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第184行： − − 进化均衡策略是纳什平衡的改进式（关于两者的对比，见下一章节）。在纳什平衡中，如果所有参与者都采用各自的策略方案，且都无法通过改用任何其他策略而从中获益。那么在该两人游戏中，我们将此看作一个策略对。令E(S,T)表示策略S对策略T的收益。当且仅当双方都成立且所有T≠S时，策略对（S，S）为该两人游戏中的纳什平衡： − E(S,S) ≥ E(T,S) − − − :E(''S'',''S'') ≥ E(''T'',''S'') +
→Nash equilibrium
An ESS is a refined or modified form of a Nash equilibrium. (See the next section for examples which contrast the two.) In a Nash equilibrium, if all players adopt their respective parts, no player can benefit by switching to any alternative strategy. In a two player game, it is a strategy pair. Let E(S,T) represent the payoff for playing strategy S against strategy T. The strategy pair (S, S) is a Nash equilibrium in a two player game if and only if this is true for both players and for all T≠S:
An ESS is a refined or modified form of a Nash equilibrium. (See the next section for examples which contrast the two.) In a Nash equilibrium, if all players adopt their respective parts, no player can benefit by switching to any alternative strategy. In a two player game, it is a strategy pair. Let E(S,T) represent the payoff for playing strategy S against strategy T. The strategy pair (S, S) is a Nash equilibrium in a two player game if and only if this is true for both players and for all T≠S:
E(S,S) ≥ E(T,S)
E(S,S) ≥ E(T,S)
进化均衡策略是纳什平衡的改进式（关于两者的对比，见下一章节）。在纳什平衡中，如果所有参与者都采用各自的策略方案，且都无法通过改用任何其他策略而从中获益。那么在该两人游戏中，我们将此看作一个策略对。令E(S,T)表示策略S对策略T的收益。当且仅当双方都成立且所有T≠S时，策略对（S，S）为该两人游戏中的纳什平衡：
E(S,S) ≥ E(T,S)
E(S,S) ≥ E(T,S)