Fractional order prey-predator model incorporating immigration on prey:Complexity analysis and its control  

作　　者：Md.Jasim Uddin Chandra Nath Podder 

机构地区：[1]Departmentof Mathematics University of Dhaka,Dhaka-1000,Bangladesh

出　　处：《International Journal of Biomathematics》2024年第5期285-317,共33页生物数学学报（英文版）

摘　　要：In this paper,the Caputo fractional derivative is assumed to be the prey-predator model.In order to create Caputo fractional differential equations for the prey-predator model,a discretization process is first used.The fixed points of the model are categorized topologically.We identify requirements for the fixed points of the suggested prey-predator model's local asymptotic stability.We demonstrate analytically that,under specific parametric conditions,a fractional order prey-predator model supports both a Neimark-Sacker(NS)bifurcation and a Flip bifurcation.We present evidence for NS and Flip bifurcations using central manifold and bifurcation theory.The parameter values and the initial conditions have been found to have a profound impact on the dynamical behavior of the fractional order prey-predator model.As the bifurcation parameter is increased,the system displays chaotic behavior.Numerical simulations are shown to demonstrate chaotic behaviors like bifurcations,phase portraits,invariant closed cycles,and attractive chaotic sets in addition to validating analytical conclusions.The suggested prey-predator dynamical system's chaotic behavior will be controlled by the OGY and hybrid control methodology,which will also visualize the chaotic state for various biological parameters.

关 键 词：Prey-predator model Caputo fractional derivative Flip and Neimark-Sacker(NS)bifurcations IMMIGRATION chaos control numerical simulation 

分 类 号：O17[理学—数学]