$S^2$和旋转数的非平凡吸引-排斥映射
Nontrivial attractor-repellor maps of $S^2$ and rotation numbers
摘要:
本文考虑$S^2$的保向同胚$h$,它有一个排斥子$\infty$和一个吸引子$-\infty$,它不是南北映射,使得$\infty$和$-\infty$的盆相交.我们研究了$h:S^2\setminus\{\pm\infty\}\to S^2\setminus\{\pm\infty\}$旋转数的各个方面,特别是它与周期轨道存在性的关系。
英文摘要:
We consider an orientation preserving homeomorphism $h$ of $S^2$ which admits a repellor denoted $\infty$ and an attractor $-\infty$, which is not a North-South map, such that the basins of $\infty$ and $-\infty$ intersect. We study various aspects of the rotation number of $h:S^2\setminus\{\pm\infty\}\to S^2\setminus\{\pm\infty\}$, especially its relationship with the existence of periodic orbits.
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