English

Torus link homology and the nabla operator

Combinatorics 2016-07-19 v2

Abstract

In recent work, Elias and Hogancamp develop a recurrence for the Poincar\'e series of the triply graded Hochschild homology of certain links, one of which is the (n,n)(n,n) torus link. In this case, Elias and Hogancamp give a combinatorial formula for this homology that is reminiscent of the combinatorics of the modified Macdonald polynomial eigenoperator \nabla. We give a combinatorial formula for the homologies of all links considered by Elias and Hogancamp. Our first formula is not easily computable, so we show how to transform it into a computable version. Finally, we conjecture a direct relationship between the (n,n)(n,n) torus link case of our formula and the symmetric function p1n\nabla p_{1^n}.

Keywords

Cite

@article{arxiv.1606.00764,
  title  = {Torus link homology and the nabla operator},
  author = {Andrew Timothy Wilson},
  journal= {arXiv preprint arXiv:1606.00764},
  year   = {2016}
}
R2 v1 2026-06-22T14:16:05.138Z