concrete example - ruling strategy equilibrium - A player is rational if he/she never chooses a dominant strategy. Also, if every player has a dominant strategy, then the Strategic Profile of the pair is called the dominant strategy equilibrium. In a game with a dominant strategy equilibrium, the dominant strategy equilibrium is realized if all players are rational. - Nash equilibrium - A Nash equilibrium is a combination of strategies in which no player can gain a higher gain by changing his strategy, given the other players’ strategies.
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