中文

Knot polynomials via one parameter knot theory

几何拓扑 2007-05-23 v2 代数几何

摘要

We construct new knot polynomials. Let VV be the standard solid torus in 3-space and let prpr be its standard projection onto an annulus. Let MM be the space of all smooth oriented knots in VV such that the restriction of prpr is an immersion (e.g. regular diagrams of a classical knot in the complement of its meridian). There is a canonical one dimensional homology class for each connected component of MM. We construct homomorphisms from the first homology group of MM into rings of Laurent polynomials. Each such homomorphism applied to the canonical homology class gives a knot invariant. Let γ\gamma be a generic smooth oriented loop in MM (i.e. a one parameter family of knot diagrams in the annulus). For finitely many points in γ\gamma the corresponding knot diagram has in the projection prpr an ordinary triple point or an ordinary auto-tangency. To each such diagram we associate some Laurent polynomial by using extensions of the Kauffman bracket or of the Kauffman state model for the Alexander polynomial. We take then an algebraic sum of these polynomials over all triple points and all autotangencies in γ\gamma. The resulting polynomial depends only on the homology class of γ\gamma if and only if it verifies two sorts of equations: the tetrahedron equations and the cube equations. We have found five different non trivial solutions.

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引用

@article{arxiv.math/0612115,
  title  = {Knot polynomials via one parameter knot theory},
  author = {Thomas Fiedler},
  journal= {arXiv preprint arXiv:math/0612115},
  year   = {2007}
}

备注

95 pages, 55 figures v.2 : details about approximation by regular isotopies and references added