English

$L$-space knots with positive surgeries that are not weakly symplectically fillable

Geometric Topology 2024-04-29 v1

Abstract

In this paper we discuss a general strategy to detect the absence of weakly symplectic fillings of LL-spaces. We start from a generic LL-space knot and consider (positive) Dehn surgeries on it. We compute, using arithmetic data depending only on the knot type and the surgery coefficient, the value of the relevant geometric invariants used to obstruct fillability. We also provide a new example of an infinite family of hyperbolic LL-spaces that do not admit weakly symplectic fillings. These are manifolds that lie inside {Tight}\{\text{Tight}\} but not inside {Weakly Fillable}\{\text{Weakly Fillable}\}.

Keywords

Cite

@article{arxiv.2404.17308,
  title  = {$L$-space knots with positive surgeries that are not weakly symplectically fillable},
  author = {Isacco Nonino},
  journal= {arXiv preprint arXiv:2404.17308},
  year   = {2024}
}

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