English

On knot Floer width and Turaev genus

Geometric Topology 2016-01-20 v1 Algebraic Topology

Abstract

To each knot KS3K\subset S^3 one can associated its knot Floer homology HFK^(K)\hat{HFK}(K), a finitely generated bigraded abelian group. In general, the nonzero ranks of these homology groups lie on a finite number of slope one lines with respect to the bigrading. The width of the homology is, in essence, the largest horizontal distance between two such lines. Also, for each diagram DD of KK there is an associated Turaev surface, and the Turaev genus is the minimum genus of all Turaev surfaces for KK. We show that the width of knot Floer homology is bounded by Turaev genus plus one. Skein relations for genus of the Turaev surface and width of a complex that generates knot Floer homology are given.

Keywords

Cite

@article{arxiv.0709.0720,
  title  = {On knot Floer width and Turaev genus},
  author = {Adam Lowrance},
  journal= {arXiv preprint arXiv:0709.0720},
  year   = {2016}
}

Comments

15 pages, 15 figures

R2 v1 2026-06-21T09:14:19.149Z