English

Fukaya categories of higher-genus surfaces and pants decompositions

Symplectic Geometry 2021-09-24 v3 Algebraic Geometry Algebraic Topology

Abstract

In this paper we prove a local-to-global principle for the Fukaya category of a closed Riemann surface Σ\Sigma of genus g2g \geq 2. We show that Fuk(Σ)\mathrm{Fuk}(\Sigma) can be glued from the Fukaya categories of the pairs-of-pants making up a pants decomposition of Σ\Sigma. This extends our earlier results for the case of punctured Riemann surfaces. Our result has several interesting consequences: we obtain simple proofs of old and new HMS statements for Riemann surfaces, and establish a geometrization theorem for the objects of Fuk(Σ)\mathrm{Fuk}(\Sigma).

Keywords

Cite

@article{arxiv.2103.03366,
  title  = {Fukaya categories of higher-genus surfaces and pants decompositions},
  author = {James Pascaleff and Nicolò Sibilla},
  journal= {arXiv preprint arXiv:2103.03366},
  year   = {2021}
}

Comments

A correction has been made to the statement of Theorem 5.6. This affects Theorem 7.1 and its corollaries. 46 pages