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. 2011 Oct 25;6(10):e25496. doi: 10.1371/journal.pone.0025496

Figure 6. The approximate representative of the threshold PGG by a class of power functions.

Figure 6

(Upper-left) Inline graphic where Inline graphic, Inline graphic, and Inline graphic. (Upper-right) the ESS and the unstable minimum as the functions of parameter Inline graphic. They are getting closer and closer with increasing Inline graphic. (Lower) the adaptive landscapes when Inline graphic, and Inline graphic, Inline graphic, Inline graphic, and Inline graphic. Inline graphic is an ESS which sits at the top of the adaptive landscape. Inline graphic is an unstable minimum at the bottom of the adaptive landscape. Parameters: Inline graphic, and Inline graphic.