Research output: Contribution to journal › Article › peer-review
Knot polynomials of open and closed curves : Knot polynomials of open curves. / Panagiotou, Eleni; Kauffman, Louis H.
In: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 476, No. 2240, 20200124, 01.08.2020.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Knot polynomials of open and closed curves
T2 - Knot polynomials of open curves
AU - Panagiotou, Eleni
AU - Kauffman, Louis H.
N1 - Publisher Copyright: © 2020 The Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/8/1
Y1 - 2020/8/1
N2 - 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.
AB - 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.
KW - Jones polynomial
KW - Kauffman bracket polynomial
KW - knotoids
KW - linking number
KW - links
KW - open knots
KW - SPACE
KW - MECHANICS
KW - ENTANGLEMENT
KW - INVARIANT
KW - SYSTEMS
UR - http://www.scopus.com/inward/record.url?scp=85096568095&partnerID=8YFLogxK
U2 - 10.1098/rspa.2020.0124rspa20200124
DO - 10.1098/rspa.2020.0124rspa20200124
M3 - Article
AN - SCOPUS:85096568095
VL - 476
JO - Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
JF - Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
SN - 1364-5021
IS - 2240
M1 - 20200124
ER -
ID: 26082839