Legendrian links and the spanning tree model for Khovanov homology
arXiv:math/0605630 · doi:10.2140/agt.2006.6.1745
Abstract
We use the spanning tree model for Khovanov homology to study Legendrian links. This leads to an alternative proof for Ng's Khovanov bound for the Thurston-Bennequin number and to both a necessary and a sufficient condition for this bound to be sharp.
This is the version published by Algebraic & Geometric Topology on 21 October 2006