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arXiv 1812.03390math.GT
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卫星和配套结的主干

Trunk of Satellite and Companion Knots

Nithin Kavi, Wendy Wu, Zhenkun Li

摘要:

我们研究的结不变量称为树干,定义的小泽,和一个卫星结的树干与它的同伴结的树干的关系。我们的第一个结果是${\rm trunk}(K) \geq n \cdot {\rm trunk}(J)$,其中${\rm trunk}(\cdot)$表示结的主干,$K$是具有伴随$J$的卫星结,$n$是$K$的卷绕数。为了将卷绕数升级为缠绕数,我们用$m$表示,我们必须在我们的第二个结果${\rm trunk}(K) > \frac{1}{2} m\cdot {\rm trunk}(J)$中包括一个额外的因子$\frac{1}{2}$,因为$m \geq n$。我们还讨论了第二个结果的推广。

英文摘要:

We study the knot invariant called trunk, as defined by Ozawa, and the relation of the trunk of a satellite knot with the trunk of its companion knot. Our first result is ${\rm trunk}(K) \geq n \cdot {\rm trunk}(J)$ where ${\rm trunk}(\cdot)$ denotes the trunk of a knot, $K$ is a satellite knot with companion $J$, and $n$ is the winding number of $K$. To upgrade winding number to wrapping number, which we denote by $m$, we must include an extra factor of $\frac{1}{2}$ in our second result ${\rm trunk}(K) > \frac{1}{2} m\cdot {\rm trunk}(J)$ since $m \geq n$. We also discuss generalizations of the second result.

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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