English

Tautological classes for (n,n+1) torus knots

Geometric Topology 2026-01-26 v1 Combinatorics Representation Theory

Abstract

We construct an explicit isomorphism between the HOMFLY-PT homology of (n,n+1)(n,n+1) torus knots and the direct sum of hook isotypic components of the space of diagonal coinvariants. As a consequence, we compute the action of tautological classes in HOMFLY-PT homology of (n,n+1)(n,n+1) torus knots and prove that it extends to an action of the Lie algebra of Hamiltonian vector fields on the plane. We also compute the action of differentials dNd_N in Rasmussen spectral sequences from HOMLFY-PT to gl(N)\mathfrak{gl}(N) homology of (n,n+1)(n,n+1) torus knots.

Keywords

Cite

@article{arxiv.2601.16877,
  title  = {Tautological classes for (n,n+1) torus knots},
  author = {Eugene Gorsky and Anton Mellit},
  journal= {arXiv preprint arXiv:2601.16877},
  year   = {2026}
}

Comments

14 pages

R2 v1 2026-07-01T09:17:35.467Z