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arXiv 1503.07617math.DSmath.CA
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无穷远处的Hopf分支与平面的耗散向量场

Hopf bifurcation at infinity and dissipative vector fields of the plane

Begoña Alarcón, Roland Rabanal

摘要:

在不假设连续可微性的情况下,描述了一类在无穷远处具有Hopf分支的可微向量场.这些向量场在平面上具有孤立奇点,初始族是通过对一个具有谱性质(如耗散性)的向量场在无穷远处的特殊扰动得到的。利用了可微向量场中的谱条件所施加的强控制,然后我们不应用标准的Poincaré紧化.此外,还考虑了具有整体周期环的平面系统的摄动问题。

英文摘要:

We describe some families of differentiable vector fields with the Hopf bifurcation at infinity, without assuming the continuous differentiability. These vector fields have isolated singular points on the plane, and the initial families are obtained by special perturbations at infinity of a vector field with some spectral property, for instance the dissipativity. The strong domination imposed by the spectral condition in the differentiable vector field is used, and then we do not apply the standard Poincaré compactification. Moreover, the perturbation of planar systems with a global period annulus is also considered.

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