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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。
- 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.
- coincidence degree theory 重合度理论
- A new existence theorem is obtained by applying the degree theory on cone. 利用锥上的度数理论获得了一个新的存在定理。
- COINCIDENCE DEGREE EOR SOME FUZZY MAPPINGS 一些Fuzzy映象的重合度
- Some efficient tools such as topological degree theory, fixed point theory and lower and upper method have been applied. 使用的主要方法有锥上的不动点理论、拓扑度理论和上下解方法等。
- Based on the explosive stress propagation theory and Greffiss rupture crash degree theory, the maxium detonation dose per time is deduced. 根据爆炸应力传播理论和格里菲斯断裂破损度理论，反算最大一次起爆药量；
- The researching methods of BVP of difference equations can trace back to those of differential equations. So far many methods and skills have been accepted, such as: critical point theory ,fixed point theory, topological degree theory. 差分方程边值问题的研究来源于微分方程边值问题的研究方法，微分方程边值问题的研究已经有许多方法和技巧，例如：临界点理论、不动点理论、拓扑度理论等等。
- By using the continuation theorem of topology degree theory and properties of nonsingular M-matrix, we obtain sufficient conditions for the existence of positive periodic solutions of this system. 利用拓扑度理论中的连续定理以及M-矩阵的性质获得了该系统正周期解存在的充分条件。
- That was a really creepy coincidence. 那样的巧合实在太离奇了。
- theory of coincidence degree 重合度
- By coincidence, we arrived here at the same time. 我们凑巧一同到达这儿。
- Hello there, what a coincidence! 你好，真巧啊！
- Each of the components is useful in its degree. 每一个元件都各有程度不同的用处。
- Criticism is not lost on you to some degree. 在某种程度上，批评对你起了作用。
- An honorary degree was conferred on Mr.Jones. 琼斯先生被授予一个荣誉学位。
- If it isn't my old friend Bob Thomson what a coincidence! 这不是我的老朋友鲍勃·汤姆森吗－－真巧哇！
