Epsilon-equilibrium

Epsilon-equilibrium, often denoted as ε-equilibrium, is a concept used in game theory, particularly in the context of non-cooperative games. It extends the idea of Nash equilibrium by allowing for a tolerance level, ε, that accounts for the possibility of small deviations from optimal play by players in the game. In a standard Nash equilibrium, each player's strategy is a best response to the strategies chosen by the other players.