Fig. 7.

Trajectories of 30 systems with alternative parameter values. (a) Parameter values $p^{″}=\left({\beta }^{″},{\alpha }^{″},{\gamma }^{″}\right)$ are chosen by perturbing randomly with 10% Gaussian noise from a fixed $p^{\prime }=\left({\beta }^{\prime },{\alpha }^{\prime },{\gamma }^{\prime }\right)=(0.852,0.25,0.4)$. The original trajectory with parameter values $p=(\beta ,\alpha ,\gamma )=(1.1,0.2,0.5)$ is traced in yellow. (b) The same as (a), but the p″ are chosen from the surface (3.8). Specifically, the p″ are formed by perturbing $\left({\alpha }^{″},{\gamma }^{″}\right)$ by 10% and calculating the corresponding β″ lying on the surface. (Color available online.)