English

A wrapped Fukaya category of knot complement

Symplectic Geometry 2019-03-14 v2 Geometric Topology

Abstract

This is the first of a series of two articles where we construct a version of wrapped Fukaya category WF(MK;Hg0)\mathcal W\mathcal F(M\setminus K;H_{g_0}) of the cotangent bundle T(MK)T^*(M \setminus K) of the knot complement MKM \setminus K of a compact 3-manifold MM, and do some calculation for the case of hyperbolic knots KMK \subset M. For the construction, we use the wrapping induced by the kinetic energy Hamiltonian Hg0H_{g_0} associated to the cylindrical adjustment g0g_0 on MKM \setminus K of a smooth metric gg defined on MM. We then consider the torus T=N(K)T = \partial N(K) as an object in this category and its wrapped Floer complex CW(νT;Hg0)CW^*(\nu^*T;H_{g_0}) where N(K)N(K) is a tubular neighborhood of KMK \subset M. We prove that the quasi-equivalence class of the category and the quasi-isomorphism class of the AA_\infty algebra CW(νT;Hg0)CW^*(\nu^*T;H_{g_0}) are independent of the choice of cylindrical adjustments of such metrics depending only on the isotopy class of the knot KK in MM. In a sequel [BKO], we give constructions of a wrapped Fukaya category WF(MK;Hh)\mathcal W\mathcal F(M\setminus K;H_h) for hyperbolic knot KK and of AA_\infty algebra CW(νT;Hh)CW^*(\nu^*T;H_h) directly using the hyperbolic metric hh on MKM \setminus K, and prove a formality result for the asymptotic boundary of (MK,h)(M \setminus K, h).

Keywords

Cite

@article{arxiv.1901.02239,
  title  = {A wrapped Fukaya category of knot complement},
  author = {Youngjin Bae and Seonhwa Kim and Yong-Geun Oh},
  journal= {arXiv preprint arXiv:1901.02239},
  year   = {2019}
}

Comments

62 pages, 3 figures. v2 introduction partially rewritten, typos corrected