Positive Periodic Solution for a Two-Species Predator-Prey System

来源 :应用数学(英文) | 被引量 : 0次 | 上传用户:y2228158
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A two-species predator-prey system with time delay in a two-patch environment is investigated. By using a continuation theorem based on coincidence degree theory, we obtain some sufficient conditions for the existence of periodic solution for the system.
其他文献
“Arithmetic Calculus” (AC), introduced recently by the author, is explored further in this paper by giving a new lease of life to the age-old differences tabl
In this paper, we propose random fluctuation on contact and recovery rates in deterministic SIR model with disease deaths in nonparametric manner and derive a n
制备了一种新型的氧卤碲酸盐玻璃:(80-x)TeO2—15ZnCl2-xBaO-5NaF(x=30、20、10、0mol%),对玻璃的机械强度、热稳定性、拉曼光谱、紫外吸收光谱、红外透过光谱等特性进行了研究.通过
The combination of fuzzy logic tools and multi-criteria decision making has a great relevance in literature. Compared with the classical fuzzy number, Z-number
基于立井井筒掘砌过程中,将通过多层表土砂层含水层及基岩段砂岩含水层,经常伴有井壁注浆封堵水施工。重点介绍了在装备后的井筒进行防治水注浆施工前,优化机电辅助系统并进
为降低金红石相纳米TiO2的光催化活性,利用氧化铝对其进行高温掺杂处理.利用X射线衍射、X射线光电子能谱、透射电镜和比表面仪对纳米TiO2进行了表征.结果表明,最佳的煅烧温度是80
As we know if D is a complete X-semilattice of unions then semigroup Bx(D) possesses a right unit iff D is an XI-semilattice of unions. The investigation of tho
采用Glycothermal法制备了尺寸分布窄的准球形钛酸锶钡纳米晶.利用XRD、拉曼光谱以及TEM对合成纳米晶结构及形貌进行了测定与表征,研究了Glycothermal法制备BST纳米晶过程中
We analyze an infinite horizon discrete time inventory model with deterministic but non-stationary demand for a single product at a single stage. There is a fin
履带钻机因其具有井下机动性强、施工效率高等特点,满足煤矿井下安全、高效生产的需求,但受到外型尺寸的制约在一些小断面巷道难以应用,这些中小型矿井依然沿用分体式爬履钻