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Keywords: SEIR model Fractional differential equations Initial value problem Stability Numerical solutions a b s t r a c t In this paper, we introduce a fractional order SEIR model with vertical transmission within a nonconstant population. We show that the model introduced in this paper has nonnegative solutions. We give a detailed analysis for the(More)
In this paper, we introduce a fractional order SEIR epidemic model with vertical transmission, where the death rate of the population is density dependent, i.e., dependent on the population size. It is also assumed that there exists an infection related death rate. We show the existence of nonnegative solutions of the model, and also give a detailed(More)
In recent years, unmanned aerial vehicles-UAVs represent one of the most demanding technologies in aeronautics, and they have tremendous appeal because of their operability with considerable autonomy (by using minimal human intervention). UAVs have to operate in complex environments with different constraints such as obstacles, threatening zones, UAV(More)
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