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Epsilon-equilibrium
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<p>In <a href="/facts/Game_theory/zkEIj1ya">game theory</a>, an epsilon-equilibrium, or near-Nash equilibrium, is a <a href="/facts/Strategy_profile/VEXD1jyj">strategy profile</a> that approximately satisfies the condition of <a href="/facts/Nash_equilibrium/l74xzIHd">Nash equilibrium</a>. In a Nash equilibrium, no player has an incentive to change his behavior. In an approximate Nash equilibrium, this requirement is weakened to allow the possibility that a player may have a small incentive to do something different. This may still be considered an adequate solution concept, assuming for example <a href="/facts/Status_quo_bias/E2Wxx5IK">status quo bias</a>. This solution concept may be preferred to Nash equilibrium due to being easier to compute, or alternatively due to the possibility that in games of more than 2 players, the probabilities involved in an exact Nash equilibrium need not be <a href="/facts/Rational_numbers/VJQmyY05">rational numbers</a>. </p>