Geodesic
Ribbon distance and Khovanov homology
Sarkar, Sucharit1
1Department of Mathematics, University of California, Los Angeles, CA, United States
Algebraic and Geometric Topology, Tome 20 (2020) no. 2, pp. 1041-1058
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We study a notion of distance between knots, defined in terms of the number of saddles in ribbon concordances connecting the knots. We construct a lower bound on this distance using the X–action on Lee’s perturbation of Khovanov homology.

DOI : 10.2140/agt.2020.20.1041
Classification : 57M25
Keywords: Khovanov homology, ribbon concordance

Sarkar, Sucharit  1

1 Department of Mathematics, University of California, Los Angeles, CA, United States 
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Sarkar, Sucharit. Ribbon distance and Khovanov homology. Algebraic and Geometric Topology, Tome 20 (2020) no. 2, pp. 1041-1058. doi: 10.2140/agt.2020.20.1041

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