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arXiv 1706.05050math.GT
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二维流形边界上具有孤立临界点的函数的拓扑

Topology of Functions with Isolated Critical Points on the Boundary of a 2-Dimensional Manifold

Bohdana I. Hladysh, Aleksandr O. Prishlyak

摘要:

研究了紧致曲面$M$上边界上具有孤立临界点的函数的拓扑等价性问题,这些孤立临界点也是它们对边界的约束的孤立临界点.我们用$Ω(M)$表示这类函数。首先,我们得到了上述函数在其临界点的某个邻域内的拓扑分类。其次,我们从临界水平的邻域构造了一个弦图。还考虑了这种功能的最小数量的临界点。最后,给出了$Ω(M)$中具有三个临界点的函数的全局拓扑等价性判据。

英文摘要:

This paper focuses on the problem of topological equivalence of functions with isolated critical points on the boundary of a compact surface $M$ which are also isolated critical points of their restrictions to the boundary. This class of functions we denote by $Ω(M)$. Firstly, we've obtained the topological classification of above-mentioned functions in some neighborhood of their critical points. Secondly, we've constructed a chord diagram from the neighborhood of a critical level. Also the minimum number of critical points of such functions is being considered. And finally, the criterion of global topological equivalence of functions which belong to $Ω(M)$ and have three critical points has been developed.

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。

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