English

Annular Khovanov homology detects three-strand weaving links

Geometric Topology 2026-07-18 v1

Abstract

For N1N\geq1, let KNK_N be the annular closure of (σ1σ21)N.(\sigma_1\sigma_2^{-1})^N. We prove that triply graded annular Khovanov homology over F2\mathbb F_2 detects the underlying unoriented annular link KNK_N. If 3N3\nmid N, the only ambiguity is overall orientation reversal. If 3N3\mid N, the only ambiguity is independent reversal of components; every such reorientation has the same homology, so this is sharp. The proof combines braid detection from the extremal annular grading with a rigidity theorem: the Jones polynomial and exponent sum determine (σ1σ21)N(\sigma_1\sigma_2^{-1})^N up to conjugacy in B3B_3.

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Cite

@article{arxiv.2607.16661,
  title  = {Annular Khovanov homology detects three-strand weaving links},
  author = {Suman Saurabh},
  journal= {arXiv preprint arXiv:2607.16661},
  year   = {2026}
}

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9 pages