English

Fukaya category of infinite-type surfaces

Symplectic Geometry 2023-02-16 v1

Abstract

In this paper, we construct a Fukaya category of any infinite type surface whose objects are gradient sectorial Lagrangians. This class of Lagrangian submanifolds is introduced by one of the authors in [Oh21b] which can serve as an object of a Fukaya category of any Liouville manifold that admits an exhausting proper Morse function, in particular on the Riemann surface of infinite type. We describe a generating set of the Fukaya category in terms of the end structure of the surface when the surface has countably many limit points in its ideal boundary, the latter of which can be described in terms of a subset of the Cantor set. We also show that our Fukaya category is not quasi-equivalent to the limit of the Fukaya category of surfaces of finite type appearing in the literature.

Cite

@article{arxiv.2302.07488,
  title  = {Fukaya category of infinite-type surfaces},
  author = {Jaeyoung Choi and Yong-Geun Oh},
  journal= {arXiv preprint arXiv:2302.07488},
  year   = {2023}
}

Comments

48 pages, 13 figures

R2 v1 2026-06-28T08:40:28.832Z