scholarly journals Dynamical analysis of a competition and cooperation system with multiple delays

2018 ◽  
Vol 2018 (1) ◽  
Author(s):  
Xin Zhang ◽  
Zizhen Zhang ◽  
Matthew J. Wade
2020 ◽  
Vol 18 (1) ◽  
pp. 1230-1249
Author(s):  
Zhangzhi Wei ◽  
Xin Zhang

Abstract In this manuscript, we first consider the diffusive competition and cooperation system subject to Neumann boundary conditions without delay terms and get the conclusion that the unique positive constant equilibrium is locally asymptotically stable. Then, we study the diffusive delayed competition and cooperation system subject to Neumann boundary conditions, and the existence of Hopf bifurcation at the positive equilibrium is obtained by regarding delay term as the parameter. By the theory of center manifold and normal form, an algorithm for determining the direction and stability of Hopf bifurcation is derived. Finally, some numerical simulations and summarizations are carried out for illustrating the theoretical analytic results.


2019 ◽  
Vol 354 ◽  
pp. 266-281 ◽  
Author(s):  
M. Prakash ◽  
R. Rakkiyappan ◽  
A. Manivannan ◽  
Jinde Cao

Author(s):  
Xiaochen Mao ◽  
Xiangyu Zhou ◽  
Tiantian Shi ◽  
Lei Qiao

Coupled neuronal networks have received considerable attention due to their important and extensive applications in science and engineering. This paper focuses on the nonlinear dynamics of delay-coupled bidirectional FitzHugh–Nagumo (FHN) neuronal networks through theoretical analysis, numerical computations, and circuit simulations. A variety of interesting dynamical behaviors of the network are explored, such as the coexistence of nontrivial equilibria and periodic solutions, different patterns of coexisting attractors, and even chaotic motions. An electronic circuit is designed and performed to validate the facticity of the complicated behaviors, such as multistability and chaotic attractors. It is shown that the circuit simulations reach an agreement with the obtained results.


2017 ◽  
Vol 15 (1) ◽  
pp. 218-232
Author(s):  
Lin Lu ◽  
Yi Lian ◽  
Chaoling Li

Abstract This paper is concerned with a competition and cooperation model of two enterprises with multiple delays and feedback controls. With the aid of the difference inequality theory, we have obtained some sufficient conditions which guarantee the permanence of the model. Under a suitable condition, we prove that the system has global stable periodic solution. The paper ends with brief conclusions.


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