The warping polynomial of a knot diagram

The warping polynomial of a knot diagram
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DOI:
10.1142/s0218216512501246
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发表时间:
2011-09
期刊:
arXiv: Geometric Topology
影响因子:
--
通讯作者:
Ayaka Shimizu
Ayaka Shimizu
中科院分区:
其他
文献类型:
--
作者:
Ayaka Shimizu

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我们引入了有向结图的翘曲多项式。本文刻画了纽结的翘曲多项式,并将纽结的跨度定义为纽结的所有图的翘曲多项式的最小跨度。我们证明了一个纽结的跨度是1当且仅当它是非平凡的交错的,并给出了跨度与非交错数之间的一个不等式。
We introduce the warping polynomial of an oriented knot diagram. In this paper, we characterize the warping polynomial, and define the span of a knot to be the minimal span of the warping polynomial for all diagrams of the knot. We show that the span of a knot is one if and only if it is non-trivial and alternating, and we give an inequality between the span and the dealternating number.