Evolutionary Stable Strategy of Duopolistic Retailing Market
双寡头零售市场的演化稳定策略

Based on a three-stage Hotelling model, we study the evolutionary stable problem of price strategies in duopolistic retailing market. In the \ linear city game, two firms simultaneously choose their strategic variable in the first stage and determine the levels of their strategic variables and the corresponding probability of their price strategy in the second stage. In the third stage, consumers choose the firms. By using evolutionary game theory, we obtain the result that the High/Low pricing strategy is the unique evolutionary stable strategy.