2020/02/12 by Caprau, Carmen, González, Nicolle, Lee, Christine Ruey Shan +3
#57M25 (Secondary) #57M27 (Primary) #FOS: Mathematics #Geometric Topology (math.GT)
paper · doi:10.48550/arxiv.2002.05247
This paper begins with a survey of some applications of Khovanov homology to low-dimensional topology, with an eye toward extending these results to \mathfraksl(n) homologies. We extend Levine and Zemke's ribbon concordance obstruction from Khovanov homology to \mathfraksl(n) homology for n ≥ 2, including the universal \mathfraksl(2) and \mathfraksl(3) homology theories. Inspired by Alishahi and Dowlin's bounds for the unknotting number coming from Khovanov homology and relying on spectral sequence arguments, we produce bounds on the alternation number of a knot. Lee and Bar-Natan spectral sequences also provide lower bounds on Turaev genus.