Knot polynomials of open and closed curves
Knot polynomials of open and closed curves
复制标题
开曲线和闭曲线的结多项式
DOI:
10.1098/rspa.2020.0124
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Kauffman, Louis H.
中科院分区:
文献类型:
--
作者:
Panagiotou, Eleni;Kauffman, Louis H.
In this manuscript, we introduce a method to measure entanglement of curves in 3-space that extends the notion of knot and link polynomials to open curves. We define the bracket polynomial of curves in 3-space and show that it has real coefficients and is a continuous function of the curve coordinates. This is used to define the Jones polynomial in a way that it is applicable to both open and closed curves in 3-space. For open curves, the Jones polynomial has real coefficients and it is a continuous function of the curve coordinates and as the endpoints of the curve tend to coincide, the Jones polynomial of the open curve tends to that of the resulting knot. For closed curves, it is a topological invariant, as the classical Jones polynomial. We show how these measures attain a simpler expression for polygonal curves and provide a finite form for their computation in the case of polygonal curves of 3 and 4 edges.
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DOI:
10.1090/s0002-9939-1987-0894448-2
发表时间:
1987-04
期刊:
arXiv: Cosmology and Nongalactic Astrophysics
影响因子:
--
作者:
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DOI:
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2.1
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发表时间:
2010
期刊:
影响因子:
--
作者:
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DOI:
10.1098/rspa.2007.0174
发表时间:
2008-02
期刊:
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
影响因子:
--
作者:
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通讯作者:
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