n by Ax =x(1 — x)((a(n)— c(n)fx + [b(n)— d(n)1(1 — x))/ii.• (124) which is presented in the main text as Eq. (27). References Axelrod. K.. 1954. the Evolution of Cooperation. Basic Books. New York. NY. Revised edition published in 2006. Cressman. R. 2005. Evolutionary Dynamics and Extensive Form Games. MIT Press. Cambr