A Consistent Discrete Version of a Non - Autonomous Sirvs Model
نویسنده
چکیده
A discrete non-autonomous SIRVS model with general incidence is obtained from a continuous model by applying Mickens non-standard discretization method. Conditions for the permanence and extinction of the disease and the stability of diseasefree solutions are obtained. It is also proved that, if the time step is sufficiently small, when we obtain extinction (respectively permanence) for the continuous model we also obtain extinction (respectively permanence) for the corresponding discrete model. An example showing the relevance of the consistency result is presented and numerical simulations are carried out to illustrate our findings.
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