English

Shuffle theorem for torus link homology

Combinatorics 2026-02-09 v1 Geometric Topology Quantum Algebra Representation Theory

Abstract

We prove that the symmetric function e(1k)[MXm,n]1e_{(1^k)}[-MX^{m,n}] \cdot 1, arising from the elliptic Hall algebra, equals the generating function for kk-tuples of cyclic (m,n)(m,n)-parking functions. This result resolves a conjecture of Gorsky--Mazin--Vazirani and Wilson, establishing that the elliptic Hall algebra governs the Khovanov--Rozansky homology of torus links T(km,kn)T(km,kn). Consequently, this provides an affirmative answer to a question of Galashin and Lam in the torus link case. As a key step in the proof, we develop a rational analogue of the Shareshian--Wachs involution originally introduced to prove the symmetry property of the chromatic quasisymmetric functions.

Cite

@article{arxiv.2602.06338,
  title  = {Shuffle theorem for torus link homology},
  author = {Donghyun Kim and Jaeseong Oh},
  journal= {arXiv preprint arXiv:2602.06338},
  year   = {2026}
}

Comments

40 pages, comments are welcome

R2 v1 2026-07-01T10:23:38.108Z