本文研究了移动环境下一类具有时滞的Lotka-Volterra合作系统行波解的存在性。利用单调迭代方法,通过构造合适的上下解,证明了当环境运动速度c>max{ c1∗,c2∗}时,系统连接两边界平衡点的行波解的存在性。Existence of traveling wave ...本文研究了移动环境下一类具有时滞的Lotka-Volterra合作系统行波解的存在性。利用单调迭代方法,通过构造合适的上下解,证明了当环境运动速度c>max{ c1∗,c2∗}时,系统连接两边界平衡点的行波解的存在性。Existence of traveling wave front solutions is established for diffusive and cooperative Lotka-Volterra system with delays in a shifting environment. Using the method of monotone iteration and by constructing appropriate upper and lower solutions, it is proven that when the environmental movement speed is c>max{ c1∗,c2∗}, there exist traveling wave solutions that connect the boundary equilibrium points of the system.展开更多
为了描述移动环境轻度恶化对两个弱合作物种的持久性产生的影响,本文考虑一类带有与时空均相关的恒正内禀增长函数的格上Lotka-Volterra合作系统。通过构造合适的上下解并结合单调迭代的方法证明了系统存在两组受迫行波解。In order to ...为了描述移动环境轻度恶化对两个弱合作物种的持久性产生的影响,本文考虑一类带有与时空均相关的恒正内禀增长函数的格上Lotka-Volterra合作系统。通过构造合适的上下解并结合单调迭代的方法证明了系统存在两组受迫行波解。In order to characterize the effect of mild deterioration of the shifting environment on the two weakly cooperative species persistence, we consider a class of the lattice Lotka-Volterra cooperative systems with a constant positive intrinsic growth function that is spatio-temporally correlated. By constructing suitable upper and slower solutions combined with the method of monotone iteration, we prove that there exist two sets of forced traveling wave solutions for the system.展开更多
考虑在移动环境下局部扩散三种群Lotka-Volterra竞争合作系统行波解的存在性,并假设此系统的内禀增长率函数恒大于某正常数。通过构造一对有序的上下解并利用单调迭代技巧和波动引理,证明了系统的非负受迫行波的存在性。We consider the...考虑在移动环境下局部扩散三种群Lotka-Volterra竞争合作系统行波解的存在性,并假设此系统的内禀增长率函数恒大于某正常数。通过构造一对有序的上下解并利用单调迭代技巧和波动引理,证明了系统的非负受迫行波的存在性。We consider the existence of traveling wave solutions for Lotka-Volterra competitive-cooperative system with three-species under a shifting habitat, and assume that the intrinsic growth rate functions of this system are greater than the normal numbers. We prove the existence of non-negative forced traveling waves of the system by constructing a pair of upper and lower solutions and using monotonic iterative techniques and the fluctuation lemma.展开更多
文摘本文研究了移动环境下一类具有时滞的Lotka-Volterra合作系统行波解的存在性。利用单调迭代方法,通过构造合适的上下解,证明了当环境运动速度c>max{ c1∗,c2∗}时,系统连接两边界平衡点的行波解的存在性。Existence of traveling wave front solutions is established for diffusive and cooperative Lotka-Volterra system with delays in a shifting environment. Using the method of monotone iteration and by constructing appropriate upper and lower solutions, it is proven that when the environmental movement speed is c>max{ c1∗,c2∗}, there exist traveling wave solutions that connect the boundary equilibrium points of the system.
文摘为了描述移动环境轻度恶化对两个弱合作物种的持久性产生的影响,本文考虑一类带有与时空均相关的恒正内禀增长函数的格上Lotka-Volterra合作系统。通过构造合适的上下解并结合单调迭代的方法证明了系统存在两组受迫行波解。In order to characterize the effect of mild deterioration of the shifting environment on the two weakly cooperative species persistence, we consider a class of the lattice Lotka-Volterra cooperative systems with a constant positive intrinsic growth function that is spatio-temporally correlated. By constructing suitable upper and slower solutions combined with the method of monotone iteration, we prove that there exist two sets of forced traveling wave solutions for the system.
文摘考虑在移动环境下局部扩散三种群Lotka-Volterra竞争合作系统行波解的存在性,并假设此系统的内禀增长率函数恒大于某正常数。通过构造一对有序的上下解并利用单调迭代技巧和波动引理,证明了系统的非负受迫行波的存在性。We consider the existence of traveling wave solutions for Lotka-Volterra competitive-cooperative system with three-species under a shifting habitat, and assume that the intrinsic growth rate functions of this system are greater than the normal numbers. We prove the existence of non-negative forced traveling waves of the system by constructing a pair of upper and lower solutions and using monotonic iterative techniques and the fluctuation lemma.
