The strong invertibility conjecture for L-space knots

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Let KK be an L-space knot in S3S^3, meaning that KK admits a non-trivial Dehn surgery to a 3-manifold YY satisfying

rk⁡HF^(Y)=∣H1(Y,Z)∣.\operatorname{rk} \widehat{HF}(Y)=|H_1(Y,\mathbb{Z})|.

Strong invertibility conjecture. Every L-space knot in S3S^3 is strongly invertible: there is an orientation-preserving involution of S3S^3 whose fixed-point set is a circle intersecting KK in two points and which takes KK to itself.

The conjecture arose from the observation that many L-space knots are strongly invertible. It is refuted by the construction in this paper of asymmetric L-space knots in S3S^3, namely L-space knots that are not strongly invertible.

References

Primary source

Kenneth L. Baker and John Luecke, “Asymmetric L-space knots”, arXiv:1710.01655 (2017).

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