Numerical oscillation of nonlinear generalized delay single species population model

Qi Wang; Qian Yang;


In this paper, we mainly consider the oscillation of numerical solutions for a nonlinear delay differential equation which is generalized from a delay Lotka-Volterra type single species population growth model. By studying the corresponding difference scheme of the equation discretized by $\theta$-method, forward Euler method and backward Euler method, some sufficient conditions under which the numerical solutions oscillate are obtained. Furthermore, we prove that the positive non-oscillatory numerical solutions tend to the equilibrium of the original differential equation. Finally, some numerical experiments are given to verify the theoretical results.

Vol. 24 (2023), No. 1, pp. 489-504
DOI: 10.18514/MMN.2023.3616

Download: MMN-3616