异的存在增强了企业的市场力量,使得企业通过实施横向差异化战略以缓和价格竞争而带来的收益有所减少,从而弱化了企业在横向差异产品空间上实施差异化战略的动机.因此,均衡条件下,我们得到同现有大部分文献相异的结论:即企业在横向差异产品空间上的策略符合最小差异原则。

Vertical Differentiation and the Principle of Minimum Horizontal Differentiation in Hotelling's Model

Supposed there is a certain of vertical differentiation between the duopoly in Hotelling's model,we have reached a SPNE in location-price game.As the existence of the vertical differentiation have increased the market power of the firms,and then weakened the firm's motivation of differentiation in the horizontal differentiation product space,we concluded that,in equilibrium,the duopoly's strategy in the horizontal differentiation space is consistent with the principle of minimum differentiation,which is apparently distinguished from the conclusion of all of the presented articles.