arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1509.04570math.DSq-bio.NC
收藏

广义Lotka-Volterra系统的二维异宿吸引子

Two dimensional heteroclinic attractor in the generalized Lotka-Volterra system

Valentin S. Afraimovich, Gregory Moses, Todd R. Young

摘要:

我们研究一个简单的动力学模型,表现出序列动力学。我们发现,在这个模型中存在的参数值集的循环链的鞍平衡,$O_k$,$k=1, \ldots, p$,有二维非稳定流形,包含轨道连接每个$O_k$到下两个平衡点$O_{k+1}$和$O_{k+2}$链($O_{p+1} = O_1$)。我们发现,这些平衡点和他们的非稳定流形的工会形成一个$2$维表面的边界是同胚的圆柱,如果$p$是偶数和默比乌斯带如果$p$是奇数。如果,进一步,链中的每个平衡满足一个称为“耗散性”的条件,那么这个曲面是渐近稳定的。

英文摘要:

We study a simple dynamical model exhibiting sequential dynamics. We show that in this model there exist sets of parameter values for which a cyclic chain of saddle equilibria, $O_k$, $k=1, \ldots, p$, have two dimensional unstable manifolds that contain orbits connecting each $O_k$ to the next two equilibrium points $O_{k+1}$ and $O_{k+2}$ in the chain ($O_{p+1} = O_1$). We show that the union of these equilibria and their unstable manifolds form a $2$-dimensional surface with boundary that is homeomorphic to a cylinder if $p$ is even and a Möbius strip if $p$ is odd. If, further, each equilibrium in the chain satisfies a condition called ``dissipativity," then this surface is asymptotically stable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑