Figure 5From: Wave propagation in a diffusive SEIR epidemic model with nonlocal transmission and a general nonlinear incidence rateThe surface of \(c^{*}(d_{2},d_{3})\) for the third model. Let \(\alpha =1\), \(\beta =3\), \(S_{0}=1\), \(\gamma =1.5\), and \(\tau =1\) be fixed. Three surfaces from top to bottom are generated by taking \(\rho =3, 2, 0.2\), respectively. We can see that the surface of \(c^{*}\) increases as ρ increasesBack to article page