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arXiv 1505.02404math.DS
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双曲鞍环的盒维数

Box dimension of a hyperbolic saddle loop

Maja Resman

摘要:

作为双曲鞍多环的最简单例子,我们计算了双曲鞍环周围螺旋轨迹的盒维数。在弱焦点和极限环的情况下,Zubrinic和Zupanovic证明了螺旋轨迹的盒维数与这些集合的循环性是双射对应的。我们表明,在鞍环的情况下,盒维数是有关的循环,但对应不是双射。此外,复鞍是弱焦点的复化,也是双曲鞍的复化。计算双曲鞍环的鞍点周围的盒维数有望成为计算共振复鞍点叶理的盒维数的初步方法。

英文摘要:

We compute the box dimension of a spiral trajectory around a hyperbolic saddle loop, as the simplest example of a hyperbolic saddle polycycle. In cases of weak foci and limit cycles, Zubrinic and Zupanovic show that the box dimension of a spiral trajectory is in a bijective correspondence with cyclicity of these sets. We show that, in saddle loop cases, the box dimension is related to the cyclicity, but the correspondence is not bijective. In addition, complex saddles are complexifications of weak foci points, as well as of hyperbolic saddles. Computing the box dimension around the saddle point of a hyperbolic saddle loop is hopefully a preliminary technique for computing the box dimension of leaves of a foliation around resonant complex saddles.

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