郑丽丽, 郭红建. 带有扩散和时滞的捕食与被捕食模型的稳定性与Hopf分支[J]. 信阳师范学院学报(自然科学版), 2005, 18(3): 252-255.
引用本文: 郑丽丽, 郭红建. 带有扩散和时滞的捕食与被捕食模型的稳定性与Hopf分支[J]. 信阳师范学院学报(自然科学版), 2005, 18(3): 252-255.
ZHENG Li-li, GUO Hong-jian. Stability and Hopf bifurcation of a predator-prey model with time delay and dispersion[J]. Journal of Xinyang Normal University (Natural Science Edition), 2005, 18(3): 252-255.
Citation: ZHENG Li-li, GUO Hong-jian. Stability and Hopf bifurcation of a predator-prey model with time delay and dispersion[J]. Journal of Xinyang Normal University (Natural Science Edition), 2005, 18(3): 252-255.

带有扩散和时滞的捕食与被捕食模型的稳定性与Hopf分支

Stability and Hopf bifurcation of a predator-prey model with time delay and dispersion

  • 摘要: 本文考虑一类带有扩散和时滞的捕食与被捕食模型,分析了系统的非负不变性,边界平衡点性质及全局稳定性.在这一系统中,当时滞τ=τ1+τ2适当小时,正平衡点是局部渐近稳定的,随着时滞的增加,正平衡点由稳定变为不稳定,系统在平衡点附近发生Hopf分支.

     

    Abstract: A system of retarded functional differential equations is proposed as a predator-prey model with time delay in two-patches. The invariance of non-negativity,nature of boundary equilibria and global stability are analyzed.We show that positive equilibrium is locally asymptotically stable when time dalays τ=τ_1+τ_2 is suitable small, while a loss of stability by a Hopf bifurcation can occur as the delays increase.

     

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