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This article explores special Lagrangian submanifolds in $\mathbb{CP}^3$, viewed as a nearly K\"ahler manifold, from two different perspectives. Intrinsically, using a moving frame set-up, and extrinsically, using $\mathrm{SU}(2)$…

Differential Geometry · Mathematics 2022-12-28 Benjamin Aslan

In this paper we prove several lifting theorems for morphisms of tropical curves. We interpret the obstruction to lifting a finite harmonic morphism of augmented metric graphs to a morphism of algebraic curves as the non-vanishing of…

Algebraic Geometry · Mathematics 2016-01-20 Omid Amini , Matthew Baker , Erwan Brugallé , Joseph Rabinoff

The supersymmetric Lagrangian compatible with the presence of torsion in the background spacetime requires, in addition to the minimal coupling, an interaction between the spin and the torsion of the form ${1/2}…

High Energy Physics - Theory · Physics 2016-08-25 Osvaldo Chandia , Jorge Zanelli

Mirror symmetry suggests that on a Calabi-Yau 3-fold moduli spaces of stable bundles, especially those with degree zero and indivisible Chern class, might be smooth (i.e. unobstructed, though perhaps of too high a dimension). This is…

Algebraic Geometry · Mathematics 2016-05-10 R. P. Thomas

In this paper we construct all smooth torus fibres of the generalized special Lagrangian torus fibrations for Calabi-Yau hypersurfaces in toric varieties near the large complex limit.

Differential Geometry · Mathematics 2007-05-23 Wei-Dong Ruan

We introduce the notion of tropical Lagrangian multi-sections over a fan and study its relation with toric vector bundles. We also introduce a "SYZ-type" construction for toric vector bundles which gives a reinterpretation of Kaneyama's…

Algebraic Geometry · Mathematics 2023-11-08 Yat-Hin Suen

Fixing a weakly unobstructed Lagrangian torus in a symplectic manifold X, we define a holomorphic function W known as the Floer potential. We construct a canonical A-infinity functor from the Fukaya category of X to the category of matrix…

Symplectic Geometry · Mathematics 2016-10-03 Cheol-Hyun Cho , Hansol Hong , Siu-Cheong Lau

We prove in this article that given a linearly concave domain $D$ in the projective space $\Bbb{CP}^{n}$, a 1-dimensional comlex analytic set $V$ in $D$, and a meromorphic 1-form $\phi$ on $V$, $V$ is a subset of an algebraic variety of…

Differential Geometry · Mathematics 2010-10-05 Stephane Collion

We construct a family of Lagrangian submanifolds in the complex sphere with a SO(n)-invariance property. Among them we find those which are special Lagrangian with respect with the Calabi-Yau structure defined by the Stenzel metric.

Differential Geometry · Mathematics 2007-05-23 Henri Anciaux

We provide some new local obstructions to approximating tropical curves in smooth tropical surfaces. These obstructions are based on the relation between tropical and complex intersection theories which is also established here. We give two…

Algebraic Geometry · Mathematics 2014-04-23 Erwan Brugalle , Kristin M. Shaw

In this paper, we construct the ADHM quiver representations and the corresponding sheaves as the mirror objects of formal deformations of the framed immersed Lagrangian sphere decorated with flat bundles. More generally, we construct…

Algebraic Geometry · Mathematics 2024-12-20 Jiawei Hu , Siu-Cheong Lau , Ju Tan

We construct a Lagrangian submanifold, inside the cotangent bundle of a real torus, which we call a Lagrangian pair of pants. It is given as the graph of the differential of a smooth function defined on the real blow up of a Lagrangian…

Symplectic Geometry · Mathematics 2023-02-13 Diego Matessi

For a class of maximally degenerate families of Calabi-Yau hypersurfaces of complex projective space, we study associated non-Archimedean and tropical Monge-Amp\`ere equations, taking place on the associated Berkovich space, and the…

Differential Geometry · Mathematics 2024-01-05 Jakob Hultgren , Mattias Jonsson , Enrica Mazzon , Nicholas McCleerey

Recently Abouzaid, Auroux, Efimov, Katzarkov and Orlov showed that the wrapped Fukaya Categories of punctured spheres and finite unbranched covers of punctured spheres are derived equivalent to the categories of singularities of a…

Algebraic Geometry · Mathematics 2013-11-13 Raf Bocklandt

This paper gives a new way of constructing Landau-Ginzburg mirrors using deformation theory of Lagrangian immersions motivated by the works of Seidel, Strominger-Yau-Zaslow and Fukaya-Oh-Ohta-Ono. Moreover we construct a canonical functor…

Symplectic Geometry · Mathematics 2015-03-17 Cheol-Hyun Cho , Hansol Hong , Siu-Cheong Lau

In this paper, we provide new examples of 1-obstructed and atomic sheaves on an infinite series of locally complete families of projective hyper-K\"ahler manifolds. More precisely, (1) we prove that the fixed loci of the natural…

Algebraic Geometry · Mathematics 2025-07-21 Hanfei Guo , Zhiyu Liu

Complex Ricci-flat (i.e., Calabi-Yau) hypersurfaces in spaces admitting a maximal (toric) $U(1)^n$ gauge symmetry of general type (encoded by certain non-convex and multi-layered multitopes) may degenerate, but can be smoothed by rational…

High Energy Physics - Theory · Physics 2025-01-22 Tristan Hübsch

Given a compact Lagrangian submanifold $L$ of a symplectic manifold $(M,\omega)$, Fukaya, Oh, Ohta and Ono construct a filtered $A_\infty$-algebra $\mathcal{F}(L)$, on the cohomology of $L$, which we call the Fukaya algebra of $L$. In this…

Symplectic Geometry · Mathematics 2022-07-12 Lino Amorim

For every field $F$ which has a quadratic extension $E$ we show there are non-metabelian infinite-dimensional thin graded Lie algebras all of whose homogeneous components, except the second one, have dimension $2$. We construct such Lie…

Rings and Algebras · Mathematics 2021-01-29 M. Avitabile , A. Caranti , N. Gavioli , V. Monti , M. F. Newman , E. A. O'Brien

We prove that for any element in the $\gamma$-completion of the space of smooth compact exact Lagrangian submanifolds of a cotangent bundle, if its $\gamma$-support is a smooth Lagrangian submanifold, then the element itself is a smooth…

Symplectic Geometry · Mathematics 2025-04-22 Tomohiro Asano , Stéphane Guillermou , Yuichi Ike , Claude Viterbo