arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1712.03212math.DS
收藏

四维系统中的同宿鞍到鞍焦点跃迁

Homoclinic saddle to saddle-focus transitions in 4D systems

Manu Kalia, Yuri A. Kuznetsov, Hil G. E. Meijer

摘要:

分析了当稳定的前导特征空间为三维时的鞍点到鞍焦点的同宿跃迁(称为3DL分岔)。这里一对复特征值和一个实特征值交换了它们相对于虚轴的位置,产生了一个三维稳定的前导特征空间。这种过渡不同于标准的Belyakov分叉,在标准的Belyakov分叉中,双实特征值分裂成一对复共轭特征值或两个不同的实特征值。在野生的情况下,我们得到的余维1和2分歧曲线和点,渐近接近3DL歧点,并具有不同于标准Belyakov情况下的结构。我们还给出了一个例子,这种分歧的野生情况下发生在扰动Lorenz-Stenflo四维常微分方程模型。

英文摘要:

A saddle to saddle-focus homoclinic transition when the stable leading eigenspace is 3-dimensional (called the 3DL bifurcation) is analyzed. Here a pair of complex eigenvalues and a real eigenvalue exchange their position relative to the imaginary axis, giving rise to a 3-dimensional stable leading eigenspace. This transition is different from the standard Belyakov bifurcation, where a double real eigenvalue splits either into a pair of complex-conjugate eigenvalues or two distinct real eigenvalues. In the wild case, we obtain sets of codimension 1 and 2 bifurcation curves and points that asymptotically approach the 3DL bifurcation point and have a structure that differs from that the standard Belyakov case. We also give an example of this bifurcation in the wild case occuring in a perturbed Lorenz-Stenflo 4D ODE model.

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。

↑