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We define topological invariants of regular Lagrangian fibrations using the integral affine structure on the base space and we show that these coincide with the classes known in the literature. We also classify all symplectic types of…

Symplectic Geometry · Mathematics 2015-05-14 D. Sepe

Let $X$ be a complex manifold, $\pi: E \rightarrow X$ a locally trivial holomorphic fibration with fiber $F$, and $\mathfrak{g}$ a Lie algebra with an invariant symmetric form. We associate to this data a holomorphic prefactorization…

Quantum Algebra · Mathematics 2019-04-08 Matt Szczesny , Jackson Walters , Brian Williams

In the second of a pair of papers, we complete the construction of Seiberg-Witten-like invariants for smooth four-manifolds equipped with broken fibrations, prove an index formula, and compute some examples.

Symplectic Geometry · Mathematics 2014-11-11 Tim Perutz

We construct fiber-preserving anti-symplectic involutions for a large class of symplectic manifolds with Lagrangian torus fibrations. In particular, we treat the K3 surface and the quintic threefold. We interpret our results as…

Symplectic Geometry · Mathematics 2012-01-19 Ricardo Castaño-Bernard , Diego Matessi , Jake P. Solomon

Almost toric manifolds form a class of singular Lagrangian fibered symplectic manifolds that is a natural generalization of toric manifolds. Notable examples include the K3 surface, the phase space of the spherical pendulum and rational…

Symplectic Geometry · Mathematics 2007-05-23 Naichung Conan Leung , Margaret Symington

The standard (Berezin-Toeplitz) geometric quantization of a compact Kaehler manifold is restricted by integrality conditions. These restrictions can be circumvented by passing to the universal covering space, provided that the lift of the…

Quantum Algebra · Mathematics 2007-05-23 Eli Hawkins

We prove a laplacian comparison theorem in the barrier sense for the function distance to the boundary of Riemannian manifolds with nonnegative Ricci curvature, area and mean curvature of the boundary bounded above. As an application we get…

Metric Geometry · Mathematics 2014-05-26 Raquel Perales

We construct quasi-projective moduli spaces of $K$-general lattice polarized irreducible holomorphic symplectic manifolds. Moreover, we study their Baily--Borel compactification and investigate a relation between one-dimensional boundary…

Algebraic Geometry · Mathematics 2015-12-08 Chiara Camere

The present authors introduced the notion of \emph{weakly unobstructed} Lagrangian submanifolds and constructed their \emph{potential function} $\mathfrak{PO}$ purely in terms of $A$-model data in [FOOO2]. In this paper, we carry out…

Symplectic Geometry · Mathematics 2019-12-19 K. Fukaya , Y. -G. Oh , H. Ohta , K. Ono

Let (M,w,L) be a symplectic manifold endowed with a lagrangian foliation L. Liberman and Weinstein have shown that the leaves of L are endowed with an affine structure. In this paper we provide links between the theories of affine manifolds…

Differential Geometry · Mathematics 2016-09-07 Tsemo Aristide

We prove that the higher direct images of the dualizing sheaf of a Lagrangian fibration between smooth projective manifolds are isomorphic to the cotangent bundles of base space. As a corollary, we obtain that every Hodge number of the base…

Algebraic Geometry · Mathematics 2016-09-07 Daisuke Matsushita

We introduce the notion of an isotropic quantum state associated with a Bohr-Sommerfeld manifold in the context of Berezin-Toeplitz quantization of general prequantized symplectic manifolds, and we study its semi-classical properties using…

Differential Geometry · Mathematics 2021-02-17 Louis Ioos

A near-symplectic structure on a 4-manifold is a closed 2-form that is symplectic away from the 1-dimensional submanifold along which it vanishes and that satisfies a certain transversality condition along this vanishing locus. We…

Symplectic Geometry · Mathematics 2007-05-23 David T. Gay , Margaret Symington

For each sphere with three orbifold points, we construct an algorithm to compute the open Gromov-Witten potential, which serves as the quantum-corrected Landau-Ginzburg mirror and is an infinite series in general. This gives the first class…

Symplectic Geometry · Mathematics 2018-05-31 Cheol-Hyun Cho , Hansol Hong , Sang-hyun Kim , Siu-Cheong Lau

Geometrization says `` any closed oriented three-manifold which is prime (not a connected sum) carries one of the eight Thurston geometries OR it has incompressible torus walls whose complementary components each carry one of four…

Geometric Topology · Mathematics 2023-09-06 Alice Kwon , Dennis Sullivan

For an integrable Hamiltonian system we construct a representation of the phase space symmetry algebra over the space of functions on a Lagrangian manifold. The representation is a result of the canonical quantization of the integrable…

Mathematical Physics · Physics 2013-07-09 Julia Bernatska , Petro Holod

Integral foliated simplicial volume is a version of simplicial volume combining the rigidity of integral coefficients with the flexibility of measure spaces. In this article, using the language of measure equivalence of groups we prove a…

Geometric Topology · Mathematics 2014-03-24 Clara Loeh , Cristina Pagliantini

In the first part of this paper we revisit a classical topological theorem by Tischler (1970) and deduce a topological result about compact manifolds admitting a set of independent closed forms proving that the manifold is a fibration over…

Symplectic Geometry · Mathematics 2021-05-26 Robert Cardona , Eva Miranda

A generalized semitoric system F:=(J,H): M --> R^2 on a symplectic 4-manifold is an integrable system whose essential properties are that F is a proper map, its set of regular values is connected, J generates an S^1-action and is not…

Symplectic Geometry · Mathematics 2013-07-30 Álvaro Pelayo , Tudor S. Ratiu , San Vũ Ngoc

For the base $B$ of a Maslov $0$ Lagrangian torus fibration with singularities consider the sheaf assigning to each $P\subset B$ the relative symplectic cohomology in degree $0$ of its pre-image. We compute this sheaf for nodal Lagrangian…

Symplectic Geometry · Mathematics 2024-07-08 Yoel Groman , Umut Varolgunes