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
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影响因子:
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通讯作者:
Ayaka Shimizu
中科院分区:
文献类型:
--
作者:
Ayaka Shimizu
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.