GNSSS color-shifting conjecture for reduced colored HOMFLY homology

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Let L=L1⊔⋯⊔Ld\mathcal{L} = \mathcal{L}_1 \sqcup \dots \sqcup \mathcal{L}_d be a link with L1\mathcal{L}_1 an unknot and suppose p∈L1p \in \mathcal{L}_1. For colors k1,…,kdk_1,\dots,k_d, let Pk1,…,kd(A,Q,T)\mathcal{P}_{k_1,\dots,k_d}(A,Q,T) denote the graded dimension of reduced colored HOMFLY homology at pp. GNSSS color-shifting conjecture. There exists a polynomial fk2,…,kd(A,Q,T,x)f_{k_2,\dots,k_d}(A,Q,T,x), independent of k1k_1, such that

Pk1,…,kd(A,Q,T)=fk2,…,kd(A,Q,T,x=Qk1)\mathcal{P}_{k_1,\dots,k_d}(A,Q,T)=f_{k_2,\dots,k_d}(A,Q,T,x=Q^{k_1})

for all k1≥0k_1\geq 0, with P0,k2,…,kd:=dim⁡(HHH(L−L1))\mathcal{P}_{0,k_2,\dots,k_d}:=\dim(HHH(\mathcal{L}-\mathcal{L}_1)). This color-shifting behavior is wide open in full generality, including for non-torus links; its decategorified version for colored HOMFLY polynomials was proved by Wedrich.

References

Primary source

Luke Conners, “Doubly-graded exponential growth of colored torus knot homology”, arXiv:2512.20597 (2025).

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