Trembling hand perfect equilibrium

(Normal form) trembling hand perfect equilibrium
Solution concept in game theory
Relationship
Subset ofNash Equilibrium
Superset ofProper equilibrium
Significance
Proposed byReinhard Selten

In game theory, trembling hand perfect equilibrium is a type of refinement of a Nash equilibrium that was first proposed by Reinhard Selten. A trembling hand perfect equilibrium is an equilibrium that takes the possibility of off-the-equilibrium play into account by assuming that the players, through a "slip of the hand" or tremble, may choose unintended strategies, albeit with negligible probability.

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