Heegaard Floer homology and alternating knots

Research output: Contribution to journalArticle

94 Scopus citations

Abstract

In an earlier paper, we introduced a knot invariant for a null-homologous knot K in an oriented three-manifold Y, which is closely related to the Heegaard Floer homology of Y. In this paper we investigate some properties of these knot homology groups for knots in the three-sphere. We give a combinatorial description for the generators of the chain complex and their gradings. With the help of this description, we determine the knot homology for alternating knots, showing that in this special case, it depends only on the signature and the Alexander polynomial of the knot (generalizing a result of Rasmussen for two-bridge knots). Applications include new restrictions on the Alexander polynomial of alternating knots.

Original languageEnglish (US)
Pages (from-to)225-254
Number of pages30
JournalGeometry and Topology
Volume7
DOIs
StatePublished - 2003

All Science Journal Classification (ASJC) codes

  • Geometry and Topology

Keywords

  • Alternating knots
  • Floer homology
  • Kauffman states

Fingerprint Dive into the research topics of 'Heegaard Floer homology and alternating knots'. Together they form a unique fingerprint.

  • Cite this