释义 |
Kauffman Polynomial FA semi-oriented 2-variable Knot Polynomial defined by
| (1) |
where is an oriented Link Diagram, is the Writhe of , is the unoriented diagramcorresponding to , and is the Bracket Polynomial. It was developed by Kauffman by extending the BLM/Ho Polynomial to two variables, and satisfies
| (2) |
The Kauffman Polynomial is a generalization of the Jones Polynomial since it satisfies
| (3) |
but its relationship to the HOMFLY Polynomial is not well understood. In general, it has more terms than theHOMFLY Polynomial, and is therefore more powerful for discriminating Knots. It is a semi-orientedPolynomial because changing the orientation only changes by a Power of . In particular, suppose is obtained from by reversing the orientation of component , then
| (4) |
where is the Linking Number of with (Lickorish and Millett 1988). is unchanged by Mutation.
| (5) |
| (6) |
M. B. Thistlethwaite has tabulated the Kauffman 2-variable Polynomial for Knots up to 13 crossings. References
Lickorish, W. B. R. and Millett, B. R. ``The New Polynomial Invariants of Knots and Links.'' Math. Mag. 61, 1-23, 1988.Stoimenow, A. ``Kauffman Polynomials.'' http://www.informatik.hu-berlin.de/~stoimeno/ptab/k10.html. Weisstein, E. W. ``Knots and Links.'' Mathematica notebook Knots.m.
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