Let's start by plotting my expected payoff from choosing the strategy Up.

我先把选上的预期收益,标注出来

耶鲁公开课 - 博弈论课程节选

When distinguishing a particular strategy from the set of possible strategies.

当需要表示策略集合中的,一个特定策略时

耶鲁公开课 - 博弈论课程节选

So the first lesson of the class, and there are going to be lots of lessons, that emerges immediately from the definition of a dominated strategy and it's this.

这节课的第一个结论,以后我们会总结更多的结论,从严格优势博弈概念里总结出来的,结论是这样的

耶鲁公开课 - 博弈论课程节选

So strategy ?i is a best response to the strategy S-i of the other players if my payoff from choosing ?i against S-i, is weakly bigger than that from choosing Si' against S- i, and this better hold for all possible other strategies I could choose.

策略?i是其他参与人策略S-i的,最佳对策,如果此时我选?i的收益,弱优于此情况下选Si'的收益,这对于所有我可以选择的策略都成立

耶鲁公开课 - 博弈论课程节选