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一类含扩散项的时滞偏生态模型解的振动性 被引量:2

Oscillation of Solutions of a Partial Population Equation with Diffusion and Delay
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摘要 研究一类时滞偏生态模型解的振动性,利用平均法,通过使用偏泛函微分方程上、下解思想和泛函微分方程振动性理论,获得了其解的正性和关于正平衡态振动的充分条件,推广了文献的结果,并举例说明了所得结果的意义. By using the upper- and lower- solution method of partial functional differential equations and the oscillation theory of functional differential equation, the oscillation of solutions of a population equation with diffusion and delay is studied and a sufficient condition for all positive solutions of the equation to oscillate about the positive equilibrium is obtained. Some known results are extended. Finally, two models arising from ecology are given to illustrate the obtained results.
作者 王长有
出处 《四川师范大学学报(自然科学版)》 CAS CSCD 北大核心 2008年第2期168-171,共4页 Journal of Sichuan Normal University(Natural Science)
基金 重庆市教委优秀青年基金(D2005-37)资助项目
关键词 时滞 扩散 上、下解 偏生态模型 振动性 Delay Diffusion Upper- and lower- solution Population equation Oscillation
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参考文献14

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二级参考文献33

共引文献37

同被引文献26

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