# A new polynomial invariant of knots and links

@article{Freyd1985ANP, title={A new polynomial invariant of knots and links}, author={Peter J. Freyd and David N. Yetter and Jimmy-John O. E. Hoste and W. B. R. Lickorish and Kenneth C. Millett and Adrian Ocneanu}, journal={Bulletin of the American Mathematical Society}, year={1985}, volume={12}, pages={239-246} }

The purpose of this note is to announce a new isotopy invariant of oriented links of tamely embedded circles in 3-space. We represent links by plane projections, using the customary conventions that the image of the link is a union of transversely intersecting immersed curves, each provided with an orientation, and undercrossings are indicated by broken lines. Following Conway [6], we use the symbols L+, Lo, L_ to denote links having plane projections which agree except in a small disk, and…

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