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Related papers: Lagrangian Fillings in A-type and their Kalman Loo…

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Here we study several questions concerning Liouville domains that are diffeomorphic to cylinders, so called trivial bi-fillings, for which the Liouville skeleton moreover is smooth and of codimension one; we also propose the notion of a…

Symplectic Geometry · Mathematics 2025-07-25 Georgios Dimitroglou Rizell

We show that an exact Lagrangian cobordism $L\subset \mathbb R \times P \times \mathbb R$ from a Legendrian submanifold $\Lambda\subset P\times \mathbb R$ to itself satisfies $H_i(L;\mathbb F)=H_i(\Lambda;\mathbb F)$ for any field $\mathbb…

Symplectic Geometry · Mathematics 2015-12-09 Georgios Dimitroglou Rizell , Roman Golovko

In this paper we construct an $\mathcal{A}_\infty$-category associated to a Legendrian submanifold of jet spaces. Objects of the category are augmentations of the Chekanov algebra $\mathcal{A}(\Lambda)$ and the homology of the morphism…

Symplectic Geometry · Mathematics 2013-05-14 Frédéric Bourgeois , Baptiste Chantraine

Answering a question of Witten, we introduce a novel method for defining an integral version of Lagrangian Floer homology, removing the standard restriction that the Lagrangians in question must be relatively Pin. Using this technique, we…

Symplectic Geometry · Mathematics 2019-12-05 Semon Rezchikov

This is the second in a series of papers investigating the relationship between the twisted equivariant K-theory of a compact Lie group G and the "Verlinde ring" of its loop group. We introduce the Dirac family of Fredholm operators…

Algebraic Topology · Mathematics 2012-12-10 Daniel S. Freed , Michael J. Hopkins , Constantin Teleman

The complex orthogonal and symplectic groups both act on the complete flag variety with finitely many orbits. We study two families of polynomials introduced by Wyser and Yong representing the $K$-theory classes of the closures of these…

Combinatorics · Mathematics 2020-12-02 Eric Marberg , Brendan Pawlowski

An exact Lagrangian submanifold $L$ in the symplectization of standard contact $(2n-1)$-space with Legendrian boundary $\Sigma$ can be glued to itself along $\Sigma$. This gives a Legendrian embedding $\Lambda(L,L)$ of the double of $L$…

Symplectic Geometry · Mathematics 2018-02-19 Sylvain Courte , Tobias Ekholm

We relate the version of rational Symplectic Field Theory for exact Lagrangian cobordisms introduced in [5] with linearized Legendrian contact homology. More precisely, if $L\subset X$ is an exact Lagrangian submanifold of an exact…

Symplectic Geometry · Mathematics 2009-02-26 Tobias Ekholm

A Kahler-type form is a symplectic form compatible with an integrable complex structure. Let M be either a torus or a K3-surface equipped with a Kahler-type form. We show that the homology class of any Maslov-zero Lagrangian torus in M has…

Symplectic Geometry · Mathematics 2024-05-24 Michael Entov , Misha Verbitsky

We develop Floer theory of Lagrangian torus fibers in compact symplectic toric orbifolds. We first classify holomorphic orbi-discs with boundary on Lagrangian torus fibers. We show that there exists a class of basic discs such that we have…

Symplectic Geometry · Mathematics 2014-08-01 Cheol-Hyun Cho , Mainak Poddar

We investigate an equivalence relation on Legendrian knots in the standard contact three-space defined by the existence of an interpolating zigzag of Lagrangian cobordisms. We compare this relation, restricted to genus-$0$ surfaces, to…

Symplectic Geometry · Mathematics 2023-08-07 Joshua M. Sabloff , David Shea Vela-Vick , C. -M. Michael Wong , Angela Wu

For a simply-connected compact semisimple Lie group $G$ and its maximal torus $T$, we study the $A_{\infty}$-functor associated to the moment Lagrangian correspondence from the cotangent bundle $T^*G$ to the square $G/T^{-} \times G/T$. In…

Symplectic Geometry · Mathematics 2021-07-28 Hanwool Bae , Naichung Conan Leung

This is a continuation of part I in the series of the papers on Lagrangian Floer theory on toric manifolds. Using the deformations of Floer cohomology by the ambient cycles, which we call bulk deformations, we find a continuum of…

Symplectic Geometry · Mathematics 2011-03-08 Kenji Fukaya , Yong-Geun Oh , Hiroshi Ohta , Kaoru Ono

In this paper, we study geometric properties of quotient spaces of proper Lie groupoids. First, we construct a natural stratification on such spaces using an extension of the slice theorem for proper Lie groupoids of Weinstein and Zung.…

Differential Geometry · Mathematics 2015-03-17 M. J. Pflaum , H. Posthuma , X. Tang

We analyse holomorphic discs on Lagrangian SU(2)-orbits in a family of quasihomogeneous threefolds of SL(2, C), previously studied by Evans-Lekili, introducing several techniques that should be applicable to wider classes of homogeneous…

Symplectic Geometry · Mathematics 2019-08-02 Jack Smith

If a Legendrian knot $\Lambda$ in the standard contact 3-sphere bounds an orientable exact Lagrangian surface $\Sigma$ in the standard symplectic 4-ball, then the genus of $\Sigma$ is equal to the slice genus of (the smooth knot underlying)…

Symplectic Geometry · Mathematics 2018-03-16 Tolga Etgü

Using the notion of a Lagrangian covering, W. Graham and D. Vogan proposed a method of constructing representations from the coadjoint orbits for a complex semisimple Lie group $G$. When the coadjoint orbit $\calO$ is nilpotent, a…

Representation Theory · Mathematics 2009-06-03 Thomas Pietraho

We extend the sutured framework to the case of Legendrians with boundary. Using ideas from Lagrangian Floer theory, we define the cylindrical and the wrapped sutured Legendrian homologies of a pair of sutured Legendrians. They fit together…

Symplectic Geometry · Mathematics 2022-06-24 Côme Dattin

Let G be a compact connected Lie group G and T its maximal torus. The coadjoint orbit O_lambda through lambda in Lie(T)^* is canonically a symplectic manifold. Therefore we can ask the question about its Gromov width. In many known cases…

Symplectic Geometry · Mathematics 2013-03-01 Milena Pabiniak

Given a monotone Lagrangian submanifold invariant under a loop of Hamiltonian diffeomorphisms, we compute a piece of the closed-open string map into the Hochschild cohomology of the Lagrangian which captures the homology class of the loop's…

Symplectic Geometry · Mathematics 2018-01-23 Dmitry Tonkonog