A note on Gornik%26apos;s perturbation of Khovanov-Rozansky homology

作者:Lobb Andrew*
来源:Algebraic and Geometric Topology, 2012, 12(1): 293-305.
DOI:10.2140/agt.2012.12.293

摘要

We show that the information contained in the associated graded vector space to Gornik%26apos;s version of Khovanov-Rozansky knot homology is equivalent to a single even integer s(n)(K). Furthermore we show that s(n) is a homomorphism from the smooth knot concordance group to the integers. This is in analogy with Rasmussen%26apos;s invariant coming from a perturbation of Khovanov homology.

  • 出版日期2012