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A FAST ALGORITHM FOR CALCULATING S-INVARIANTS
Published online by Cambridge University Press: 29 June 2020
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 s-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.
MSC classification
Primary:
57M25: Knots and links in $S^3$
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- Research Article
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- © The Author(s), 2020. Published by Cambridge University Press on behalf of Glasgow Mathematical Journal Trust
References
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