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Related papers: Exact Lagrangian cobordism and pseudo-isotopy

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We study Lagrangian cobordism groups of closed symplectic surfaces of genus $g \geq 2$ whose relations are given by unobstructed, immersed Lagrangian cobordisms. Building upon work of Abouzaid and Perrier, we compute these cobordism groups…

Symplectic Geometry · Mathematics 2024-10-14 Dominique Rathel-Fournier

We compute the Lagrangian cobordism group of the standard symplectic 2-torus and prove that it is isomorphic to the Grothendieck group of its derived Fukaya category. The proofs use homological mirror symmetry for the 2-torus.

Symplectic Geometry · Mathematics 2015-07-21 Luis Haug

We extend the definition of Lagrangian quantum homology to monotone Lagrangian cobordism and establish its general algebraic properties. In particular we develop a relative version of Lagrangian quantum homology associated to a cobordism…

Symplectic Geometry · Mathematics 2016-02-03 Berit Singer

For a certain class of exotic contact manifolds of dimension greater than 3, we show that there is an abundance of closed exact Lagrangians in their symplectization. All of these Lagrangians are displaceable by Hamiltonian isotopy, and many…

Symplectic Geometry · Mathematics 2013-04-25 Emmy Murphy

In this paper, we study homological monodromy of a Lagrangian submanifold. We prove that homological Lagrangian monodromy is trivial if Hofer energy of a Hamiltonian isotopy is smaller than the minimum energy of J-holomorphic spheres and…

Symplectic Geometry · Mathematics 2025-02-18 Yoshihiro Sugimoto

The aim of this note is to show that the Lagrangian cobordism group of a Weinstein sector is isomorphic to its middle-dimensional singular cohomology. As an application, a geometric description of Viterbo restriction for cobordism groups is…

Symplectic Geometry · Mathematics 2025-01-28 Valentin Bosshard

In his paper "A Construction for Coisotropic Subalgebras of Lie Bialgebras", Marco Zambon gave a way to use a long root of a complex semisimple Lie biaglebra $\mathfrak{g}$ to construct a coisotropic subalgebra of $\mathfrak{g}$. In this…

Representation Theory · Mathematics 2014-09-04 Nicole Kroeger

We study some properties of decomposable exact Lagrangian cobordisms between Legendrian links in $\mathbb{R}^3$ with the standard contact structure. In particular, for any decomposable exact Lagrangian filling $L$ of a Legendrian link $K$,…

Geometric Topology · Mathematics 2015-12-29 Watchareepan Atiponrat

We present a Lagrangian for the bilinear discrete KP (or Hirota-Miwa) equation. Furthermore, we show that this Lagrangian can be extended to a Lagrangian 3-form when embedded in a higher dimensional lattice, obeying a closure relation. Thus…

Exactly Solvable and Integrable Systems · Physics 2009-06-30 S. B. Lobb , F. W. Nijhoff , G. R. W. Quispel

Given an exact Lagrangian $L$ of an exact symplectic manifold $(M,d\lambda )$, Cornea and Shelukhin recently introduced a remarkable "cobordism metric" $d_c$ on the exact Lagrangian cobordism class $\mathcal{L}(L)$ of $L$. In this note we…

Symplectic Geometry · Mathematics 2016-08-23 Mads R. Bisgaard

The explicit form of the Wess-Zumino term of the PST super 5-brane Lagrangian in 11 dimensions is obtained. A complete canonical analysis for a gauge fixed PST super 5-brane action reveals the expected mixture of first and second class…

High Energy Physics - Theory · Physics 2007-05-23 A. De Castro , A. Restuccia

Let $L$ be a special Lagrangian submanifold of a compact, Calabi-Yau manifold $M$ with boundary lying on the symplectic, codimension 2 submanifold $W$. It is shown how deformations of $L$ which keep the boundary of $L$ confined to $W$ can…

Differential Geometry · Mathematics 2007-05-23 Adrian Butscher

Let $X$ be any subanalytic compact pseudomanifold. We show a De Rham theorem for $L^\infty$ forms. We prove that the cohomology of $L^\infty$ forms is isomorphic to intersection cohomology in the maximal perversity.

Algebraic Geometry · Mathematics 2012-07-09 Guillaume Valette

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

We describe isotropic orbits for the restricted action of a subgroup of a Lie group acting on a symplectic manifold by Hamiltonian symplectomorphisms and admitting an Ad*-equivariant moment map. We obtain examples of Lagrangian orbits of…

Symplectic Geometry · Mathematics 2020-08-05 Elizabeth Gasparim , Luiz A. B. San Martin , Fabricio Valencia

We prove a relative isoperimetric inequalities for Lagrangian half disks in $\mathbb{C}^2$ with respect to a Lagrangian plane, or a complex plane, or a union of any two of Lagrangian or complex planes that intersect transversally at the…

Differential Geometry · Mathematics 2012-01-23 Sung Ho Wang

We show that, up to Lagrangian isotopy, there is a unique Lagrangian torus inside each of the following uniruled symplectic four-manifolds: the symplectic vector space $\mathbb{R}^4$, the projective plane $\mathbb{C}P^2$, and the monotone…

Symplectic Geometry · Mathematics 2016-11-08 Georgios Dimitroglou Rizell , Elizabeth Goodman , Alexander Ivrii

We construct five-dimensional non-Lorentzian Lagrangian gauge field theories with an SU(1,3) conformal symmetry and 12 (conformal) supersymmetries. Such theories are interesting in their own right but can arise from six-dimensional (1,0)…

High Energy Physics - Theory · Physics 2021-03-17 Neil Lambert , Tristan Orchard

We investigate symplectic nilpotent Lie groups with Lagrangian normal subgroups. We show that there exists a bijection between the isomorphism classes of nilpotent Lie groups with Lagrangian normal subgroups and the isomorphism classes of…

Symplectic Geometry · Mathematics 2026-01-27 T. Aït Aissa , M. W. Mansouri

We study exact Lagrangian cobordisms between exact Lagrangians in a cotangent bundle in the sense of Arnol'd, using microlocal theory of sheaves. We construct a sheaf quantization for an exact Lagrangian cobordism between Lagrangians with…

Symplectic Geometry · Mathematics 2025-04-22 Tomohiro Asano , Yuichi Ike , Wenyuan Li