Computable bounds for Rasmussen's concordance invariant
Geometric Topology
2012-12-12 v2 Quantum Algebra
Abstract
Given a diagram D of a knot K, we give easily computable bounds for Rasmussen's concordance invariant s(K). The bounds are not independent of the diagram D chosen, but we show that for diagrams satisfying a given condition the bounds are tight. As a corollary we improve on previously known Bennequin-type bounds on the slice genus.
Keywords
Cite
@article{arxiv.0908.2745,
title = {Computable bounds for Rasmussen's concordance invariant},
author = {Andrew Lobb},
journal= {arXiv preprint arXiv:0908.2745},
year = {2012}
}
Comments
8 pages, 1 figure. A rewrite. New results and references added, main results unchanged