English

Polynomial invariants which can distinguish the orientations of knots

Geometric Topology 2023-01-18 v2

Abstract

This paper contains the first knot polynomials which can distinguish the orientations of classical knots and which make no excplicit use of the knot group. But they make extensive use of the meridian and of the longitude in a geometric way. Let MM be the topological moduli space of long knots up to regular isotopy, and for any natural number n>1n > 1 let MnM_n be the moduli space of all n-cables nKnK of framed long knots KK which are twisted by a given string link TT to close to a knot in the solid torus, with a marked point on the knot at infinity. First we construct integer valued combinatorial 1-cocycles for MnM_n by using Gauss diagram formulas for finite typ invariants. We observe then that our 1-cocycles allow to fix certain crossings of nKnK as local parameters of the 1-cocycles. Finally, we transform the local parameter into an unordered set of global parameters by following the crossings in the isotopy. We evaluate now the 1-cocycles on a canonical loop in MnM_n. The outcome are polynomial valued invariants of KK, where the variables are indexed by finite type invariants and by regular isotopy types of string links TT.

Keywords

Cite

@article{arxiv.2211.10734,
  title  = {Polynomial invariants which can distinguish the orientations of knots},
  author = {Thomas Fiedler},
  journal= {arXiv preprint arXiv:2211.10734},
  year   = {2023}
}

Comments

Error in main result. New version in preparation