Dowlin's graded sl_n to knot Floer spectral sequence conjecture

Let LL be a link in S3S^3, and let n1n\geq 1. Let Hn(L)H_n(L) and Hn(L)\overline{H}_n(L) denote the unreduced and reduced sln\mathfrak{sl}_n homologies, with bigrading (grn,grv)(\mathbf{gr}_n,\mathbf{gr}_v), and let HFKn(L)\mathit{HFK}_n(L) and HFK^n(L)\widehat{\mathit{HFK}}_n(L) denote the corresponding unreduced and reduced knot Floer homologies. The grading on Hn(L)H_n(L) is grn+n2grv\mathbf{gr}_n+\frac{n}{2}\mathbf{gr}_v.

Dowlin's graded spectral sequence conjecture. For each nn, there are spectral sequences

Hn(L)HFKn(L)H_n(L)\Longrightarrow\mathit{HFK}_n(L)

and

Hn(L)HFK^n(L),\overline{H}_n(L)\Longrightarrow\widehat{\mathit{HFK}}_n(L),

with each differential decreasing the grading grn+n2grv\mathbf{gr}_n+\frac{n}{2}\mathbf{gr}_v by nn.

This conjecture is motivated by the agreement of the theories on completely singular links and predicts that the sln\mathfrak{sl}_n and knot Floer theories are connected by grading-compatible spectral sequences. The source gives no resolution status.

Sources & referencesView supporting material

Primary source

Nathan Dowlin, “A family of sl_n-like invariants in knot Floer homology”, arXiv:1804.03165 (2018).

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