2023

Fractals

Rocznik: 2023 | Tom: vol. 31 | Numer: no. 2

artykuł naukowy

angielski

EN The human immunodeficiency virus (HIV) is a major global public health issue andcauses millions of deaths around the globe. The most severe phase of HIV infection is known as AIDS. In recent years, a number of mathematical models based on classical integer-order derivative have been developed to analyze the insight dynamics of HIV/AIDS. This paper presents the transmission dynamics of HIV/AIDS using fractional order and a fractal-fractional order compartmental model with the power-law kernel. In the first phase, the proposed model is formulated using the Caputo type fractional derivative. The basic properties such as the solution positivity and existence as well as uniqueness of the fractional model are presented. The equilibria and the basic reproductive numer R0 are evaluated. Further, using fractional stability concepts the stability of the model (both local and global) around the equilibrium is presented in the disease-free case. In addition, the fractional model is solved numerically, and the graphical results with many values of q1 are shown. In the second phase, the concept of a fractal-fractional operator is applied to obtain amore generalized model that addresses the dynamics of HIV/AIDS. The uniqueness and existence of the solutions of the fractal-fractional based model is shown via the Picard-Lindel of approach while the modified Adams-Bashforth method is utilized to present the numerical solution. Detailed numerical simulations are presented for various values fractional as well as the fractal orders q1 and q2 respectively. The graphical results reveal that the fractal-fractional based model provides biologically more feasible results than the models in fractional and classical integer-order cases.

2340015-1 - 2340015-20

10.1142/S0218348X23400157

https://www.worldscientific.com/doi/epdf/10.1142/S0218348X23400157

Article Number: 2340015

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