Global Stability Analysis and Optimal Control of a Harvested Ecoepidemiological Prey Predator Model with Vaccination and Taxation

Figure 4

Phase portrait (𝑌-𝑃-𝐼 space) of model system (20) with 𝜎_𝛿=1.0653 and 𝑢_1𝛿=0.483 and differential initial values, which indicates model system (20) is globally stable around 𝑀^∗(0.5648,0,0.9406,0.0501).