Shende's conjecture relating braid varieties and affine Springer fibers

Let CC be an irreducible plane curve singularity, let LL be the corresponding algebraic knot, and let β\beta be the corresponding braid on nn strands. Let X(βΔ;w0)X(\beta\Delta;w_0) be the associated braid variety, let (C)n1(\mathbb{C}^*)^{n-1} act as in the source, and let SpY\operatorname{Sp}_{Y} denote the corresponding affine Springer fiber. Shende's conjecture. There is an isomorphism

Hc(X(βΔ;w0)/(C)n1)H(SpY),H_c^*\left(X(\beta\Delta;w_0)/(\mathbb{C}^*)^{n-1}\right)\simeq H^*(\operatorname{Sp}_{Y}),

under which the halved weight filtration on the left-hand side matches the perverse filtration on the right-hand side. This predicts a geometric correspondence between braid varieties, affine Springer fibers, and Hilbert schemes; the supplied text does not state whether the conjecture has been resolved.

Sources & referencesView supporting material

Primary source

Eugene Gorsky, Oscar Kivinen and José Simental, “Algebra and geometry of link homology”, arXiv:2108.10356 (2021).

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