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We construct the Fukaya category of a closed surface equipped with an area form using only elementary (essentially combinatorial) methods. We also compute the Grothendieck group of its derived category.

Symplectic Geometry · Mathematics 2007-08-30 Mohammed Abouzaid

This is an informal (and mostly conjectural) discussion of some aspects of Fukaya categories. We start by looking at exact symplectic manifolds which are obtained from a closed Calabi-Yau by removing a hyperplane section. We look at the…

Symplectic Geometry · Mathematics 2007-05-23 Paul Seidel

We describe the formulation of Fukaya categories of symplectic manifolds with $B$-fields. In addition, we give a formula for how the $A_\infty$ structure maps change as we deform an object by a Lagrangian isotopy.

Symplectic Geometry · Mathematics 2025-10-31 Haniya Azam , Catherine Cannizzo , Heather Lee , Chiu-Chu Melissa Liu

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…

Symplectic Geometry · Mathematics 2023-02-16 Jaeyoung Choi , Yong-Geun Oh

We embed triangulated categories defined by quivers with potential arising from ideal triangulations of marked bordered surfaces into Fukaya categories of quasi-projective 3-folds associated to meromorphic quadratic differentials. Together…

Symplectic Geometry · Mathematics 2016-01-20 Ivan Smith

In this paper, using similar idea as in Fukaya-Oh's work ([9]), we devise a method to compute the Fukaya category of certain exact symplectic manifolds by reducing it to the corresponding Morse category of non-Hausdorff manifold as…

Symplectic Geometry · Mathematics 2007-05-23 Wei-Dong Ruan

We study the partially wrapped Fukaya category of a surface with boundary with an action of a group of order two. Inspired by skew-group algebras and categories, we define the notion of a skew-group $A_\infty$-category and let it play the…

Representation Theory · Mathematics 2026-05-21 Claire Amiot , Pierre-Guy Plamondon

We identify spaces of half-translation surfaces, equivalently complex curves with quadratic differential, with spaces of stability structures on Fukaya-type categories of punctured surfaces. This is achieved by new methods involving the…

Algebraic Geometry · Mathematics 2020-09-08 Fabian Haiden , Ludmil Katzarkov , Maxim Kontsevich

In this paper we use recollements to investigate partially wrapped Fukaya categories of surfaces with marked points. In particular, we show that cutting surfaces gives rise to recollements of the corresponding partially wrapped Fukaya…

Representation Theory · Mathematics 2023-04-04 Wen Chang , Haibo Jin , Sibylle Schroll

We give an introduction to partially wrapped Fukaya categories of surfaces with orbifold singularities. Dissecting an orbifold surface $\mathbf S$ into polygons, certain dissections give rise to formal generators, inducing a triangulated…

Representation Theory · Mathematics 2026-02-20 Severin Barmeier , Zhengfang Wang

This paper is about the Fukaya category of a Fano hypersurface $X \subset \mathbb{CP}^n$. Because these symplectic manifolds are monotone, both the analysis and the algebra involved in the definition of the Fukaya category simplify…

Symplectic Geometry · Mathematics 2016-12-06 Nick Sheridan

Given a symplectic manifold M, we consider a category with objects finite ordered families of Lagrangian submanifolds of M (subject to certain additional constraints) and with morphisms Lagrangian cobordisms relating them. We construct a…

Symplectic Geometry · Mathematics 2018-08-28 Paul Biran , Octav Cornea

We study families of objects in Fukaya categories, specifically ones whose deformation behaviour is prescribed by the choice of an odd degree cohomology class. This leads to invariants of symplectic manifolds, which we apply to blowups…

Symplectic Geometry · Mathematics 2014-01-13 Paul Seidel

Categorical symplectic geometry is the study of a rich collection of invariants of symplectic manifolds, including the Fukaya $A_\infty$-category, Floer cohomology, and symplectic cohomology. Beginning with work of Wehrheim and Woodward in…

Symplectic Geometry · Mathematics 2022-10-21 Mohammed Abouzaid , Nathaniel Bottman

The Fukaya category of a Weinstein manifold is an intricate symplectic invariant of high interest in mirror symmetry and geometric representation theory. This paper informally sketches how, in analogy with Morse homology, the Fukaya…

Symplectic Geometry · Mathematics 2014-03-04 David Nadler

The goal of these notes is to give a short introduction to Fukaya categories and some of their applications. The first half of the text is devoted to a brief review of Lagrangian Floer (co)homology and product structures. Then we introduce…

Symplectic Geometry · Mathematics 2013-01-30 Denis Auroux

We construct the Fukaya category of a surface with genus greater than one and compute its Grothendieck group. We consider here a topological variant, in which we disregard the area form and use instead an admissibility condition borrowed…

Geometric Topology · Mathematics 2020-03-30 Haniya Azam , Christian Blanchet

We give a complete description of partially wrapped Fukaya categories of graded orbifold surfaces with stops. We show that a construction via global sections of a natural cosheaf of A$_\infty$ categories on a Lagrangian core of the surface…

Symplectic Geometry · Mathematics 2024-07-24 Severin Barmeier , Sibylle Schroll , Zhengfang Wang

We formulate some conjectures about the K-theory of symplectic manifolds and their Fukaya categories, and prove some of them in very special cases.

Symplectic Geometry · Mathematics 2019-09-09 David Treumann

We describe various approaches to understanding Fukaya categories of cotangent bundles. All of the approaches rely on introducing a suitable class of noncompact Lagrangian submanifolds. We review the work of Nadler-Zaslow (math/0604379,…

Symplectic Geometry · Mathematics 2007-09-26 Kenji Fukaya , Paul Seidel , Ivan Smith
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