Figure 1
From: A regime-switching SIR epidemic model with a ratio-dependent incidence rate and degenerate diffusion
The solution (St, It, r(t)) of model (1.4) is ergodic. The figures on the left are the Markov chain, and the figures on the right are the probability density functions of model (1.4) with the initial value (S0, I0) = (0.3, 0.2) for i ∈ \({\mathbb{S}}\) = {1, 2}. The intensities of the noises are chosen as \({\sigma }_{1}^{2}=0.4\), \({\sigma }_{2}^{2}=0.2\).
