English

Spherical adjunction and Serre functor from microlocalization

Symplectic Geometry 2024-05-27 v4

Abstract

For a subanalytic Legendrian ΛSM\Lambda \subseteq S^{*}M, we prove that when Λ\Lambda is either swappable or a full Legendrian stop, the microlocalization at infinity mΛ:ShΛ(M)μshΛ(Λ)m_\Lambda: \operatorname{Sh}_\Lambda(M) \rightarrow \operatorname{\mu sh}_\Lambda(\Lambda) is a spherical functor, and the spherical cotwist is the Serre functor on the subcategory ShΛb(M)0\operatorname{Sh}_\Lambda^b(M)_0 of compactly supported sheaves with perfect stalks. This is a sheaf theory counterpart (with weaker assumptions) of the results on the cap functor and cup functors between Fukaya categories. When proving spherical adjunction, we deduce the Sato-Sabloff fiber sequence and construct the Guillermou doubling functor for any Reeb flow.

Keywords

Cite

@article{arxiv.2210.06643,
  title  = {Spherical adjunction and Serre functor from microlocalization},
  author = {Christopher Kuo and Wenyuan Li},
  journal= {arXiv preprint arXiv:2210.06643},
  year   = {2024}
}

Comments

62 pages, 7 figures. v2: A new discussion around Prop 4.17. v3: Sec 4 reorganized, which now contains two different approaches to doubling. Previous Sec 4.4-4.5 are moved to 4.3, previous Sec 4.3 is moved to 4.4 and a new Sec 4.5 is added. Previous Sec 4.4.1 and 6.2.1 are removed. v4: Sec 7 (duality and Fourier-Mukai transform) is removed, and Sec 4.6 (relative doubling) is added

R2 v1 2026-06-28T03:30:02.217Z