English

A subtle new invariant for framed knots and links

Geometric Topology 2012-10-01 v2 Combinatorics

Abstract

We produce a facial state sum on plane diagrams of a knot or a link which admits an invariant specialization under Polyak's recent set of generating of 4 Reidemeister moves. Thus an isotopy invariant of framed links is obtained. Each state is a complete coloring of the faces of the diagram into white and black faces so that no two black faces share an edge. Each state induces a monomial in a ring of 16 variables. The sum of the states, properly specialized defines the new invariant. In despite of its simplicity it complements Jones invariant in distinguishing mirror pairs of links. In particular it proves that 9429_{42} is distinct from its mirror image. For this pair of knots both the Jones Polynomial and Kauffman 2-variable polynomial fail.

Keywords

Cite

@article{arxiv.1209.4835,
  title  = {A subtle new invariant for framed knots and links},
  author = {Sostenes Lins},
  journal= {arXiv preprint arXiv:1209.4835},
  year   = {2012}
}

Comments

6 pages, 6 figures

R2 v1 2026-06-21T22:09:05.620Z