Strict Equilibrium

A profile $s\in S$ is a strict equilibrium if $$ \{s\}=BR(s). $$ Equivalently, every player's prescribed strategy is the unique best response to the other players' prescribed strategies.

References

• [MFoGT, Def. 4.5.3] Laraki, Renault, and Sorin, Mathematical Foundations of Game Theory. Strict equilibrium as singleton best-response image.