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Let $M$ be an exact symplectic manifold with contact type boundary such that $c_1(M)=0$. In this paper we show that the cyclic cohomology of the Fukaya category of $M$ has the structure of an involutive Lie bialgebra. Inspired by a work of…

Symplectic Geometry · Mathematics 2012-08-01 Xiaojun Chen , Hai-Long Her , Shanzhong Sun

We derive constraints on Lagrangian embeddings in completions of certain stable symplectic fillings with semisimple symplectic cohomologies. Manifolds with these properties can be constructed by generalizing the boundary connected sum…

Symplectic Geometry · Mathematics 2020-11-11 Yin Li

We construct a Lagrangian in the cotangent bundle of a 3-torus whose projection to the fiber is a neighborhood of a tropical curve with a single 4-valent vertex. This Lagrangian has an isolated conical singular point, and its smooth locus…

Symplectic Geometry · Mathematics 2025-11-18 Sebastian Haney

The asymptotic behaviour of solutions to the quantum differential equation of a Fano manifold F defines a characteristic class A_F of F, called the principal asymptotic class. Gamma conjecture of Vasily Golyshev and the present authors…

Algebraic Geometry · Mathematics 2021-06-02 Sergey Galkin , Hiroshi Iritani

Let G be a noncompact real semisimple Lie group. The regular coadjoint orbits of G can be partitioned into a finite set of types. We show that on each regular orbit, the Iwasawa decomposition induces a left-invariant foliation which is…

Symplectic Geometry · Mathematics 2011-10-24 William D. Kirwin

We study complex Lagrangian submanifolds of a compact hyper-K\"ahler manifold and prove two results: (a) that an involution of a hyper-K\"ahler manifold which is antiholomorphic with respect to one complex structure and which acts…

Differential Geometry · Mathematics 2014-10-27 Indranil Biswas , Graeme Wilkin

The main theorem of this paper asserts that the inclusion of the space of projective Lagrangian planes into the space of Lagrangian submanifolds of complex projective space induces an injective homomorphism of fundamental groups. We…

Symplectic Geometry · Mathematics 2007-05-23 Meike Akveld , Dietmar Salamon

We show that the Hamiltonian Lagrangian monodromy group, in its homological version, is trivial for any weakly exact Lagrangian submanifold of a symplectic manifold. The proof relies on a sheaf approach to Floer homology given by a relative…

Symplectic Geometry · Mathematics 2014-11-11 Shengda Hu , Francois Lalonde , Remi Leclercq

This paper is a companion to the authors' forthcoming work extending Heegaard Floer theory from closed 3-manifolds to compact 3-manifolds with two boundary components via quilted Floer cohomology. We describe the first interesting case of…

Symplectic Geometry · Mathematics 2016-07-13 Yanki Lekili , Timothy Perutz

Given a finite dimensional Lie algebra $\mathfrak{g}$, let $\Gamma_\circ(\mathfrak{g})$ be the set of irreducible $\mathfrak{g}$-modules with non-vanishing cohomology. We prove that a $\mathfrak{g}$-module $V$ belongs to…

Representation Theory · Mathematics 2014-03-18 Leandro Cagliero , Paulo Tirao

Since its inception, Floer homology has been an important tool in low-dimensional topology. Floer theoretic invariants of $3$-manifolds tend to be either gauge theoretic or symplecto-geometric in nature, and there is a general philosophy…

Geometric Topology · Mathematics 2019-12-20 Henry T. Horton

For a complex reductive group $G$, we prove a homological mirror symmetry between the wrapped Fukaya category of the affine Toda system for $G$ and coherent sheaves on the regular centralizer group scheme for the Langlands dual group…

Symplectic Geometry · Mathematics 2026-05-21 Xin Jin , Zhiwei Yun

Given a Lagrangian submanifold $L$ in a symplectic manifold $X$, the homological Lagrangian monodromy group $\mathcal{H}_L$ describes how Hamiltonian diffeomorphisms of $X$ preserving $L$ setwise act on $H_*(L)$. We begin a systematic study…

Symplectic Geometry · Mathematics 2024-05-09 Marcin Augustynowicz , Jack Smith , Jakub Wornbard

In a recent paper we defined a new filtration of the mapping class group--the "Lagrangian" filtration. We here determine the successive quotients of this filtration, up to finite index. As an application we show that, for any additive…

Geometric Topology · Mathematics 2007-05-23 Jerome Levine

We show a mathematically precise version of the SYZ conjecture, proposed in the family Floer context, for the conifold with a conjectural mirror relation between smoothing and crepant resolution. The singular T-duality fibers are explicitly…

Symplectic Geometry · Mathematics 2025-04-21 Hang Yuan

We consider homogeneous varieties of linear algebras over an associative-commutative ring K with 1, i.e., the varieties in which free algebras are graded. Let F be a free algebra of some variety A of linear algebras over K freely generated…

Rings and Algebras · Mathematics 2016-09-07 Ruvim Lipyanski

We give an explicit description of the Floer cohomology of a family of Dehn twists about disjoint Lagrangian spheres in a w+ - monotone rational symplectic manifold. As a byproduct of our framework, in a monotone symplectic manifold we are…

Symplectic Geometry · Mathematics 2023-09-14 Riccardo Pedrotti

In this survey paper, we briefly review various aspects of the SYZ approach to mirror symmetry for non-Calabi-Yau varieties, focusing in particular on Lagrangian fibrations and wall-crossing phenomena in Floer homology. Various examples are…

Symplectic Geometry · Mathematics 2009-02-11 Denis Auroux

We confirm a conjecture by Lekili and Polishchuk that the geometric invariants which they construct for homologically smooth graded (not necessarily proper) gentle algebras form a complete derived invariant. Hence, we obtain a complete…

Representation Theory · Mathematics 2025-03-21 Haibo Jin , Sibylle Schroll , Zhengfang Wang

We study homological mirror symmetry for toric varieties, exploring the relationship between various Fukaya-Seidel categories which have been employed for constructing the mirror to a toric variety. In particular, we realize tropical…

Symplectic Geometry · Mathematics 2022-04-04 Andrew Hanlon , Jeff Hicks
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