Now to make that lower-of-the-two-prices comment a little bit more rigorous, let's figure out what the demand actually is for these firms.

为了说明两者价格较低者,具体是什么意思,先来解决这些公司真正的需求量是什么

耶鲁公开课 - 博弈论课程节选

Again, so as we don't get confused, normally we use S for strategy, but let's use P since they're prices.

为了避免混淆,通常我们用S表示策略,但是这次我们使用P,因为它代表价格

耶鲁公开课 - 博弈论课程节选