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arxiv: 1606.00764 · v2 · pith:ZLZCCEYMnew · submitted 2016-06-02 · 🧮 math.CO

Torus link homology and the nabla operator

classification 🧮 math.CO
keywords formulaeliashogancamphomologylinknablatoruscase
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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 $(n,n)$ 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 $(n,n)$ torus link case of our formula and the symmetric function $\nabla p_{1^n}$.

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