In game theory an evolutionarily stable set (ES set), sometimes referred to as evolutionary stable sets, is a set of strategies, which score equally against each other, each of which would be an evolutionarily stable strategy (ESS) were it not for the other members of the set. ES sets were first defined by Thomas (1985ab).
References
↑Thomas, B. (1985) On evolutionarily stable sets. Journal of Mathematical Biology22: 105–115.
Further reading
Balkenborg, D. & Schlag, K. H. (2001) Evolutionarily stable sets. International Journal of Game Theory29:571–595.
Thomas, B. (1985a) On evolutionarily stable sets. Journal of Mathematical Biology22:105—115.
Thomas, B. (1985b) Evolutionary stable sets in mixed-strategist models. Theoretical Population Biology28:332–341.