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arXiv 2004.10013math.GT
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完全图上Conway-Gordon定理的推广和内禀连通性

Generalization of the Conway-Gordon theorem and intrinsic linking on complete graphs

Hiroko Morishita, Ryo Nikkuni

摘要:

Conway和Gordon证明了对于每个顶点数为6的空间完全图,其所有组成的二分量链的环绕数之和为奇数; Kazakov和Korablev证明了对于任意顶点数大于6的空间完全图,其所有组成的二分量哈密尔顿链的环绕数之和为偶数。本文证明了对于顶点数大于6的空间完全图,所有二分量Hamilton链上的环绕数的平方和都是由所有三角形-三角形组成链上的和来确定的.作为应用,我们证明了如果顶点数足够大,则每个空间完全图都包含一个二分量Hamilton链,其环绕数的绝对值是任意大的.最后给出了直线空间完全图的一些应用。

英文摘要:

Conway and Gordon proved that for every spatial complete graph on six vertices, the sum of the linking numbers over all of the constituent two-component links is odd, and Kazakov and Korablev proved that for every spatial complete graph with arbitrary number of vertices greater than six, the sum of the linking numbers over all of the constituent two-component Hamiltonian links is even. In this paper, we show that for every spatial complete graph whose number of vertices is greater than six, the sum of the square of the linking numbers over all of the two-component Hamiltonian links is determined explicitly in terms of the sum over all of the triangle-triangle constituent links. As an application, we show that if the number of vertices is sufficiently large then every spatial complete graph contains a two-component Hamiltonian link whose absolute value of the linking number is arbitrary large. Some applications to rectilinear spatial complete graphs are also given.

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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