Figure 3
From: Rich dynamics of a delayed SIRS epidemic model with two-age structure and logistic growth
(a): The asymptotical stability of \(E_{\ast}\) in (i) of Theorem 5.4 for Case (II). (b): The stable distributions of \(i(t,a)\) and \(r(t,a)\) in Case (II). (c): The relationship between \(R_{0}\) and \(\tau _{1}\). (d): The asymptotical stability of \(E_{\ast}\) in (ii) of Theorem 5.4 for Case (II). (e): The Hopf bifurcation result in Case (II). (f): The periodic distributions for \(i(t,a)\) and \(r(t,a)\) at \(E_{\ast}\) in Case (II)