Simple-knot detection conjecture for knots in lens spaces

Let Y=L(p,q)Y=L(p,q) be a lens space and let KYK\subset Y be a knot. Here HFK^(Y,K)\widehat{HFK}(Y,K) denotes the hat version of knot Floer homology, and a simple knot means a (1,1)(1,1) knot W(p,q,r,s)W(p',q',r',s') with q=0q'=0.

Simple-knot detection conjecture. If

HFK^(Y,K)Zp,\widehat{HFK}(Y,K)\cong \mathbb{Z}^p,

then KK is a simple knot.

This conjecture is suggested by the fact that the corresponding simple knot has knot Floer homology isomorphic to Zp\mathbb{Z}^p and is related to Berge's conjecture on knots in S3S^3 admitting lens-space surgeries. Its resolution status is not specified in the source.

Sources & referencesView supporting material

Primary source

Fan Ye, “Constrained knots in lens spaces”, arXiv:2007.04237 (2021).

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