COVID-19 potentially threatens the lives and livelihood of people all over the world. The
disease is presently a major health concern in Ghana and the rest of the world. Although …

This work examines the impact of various non-pharmaceutical control measures
(government and personal) on the population dynamics of the novel coronavirus disease …

The SIR epidemic model with delay in the context of the fractional derivative with Mittag–
Leffler kernel has been considered. The Atangana–Baleanu fractional derivative is a non …

In this work, a fractional predator-prey model with the harvesting rate is considered. Besides
the existence and uniqueness of the solution to the model, local stability and global stability …

In this work, we develop and analyze a mathematical model for the dynamics of COVID‐19
with re‐infection in order to assess the impact of prior comorbidity (specifically, diabetes …

Overall objectives of this paper are to investigate and analyze certain problems in
economics by means of non-local fractional operators involving Caputo, Caputo–Fabrizio in …

In this paper, an Ensemble of Kalman filter (EnKf) approach is developed to estimate
unmeasurable state variables and unknown parameters in a COVID-19 model. We first …

This research focuses on the characterization of the chaotic behaviors, the hyperchaotic
behaviors, and the impact of the fractional-order derivative in a class of fractional chaotic …

Numerical discretization for the fractional differential equations is applied to the chaotic
financial model described by the Caputo derivative. The graphical representations to …

In this paper, we consider a new fractional-order chaotic system described by the Caputo
fractional derivative. This paper's main objective is to analyze the bifurcation maps to detect …