A fast algorithm for calculating $s$-invariants
Geometric Topology
2018-11-16 v1 Algebraic Topology
Abstract
We use the divide-and-conquer and scanning algorithms for calculating Khovanov cohomology directly on the Lee- or Bar-Natan deformations of the Khovanov complex to give an alternative way to compute Rasmussen -invariants of knots. By disregarding generators away from homological degree 0 we can considerably improve the efficiency of the algorithm. With a slight modification we can also apply it to a refinement of Lipshitz-Sarkar.
Cite
@article{arxiv.1811.06432,
title = {A fast algorithm for calculating $s$-invariants},
author = {Dirk Schuetz},
journal= {arXiv preprint arXiv:1811.06432},
year = {2018}
}
Comments
22 pages