Nash equilibrium
In game theory, an outcome or set of strategies, one for each player, is in Nash equilibrium if it yields an outcome such that no player can improve her position by unilaterally withdrawing from it. A game may permit several Nash equilibria. In the prisoners' dilemma the strategy that each cheat on the other is, unfortunately, a Nash equilibrium, whereas the socially preferable outcome that each cooperates is not. See also Pareto principle.

Philosophy dictionary. . 2011.

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  • Nash-Equilibrium — Das Nash Gleichgewicht, teils auch (wie im Englischen) Nash Equilibrium genannt, ist ein zentraler Begriff der mathematischen Spieltheorie. Es beschreibt in nicht kooperativen Spielen einen Zustand eines strategischen Gleichgewichts, von dem… …   Deutsch Wikipedia

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  • Nash equilibrium — noun (game theory) a stable state of a system that involves several interacting participants in which no participant can gain by a change of strategy as long as all the other participants remain unchanged • Topics: ↑game theory, ↑theory of games… …   Useful english dictionary

  • Nash equilibrium — noun The set of choices of players strategies for which no player can benefit by changing his or her strategy while the other players keep theirs unchanged …   Wiktionary

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