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The moduli space $M_g^{trop}$ of tropical curves of genus $g$ is a generalized cone complex that parametrizes metric vertex-weighted graphs of genus $g$. For each such graph $\Gamma$, the associated canonical linear system $\vert…

Algebraic Geometry · Mathematics 2018-02-19 Bo Lin , Martin Ulirsch

We use ideas from the Strominger--Yau--Zaslow conjecture and microlocal sheaf theory to define graded modules associated with permissible $C^{\infty}$-divisors on compact tropical manifolds. A $C^{\infty}$-divisor is a generalization of a…

Algebraic Geometry · Mathematics 2023-06-22 Yuki Tsutsui

In this note we study the action of the pentagram map on the moduli space of twisted polygons. The action with respect to the canonical coordinate turns out to be applicable to the framework of tropical geometry. As an application, we…

Metric Geometry · Mathematics 2014-05-02 Tsuyoshi Kato

Slicing a module into semisimple ones is useful to study modules. Loewy structures provide a means of doing so. To establish the Loewy structures of projective modules over a finite dimensional symmetric algebra over a field $F$, the…

Rings and Algebras · Mathematics 2020-08-11 Taro Sakurai

To quantify the geometric expressivity of transformers, we introduce a tropical geometry framework to characterize their exact spatial partitioning capabilities. By modeling self-attention as a vector-valued tropical rational map, we prove…

Machine Learning · Computer Science 2026-04-17 Ye Su , Yong Liu

Projective modules are a link between geometry and algebra as established by the theorem of Serre-Swan. In this paper, we define the super analog of projective modules and explore this link in the case of some particular super geometric…

Algebraic Geometry · Mathematics 2022-11-09 Archana Morye , Aditya Sarma Phukon , Devichandrika V

Let $F$ be a totally real number field of class number one, and let $K$ be a CM-field with $F$ as its maximal real subfield. For each positive integer $N$, we construct a class group of certain binary quadratic forms over $F$ which is…

Number Theory · Mathematics 2020-03-30 Ho Yun Jung , Ja Kyung Koo , Dong Hwa Shin , Dong Sung Yoon

Tropical polytopes are images of polytopes in an affine space over the Puiseux series field under the degree map. This viewpoint gives rise to a family of cellular resolutions of monomial ideals which generalize the hull complex of Bayer…

Combinatorics · Mathematics 2012-02-13 Mike Develin , Josephine Yu

This thesis concerns the algebraic consequences of Freyd's Generating Hypothesis, and explores the question of whether there exists a self-injective ring R that can be constructed purely algebraically that exhibits some of the known…

Algebraic Topology · Mathematics 2025-08-12 Oliver House

We investigate the notion of the C-projective dimension of a module, where C is a semidualizing module. When C=R, this recovers the standard projective dimension. We show that three natural definitions of finite C-projective dimension…

Commutative Algebra · Mathematics 2008-08-05 Ryo Takahashi , Diana White

The tropical vertex is an incarnation of mirror symmetry found by Gross, Pandharipande and Siebert. It can be applied to m-Kronecker quivers K(m) (together with a result of Reineke) to compute the Euler characteristics of the moduli spaces…

Algebraic Geometry · Mathematics 2011-11-29 Jacopo Stoppa

L\'opez de Medrano, Rinc\'on and Shaw defined the Chern classes on tropical manifolds as an extension of their theory of the Chern-Schwartz-MacPherson cycles on matroids. This makes it possible to define the Riemann-Roch number of tropical…

Algebraic Geometry · Mathematics 2024-03-29 Yuki Tsutsui

The goal of this paper is to make a connection between tropical geometry, representations of quantum affine algebras, and scattering amplitudes in physics. The connection allows us to study important and difficult questions in these areas:…

Quantum Algebra · Mathematics 2024-04-16 Nick Early , Jian-Rong Li

We describe the tropical curves in toric varieties and define the tropical Gromov-Witten invariants. We introduce amplitudes for the higher topological quantum mechanics (HTQM) on special trees and show that the amplitudes are equal to the…

High Energy Physics - Theory · Physics 2024-08-06 Andrey Losev , Vyacheslav Lysov

Complex algebraic varieties become easy piecewise-linear objects after passing to the so-called tropical limit. Geometry of these limiting objects is known as tropical geometry. In this short survey we take a look at motivation and…

Algebraic Geometry · Mathematics 2011-11-18 I. Itenberg , G. Mikhalkin

We study the algebraic structure of the semigroup of all $2 \times 2$ tropical matrices under multiplication. Using ideas from tropical geometry, we give a complete description of Green's relations and the idempotents and maximal subgroups…

Group Theory · Mathematics 2009-07-03 Marianne Johnson , Mark Kambites

There is a well known correspondence between the triangle inequality for a distance function on a finite set, and idempotency of an associated matrix over the tropical semiring. Recent research has shed new light on the structure…

Rings and Algebras · Mathematics 2012-03-13 Marianne Johnson , Mark Kambites

In this paper, we first study the Gorenstein projective/flat dimension of complexes of modules. The relation between the Gorenstein projective/flat dimension for complexes and that for modules are investigated. Then we study Tate, stable…

Rings and Algebras · Mathematics 2020-09-18 Li Liang

The notion of geometric construction is introduced. This notion allows to compare incidence configurations in the algebraic and tropical plane. We provide an algorithm such that, given a tropical instance of a geometric construction, it…

Algebraic Geometry · Mathematics 2007-10-10 Luis Felipe Tabera

For a tropical manifold of dimension n we show that the tropical homology classes of degree (n-1, n-1) which arise as fundamental classes of tropical cycles are precisely those in the kernel of the eigenwave map. To prove this we establish…

Algebraic Geometry · Mathematics 2023-06-22 Philipp Jell , Johannes Rau , Kristin Shaw