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The construction of partially compactified cluster algebras on coordinate rings is handled by using codimension 2 arguments on cluster covers. An analog of this in the quantum situation is highly desirable but has not been found yet. In…

Quantum Algebra · Mathematics 2025-04-22 Fan Qin , Milen Yakimov

We develop the deformation theory of symplectic foliations, i.e. regular foliations equipped with a leafwise symplectic form. The main result of this paper is that each symplectic foliation has an attached $L_\infty$-algebra controlling its…

Symplectic Geometry · Mathematics 2022-04-26 Stephane Geudens , Alfonso G. Tortorella , Marco Zambon

We investigate deformations of lagrangian manifolds with singularities. We introduce a complex similar to the de Rham-complex whose cohomology calculates deformation spaces. Examples of singular lagrangian varieties are presented and…

Algebraic Geometry · Mathematics 2007-05-23 Duco van Straten , Christian Sevenheck

We study continuous selections of the set-valued map that takes every skew-symmetric bilinear form on a vector space to its corresponding set of maximal isotropic subspaces. Applications are made to establishing continuity properties of the…

Representation Theory · Mathematics 2022-11-07 Ingrid Beltita , Daniel Beltita

Our motivation is to build a systematic method in order to investigate the structure of cluster algebras of geometric type. The method is given through the notion of mixing-type sub-seeds, the theory of seed homomorphisms and the view-point…

Rings and Algebras · Mathematics 2016-08-19 Min Huang , Fang Li , Yichao Yang

We extend recent work of the third author and Kouloukas by constructing deformations of integrable cluster maps corresponding to the Dynkin types $A_{2N}$, lifting these to higher-dimensional maps possessing the Laurent property and…

Exactly Solvable and Integrable Systems · Physics 2026-04-14 Jan E. Grabowski , Andrew N. W. Hone , Wookyung Kim

We describe a quantitative construction of almost-normal diffeomorphisms between embedded orientable manifolds with boundary to be used in the study of geometric variational problems with stratified singular sets. We then apply this…

Analysis of PDEs · Mathematics 2015-06-09 Marco Cicalese , Gian Paolo Leonardi , Francesco Maggi

We investigate new methods for generating Lagrangian cuts to solve two-stage stochastic integer programs. Lagrangian cuts can be added to a Benders reformulation, and are derived from solving single scenario integer programming subproblems…

Optimization and Control · Mathematics 2022-04-07 Rui Chen , James Luedtke

Lagrangian multiforms provide a variational framework for describing integrable hierarchies. This thesis presents two approaches for systematically constructing Lagrangian one-forms, which cover the case of finite-dimensional integrable…

Mathematical Physics · Physics 2026-02-13 Anup Anand Singh

In this paper we show how to lift Lagrangian immersions in $\mathbb{C} P^{n-1}$ to produce Lagrangian cones in $\mathbb{C} ^n$, and use this process to produce several families of examples of Lagrangian cones and special Lagrangian cones.…

Geometric Topology · Mathematics 2022-11-02 Scott Baldridge , Ben McCarty , David Shea Vela-Vick

In this paper, we provide a new construction of quiver algebroid stacks and the associated mirror functors for symplectic manifolds. First, we formulate the concept of a quiver stack, which is a geometric structure formed by gluing multiple…

Algebraic Geometry · Mathematics 2025-10-01 Siu-Cheong Lau , Junzheng Nan , Ju Tan

We establish an $h$-principle for exact Lagrangian embeddings with concave Legendrian boundary. We prove, in particular, that in the complement of the unit ball $B$ in the standard symplectic $\R^{2n}, 2n\geq 6$, there exists an embedded…

Symplectic Geometry · Mathematics 2013-03-05 Yakov Eliashberg , Emmy Murphy

The branched deformations of immersed compact special Lagrangian submanifolds are studied in this paper. If there exists a nondegenerate $\mathbb{Z}_2$ harmonic 1-form over a special Lagrangian submanifold $L$, we construct a family of…

Differential Geometry · Mathematics 2022-02-25 Siqi He

We construct smooth families of compact special Lagrangian submanifolds embedded in some toric hyper-K\"ahler manifolds, which never become holomorphic Lagrangian submanifolds via any hyper-K\"ahler rotations. These families converge to…

Differential Geometry · Mathematics 2014-10-14 Kota Hattori

A. Mironov proposed a construction of lagrangian submanifolds in $\mathbb{C}^n$ and $\mathbb{C} \mathbb{P}^n$; there he was mostly motivated by the fact that these lagrangian submanifolds (which can have in general self intersections,…

Symplectic Geometry · Mathematics 2020-05-06 Nikolai A. Tyurin

This is an introduction to cluster algebras and their common triangular bases. These bases are Kazhdan-Lusztig-type and serve as the canonical bases of cluster algebras from the representation-theoretic point of view. We review seeds…

Representation Theory · Mathematics 2025-10-01 Fan Qin

We construct a lagrangian geometric formulation for first-order field theories using the canonical structures of first-order jet bundles, which are taken as the phase spaces of the systems in consideration. First of all, we construct all…

We show that any locally planar tropical curve $\Gamma \subset \mathbb{R}^n$ (with unit edge weights) can be realized as the limit of the rescaled moment map images of a family of special Lagrangian submanifolds in $T^*T^n$ with respect to…

Differential Geometry · Mathematics 2025-09-08 Shih-Kai Chiu , Yang Li , Yu-Shen Lin

We look at how one can construct from the data of a dimer model a Lagrangian submanifold in $(\mathbb{C}^*)^n$ whose valuation projection approximates a tropical hypersurface. Each face of the dimer corresponds to a Lagrangian disk with…

Symplectic Geometry · Mathematics 2021-01-13 Jeff Hicks

We consider deformations of sequences of cluster mutations in finite type cluster algebras, which destroy the Laurent property but preserve the presymplectic structure defined by the exchange matrix. The simplest example is the Lyness…

Mathematical Physics · Physics 2021-07-27 Andrew N. W. Hone , Theodoros E. Kouloukas