Figure 1. Repeated prisoner's dilemma: Average abundance in stationarity.

Panel A shows uniform mutations, and Panel B shows the results for the bitwise kernel. Continuous lines represent the theoretical approximation. Dots represent simulation results averaged over 500 repetitions of generations each, and a mutation probability . Plus signs represent a larger mutation probability, . In this case of larger , which is harder to address analytically, the mutation kernel also affects the average abundance. Values for the game are , , , . The continuation probability is , and population size is .