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This paper introduces a concrete relation between genus zero closed Gromov-Witten invariants of Calabi-Yau threefolds and genus zero open Gromov-Witten invariants of a Lagrangian $A$-brane in the same threefold. Symplectic cutting is a…

High Energy Physics - Theory · Physics 2025-01-13 Luca Cassia , Pietro Longhi , Maxim Zabzine

We introduce the process of symplectic reduction along a submanifold as a uniform approach to taking quotients in symplectic geometry. This construction holds in the categories of smooth manifolds, complex analytic spaces, and complex…

Symplectic Geometry · Mathematics 2021-07-08 Peter Crooks , Maxence Mayrand

We prove that shifted cotangent stacks carry a canonical shifted symplectic structure. We also prove that shifted conormal stacks carry a canonical Lagrangian structure. These results were believed to be true but no written proof was…

Algebraic Geometry · Mathematics 2019-04-10 Damien Calaque

This work focuses on approximation and generation for the derived category of complexes with quasi-coherent cohomology on algebraic stacks. Our methods establish that approximation by compact objects descends along covers that are…

Algebraic Geometry · Mathematics 2025-05-01 Jack Hall , Alicia Lamarche , Pat Lank , Fei Peng

Certain dissipative physical systems closely resemble Hamiltonian systems in $\mathbb{R}^{2n}$, but with the canonical equation for one of the variables in each conjugate pair rescaled by a real parameter. To generalise these dynamical…

Symplectic Geometry · Mathematics 2017-08-08 David S. Tourigny

We give a new construction of strict deformation quantization of symplectic manifolds equipped with a proper Lagrangian fiber bundle structure, whose representation spaces are the quantum Hilbert spaces obtained by geometric quantization.…

Symplectic Geometry · Mathematics 2020-03-19 Mayuko Yamashita

We introduce a notion of coisotropics on 1-shifted symplectic Lie groupoids (i.e. quasi-symplectic groupoids) using twisted Dirac structures and show that it satisfies properties analogous to the corresponding derived-algebraic notion in…

Symplectic Geometry · Mathematics 2025-06-06 Maxence Mayrand

We study Milnor fibers and symplectic fillings of links of sandwiched singularities, with the goal of contrasting their algebro-geometric deformation theory and symplectic topology. In the algebro-geometric setting, smoothings of sandwiched…

Geometric Topology · Mathematics 2026-02-12 Olga Plamenevskaya , Laura Starkston

We introduce a notion of volume for an l-adic local system over an algebraic curve and, under some conditions, give a symplectic form on the rigid analytic deformation space of the corresponding geometric local system. These constructions…

Algebraic Geometry · Mathematics 2021-06-03 G. Pappas

In this article we study multisymplectic geometry, i.e., the geometry of manifolds with a non-degenerate, closed differential form. First we describe the transition from Lagrangian to Hamiltonian classical field theories, and then we…

Differential Geometry · Mathematics 2025-09-30 Leonid Ryvkin , Tilmann Wurzbacher

We present a new approach to special lagrangian geometry which works for Bohr - Sommerfeld lagrangian submanifolds of symplectic manifolds with integer symplectic forms. This leads to construction of finite dimensional moduli spaces of SBS…

Symplectic Geometry · Mathematics 2015-08-28 Nikolay A. Tyurin

A theory of dg schemes is developed so that it becomes a homotopy site, and the corresponding infinity category of stacks is equivalent to the infinity category of stacks, as constructed by Toen and Vezzosi, on the site of dg algebras whose…

Algebraic Geometry · Mathematics 2022-04-21 Dennis Borisov , Ludmil Katzarkov , Artan Sheshmani

Using techniques from the homotopy theory of derived categories and noncommutative algebraic geometry, we establish a general theory of derived microlocalization for quantum symplectic resolutions. In particular, our results yield a new…

Algebraic Geometry · Mathematics 2013-08-28 Kevin McGerty , Thomas Nevins

We give a local model for d-shifted symplectic dg-schemes, or Deligne-Mumford dg-stacks [PTVV]. Locally any such is a product of a "twisted shifted cotangent bundle", where the twist is given by an element df, with $f \in H^{1-d}(\Cal O)$,…

Algebraic Geometry · Mathematics 2013-09-10 E. Bouaziz , I. Grojnowski

We review recent results and ongoing investigations of the symplectic and Poisson geometry of derived moduli spaces, and describe applications to deformation quantization of such spaces.

Algebraic Geometry · Mathematics 2016-03-10 T. Pantev , G. Vezzosi

A classical way to construct a Lagrangian in a symplectic manifold $\Sigma$ is to let $\Sigma$ appear as a smooth fiber in a Lefschetz fibration. If this is possible the singularities of the fibration induce Lagrangian spheres in $\Sigma$…

Symplectic Geometry · Mathematics 2011-07-12 Yochay Jerby

For a derived stack obtained as a quotient of a derived affine scheme by a reductive group, we show that shifted symplectic structures can be characterized by the Cartan-de Rham complex. For non-reductive groups, we also show the analogous…

Algebraic Geometry · Mathematics 2022-02-22 Wai-Kit Yeung

Symplectic and Poisson geometry emerged as a tool to understand the mathematical structure behind classical mechanics. However, due to its huge development over the past century, it has become an independent field of research in…

Symplectic Geometry · Mathematics 2024-11-20 Ivan Contreras , Diego Martinez , Nicolas Martinez , Diego Rodriguez

We investigate Snyder space-time and its generalizations, including Yang and Snyder-de-Sitter spaces, which constitute manifestly Lorenz invariant noncommutative geometries. This work initiates a systematic study of gauge theory on such…

High Energy Physics - Theory · Physics 2025-10-16 V. G. Kupriyanov , E. L. F. de Lima

This paper is devoted to deformations of Lagrangian submanifolds contained in the singular locus of a log-symplectic manifold. We prove a normal form result for the log-symplectic structure around such a Lagrangian, which we use to extract…

Symplectic Geometry · Mathematics 2021-12-14 Stephane Geudens , Marco Zambon