摘要
在不变边际成本的同质产品伯川德价格博弈中 ,通常认为唯一均衡结果是各个企业获得零利润的纯战略纳什均衡。本文的研究表明 ,存在使企业获得正利润的混合战略纳什均衡 ,并给出了能够保证零利润伯川德博弈结果的条件。此外 ,还存在一种 ε均衡 ,使企业获得 (相对于 ε的 )较高的正利润。
It's commonly viewed as the only equilibrium outcome that each firm earns zero profit in the homogeneous product Bertrand game with constant marginal cost. This paper shows that there exist mixed srategy equilibria satisfying that each firm can earn positive profits, as well as giving the conditions that guarantee the zero profit outcome. Besides, this paper shows an ε-equilibria which make firms earn large profits relative to ε.
出处
《预测》
CSSCI
2000年第6期57-59,49,共4页
Forecasting
关键词
伯川德博弈
价格竞争
混合战略纳什均衡
ε均衡
Bertrand game
pricing competition
mixed strategy equilibrium
ε-equilibrium
