Figure 4
Areas of the parameter space where cooperation can fixate with higher than random probability. The areas of cooperator and defector dominance with different relinking rules. Sophisticated relinking rules extend the region where cooperation becomes dominant. The parameter space is shown for the benefit of cooperation (b) vs. the assortatitvity (ω 2 ) a. ⟨k⟩ = 4, b. ⟨k⟩ = 8. c = 1, ω 1 = 0.05 and w = 0.01 in all cases. Squares random relinking; circles "Get rid of defectors"; triangles "The friend of my friend is my friend". A bold letter D shows the area where defectors dominate and a bold letter C where cooperators dominate.