Thin-position conjecture for the knots K2,1,3,7K_{2,1,3,7} and K4,1,3,3K_{4,1,3,3}

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Let BiB_i be the braids occurring in the paper's construction, and let K2,1,3,7K_{2,1,3,7} and K4,1,3,3K_{4,1,3,3} denote the corresponding knots. A thin position is an embedding realizing minimum width; minimum trunk and bridge number are defined analogously. Thin-position conjecture. For sufficiently complicated braids BiB_i, thin position of K2,1,3,7K_{2,1,3,7} does not realize minimum trunk or minimum bridge number, while thin position of K4,1,3,3K_{4,1,3,3} realizes minimum bridge number but not minimum trunk. These claims arise from embeddings whose thinness cannot currently be verified for the stated examples, so they remain conjectural.

References

Primary source

Derek Davies and Alexander Zupan, “Natural properties of the trunk of a knot”, arXiv:1608.00019 (2016).

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