| (Normal form) trembling hand perfect equilibrium | |
|---|---|
| Solution concept in game theory | |
| Relationship | |
| Subset of | Nash Equilibrium |
| Superset of | Proper equilibrium |
| Significance | |
| Proposed by | Reinhard Selten |
In game theory, trembling hand perfect equilibrium is a type of refinement of a Nash equilibrium that was first proposed by Reinhard Selten.[1] 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.