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Let $W$ be a symplectic manifold, and let $\phi:W \to W$ be a symplectic automorphism. Then, $\phi$ induces an auto-equivalence $\Phi$ defined on the Fukaya category of $W$. In this paper, we prove that the categorical entropy of $\Phi$…

Symplectic Geometry · Mathematics 2025-10-01 Hanwool Bae , Sangjin Lee

We study the existence of whiskered tori in a family $f_\mu$ of conformally symplectic maps depending on parameters $\mu$. Whiskered tori are tori on which the motion is a rotation, but they have as many expanding/contracting directions as…

Dynamical Systems · Mathematics 2020-01-08 Renato C. Calleja , Alessandra Celletti , Rafael de la Llave

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 article we prove that iterated renormalisations of $\mathcal{C}^r$ circle diffeomorphisms with $d$ breaks, $r>2$, with given size of breaks, converge to an invariant family of piecewise Moebius maps, of dimension $2d$. We prove that…

Dynamical Systems · Mathematics 2019-07-17 Selim Ghazouani , Konstantin Khanin

We provide an explicit formula for localizing $A^1$-homotopy invariants of topological Fukaya categories of marked surfaces. Following a proposal of Kontsevich, this differential $\mathbb Z$-graded category is defined as global sections of…

Category Theory · Mathematics 2019-02-20 Tobias Dyckerhoff

The topological classification of the inner mappings on the fully invariant regular components of the wandering set with a special attracting boundary up to the topological conjugacy is defined in terms of distinguishing graph. Two inner…

Dynamical Systems · Mathematics 2010-05-20 I. Yu. Vlasenko

We construct an A-infinity structure of the Fukaya category explicitly for any flat symplectic two-torus. The structure constants of the non-transversal A-infinity products are obtained as derivatives of those of transversal A-infinity…

Quantum Algebra · Mathematics 2018-12-03 Hiroshige Kajiura

Affine cluster varieties are covered up to codimension 2 by open algebraic tori. We put forth a general conjecture (based on earlier conversation between Vivek Shende and the last author) characterizing their deep locus, i.e. the complement…

Algebraic Geometry · Mathematics 2024-03-06 Marco Castronovo , Mikhail Gorsky , José Simental , David E Speyer

This is the first of a series of two articles where we construct a version of wrapped Fukaya category $\mathcal W\mathcal F(M\setminus K;H_{g_0})$ of the cotangent bundle $T^*(M \setminus K)$ of the knot complement $M \setminus K$ of a…

Symplectic Geometry · Mathematics 2019-03-14 Youngjin Bae , Seonhwa Kim , Yong-Geun Oh

The Baum-Connes map for finitely generated free abelian groups is a K-theoretic analogue of the Fourier-Mukai transform from algebraic geometry. We describe this K-theoretic transform in the language of topological correspondences, and…

K-Theory and Homology · Mathematics 2020-07-29 Heath Emerson , Dan Hudson

The algebraic notion of a pivotal module category was developed by Schaumann and Shimizu and is central to the description of boundary conditions in conformal field theory according to a proposal by Fuchs and Schweigert. In this paper, we…

Quantum Algebra · Mathematics 2025-12-24 Jorge Becerra , Lukas Woike

In previous work, we introduced a version of the Fukaya algebra associated to a degeneration of a symplectic manifold, whose structure maps count collections of maps in the components of the degeneration satisfying matching conditions. In…

Symplectic Geometry · Mathematics 2025-04-23 Sushmita Venugopalan , Chris Woodward

We classify symplectic actions of 2-tori on compact, connected symplectic 4-manifolds, up to equivariant symplectomorphisms. This extends results of Atiyah, Guillemin-Sternberg, Delzant and Benoist. The classification is in terms of a…

Symplectic Geometry · Mathematics 2007-05-23 Alvaro Pelayo

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

Dissipative mechanical systems on the torus with a friction that is proportional to the velocity are modeled by conformally symplectic maps on the annulus, which are maps that transport the symplectic form into a multiple of itself (with a…

Dynamical Systems · Mathematics 2021-02-03 Renato Calleja , Marta Canadell , Alex Haro

This paper proposes a framework to show that the Fukaya category of a symplectic manifold $X$ determines the open Gromov-Witten invariants of Lagrangians $L \subset X$. We associate to an object in an $A_\infty$-category an extension of the…

Symplectic Geometry · Mathematics 2024-02-29 Kai Hugtenburg

We give a `Fukaya category commutes with reduction' theorem for the Hamiltonian torus action on a multiplicative hypertoric variety.

Symplectic Geometry · Mathematics 2024-05-14 Michael McBreen , Vivek Shende , Peng Zhou

Let $(M,\omega_M)$ be a monotone or negatively monotone symplectic manifold, or a Weinstein manifold. One can construct an "action" of $H^1(M,\mathbb{G}_m)$ on the Fukaya category (wrapped Fukaya category in the exact case) that reflects…

Symplectic Geometry · Mathematics 2021-09-28 Yusuf Barış Kartal

We prove that every spherical object in the derived Fukaya category of a closed surface of genus at least two whose Chern character represents a non-zero Hochschild homology class is quasi-isomorphic to a simple closed curve equipped with a…

Symplectic Geometry · Mathematics 2021-02-02 Denis Auroux , Ivan Smith

$A_\infty$ categories are a mathematical structure that appears in topological field theory, string topology, and symplectic topology. This paper studies the cyclic homology of a Calabi-Yau $A_\infty$ category, and shows that it is…

Algebraic Topology · Mathematics 2010-04-23 Xiaojun Chen