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- In this paper, a class of predator-prey diffusive system of two species with time delay and ratio is studied by the using of coincidence degree theory. 摘要本文研究了一类具有时滞和比率的两种群捕食者-食饵扩散系统。应用重合度理论。得出了该系统正周期存在性与扩散系数无关的新结果。
- theory of coincidence degree 重合度
- A delayed nonautonomous ratio-dependent predator-prey system is investigated. By using the continuation theorem of coincidence degree theory, sufficient conditions are derived for the existence of periodic solution in the system. 研究了一类基于比率和具有时滞的非自治的捕食者食饵系统。利用重合度理论,得到了该系统周期解存在性的充分条件。
- The continuation theorem of coincidence degree theory and analysis techniques are applied to study the existence and global exponential stability of periodic solutions of BAM neural networks with distributed delays. 摘要讨论了具有分布时滞的双向联想记忆(BAM)神经网络的动力学行为。利用迭合度理论的延拓定理和分析技巧,得到了周期解的存在性和全局稳定性的充分条件,对设计这种类型的神经网络具有重要意义。
- In this paper, using the continuation of coincidence degree theory, we obtain sufficent conditions for the existence of four periodic solutions of the delayed predator-prey system. 摘要文章利用重合度理论中的延拓定理,得到一类具一般时滞离散捕食-被捕食系统四正周期解的存在性的充分条件。
- Sufficient conditions are obtained for the global existence of a positive periodic solution of periodic neutral delay predator-prey system by using the method of coincidence degree theory. 利用重合度理论建立了一类周期中立型时滞捕食者-食饵系统正周期解的全局存在性的充分条件.
- Einstein put forward his new theory of relativity. 爱因斯坦提出了相对论的新学说。
- Einstein's theory of relativity. 爱因斯坦的相对论。
- Do you agree to the wave theory of light? 你同意光的波动理论吗?
- God, the creator, is control of coincidence. 巧合,其实是造物主的化身。
- He cavalierly dismisses the theory of both Freud and Jung. 他傲慢武断地斥贬佛洛依德和杨格二人的理论。
- Darwin put forth the theory of evolution,. 达尔文提出了进化论。
- Mary and Jack separated. But the long arm of coincidence brought them together a week later. 玛丽和杰克分手了。可是一星期后,由于意外的巧合国。他们又聚到了一起。
- Using the Index of Coincidence to identify Open Reading Frames. 使用偶合指数方法来定出开放阅读框架。
- Not everyone can understand Einstein's Theory of Relativity. 不是每个人都能读懂爱因斯坦的相对论的。
- Darwin spend more than twenty year work on his theory of evolution. 达尔文花了二十余年时间研究他的进化论。
- He discoursed impressively on Newton's theory of gravity. 他讲述了牛顿的引力定律,给人以深刻的印象。
- That egghead published a new theory of matter last month. 那位知识分子上个月发表了一个新的物质论。
- Do you know who originated the theory of quantum? 你知道量子论是由谁首创的吗?
- An example is the kinetic theory of gases. 一个例子是气体的运动理论。