...拓扑度理论,周期解,持续生存,复杂性. [gap=4171]ds】 Impulsive differential equation； Nonautonomous population dynamical system； Theory of topological degree； Periodic solution； Permanence； Complexity；..
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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。
参考来源 - 弹性梁方程边值问题·2,447,543篇论文数据，部分数据来源于NoteExpress
利用拓扑度理论研究了在脉冲条件下这种系统的周期解。
Based on topological degree theory, periodic solutions for this system under impulsive conditions are studied.
本文利用拓扑度理论研究三阶微分系统反周期解的存在性。
Using topological degree the existence of anti-periodic solutions for third order differential systems is studied.
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。
Some efficient tools such as topological degree theory, fixed point theory and lower and upper method have been applied.
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