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In this article we provide a stack-theoretic framework to study the universal tropical Jacobian over the moduli space of tropical curves. We develop two approaches to the process of tropicalization of the universal compactified Jacobian…

Algebraic Geometry · Mathematics 2025-09-17 Margarida Melo , Samouil Molcho , Martin Ulirsch , Filippo Viviani

This thesis delves into the geometry of abstract tropical curves, exploring their complete linear system and associated tropical submodules. We establish a lower bound on the dimension of tropical submodules in terms of the Baker-Norine…

Algebraic Geometry · Mathematics 2025-06-27 Matthew Dupraz

The algebraic foundation of tropical polynomial algebra provides the framework for the geometric construction of the supplement and the reversal of tropical varieties, thereby inducing a duality of reduced tropical varieties; for classes of…

Algebraic Geometry · Mathematics 2008-11-04 Zur Izhakian , Louis Rowen

We study the classical result by Bruijn and Erd\H os regarding the bound on the number of lines determined by a $n$-point configuration in the plane, and in the light of the recently proven Tropical Sylvester-Gallai theorem, come up with a…

Algebraic Geometry · Mathematics 2020-06-09 Ayush Kumar Tewari

We define a quasimodule Q over a bounded lattice L in an analogous way as a module over a semiring is defined. The essential difference is that L need not be distributive. Also for quasimodules there can be introduced the concepts of inner…

Rings and Algebras · Mathematics 2024-11-04 Ivan Chajda , Helmut Länger

Brodsky, Joswig, Morrison and Sturmfels showed that not all abstract tropical curves of genus $3$ can be realized as a tropicalization of a quartic in the euclidean plane. In this article, we focus on the interior of the maximal cones in…

Algebraic Geometry · Mathematics 2019-05-17 Marvin Anas Hahn , Hannah Markwig , Yue Ren , Ilya Tyomkin

Tropical Geometry and Mathematical Morphology share the same max-plus and min-plus semiring arithmetic and matrix algebra. In this chapter we summarize some of their main ideas and common (geometric and algebraic) structure, generalize and…

Machine Learning · Computer Science 2019-12-10 Petros Maragos , Emmanouil Theodosis

We explore several facets of tropical subrepresentations of a linear representation of a group over the tropical semifield $\mathbb{T}$. A key role in the study of tropical subrepresentations is played by two types of modules over a…

Representation Theory · Mathematics 2024-12-02 Jaiung Jun , Kalina Mincheva , Jeffrey Tolliver

In this paper we study the structure of manifolds that contain a quasi-line and give some evidence towards the fact that the irreducible components of degenerations of the quasi-line should determine the Mori cone. We show that the…

Algebraic Geometry · Mathematics 2017-12-19 Laurent Bonavero , Andreas Höring

We show how to equip the cone complexes of toroidal embeddings with additional structure that allows to define a balancing condition for weighted subcomplexes. We then proceed to develop the foundations of an intersection theory on cone…

Algebraic Geometry · Mathematics 2018-02-07 Andreas Gross

The first steps in defining tropicalization for spherical varieties have been taken in the last few years. There are two parts to this theory: tropicalizing subvarieties of homogeneous spaces and tropicalizing their closures in spherical…

Algebraic Geometry · Mathematics 2018-02-22 Evan D. Nash

We introduce tropical complexes, as an enrichment of the dual complex of a degeneration with additional data from non-transverse intersection numbers. We define cycles, divisors, and linear equivalence on tropical complexes, analogous both…

Algebraic Geometry · Mathematics 2019-09-13 Dustin Cartwright

We provide new forbidden criterion for realizability of smooth tropical plane curves. This in turn provides us a complete classification of smooth tropical plane curves up to genus six.

Combinatorics · Mathematics 2022-03-07 Ayush Kumar Tewari

We initiate the theory of a quadratic form $q$ over a semiring $R$. As customary, one can write $$q(x+y) = q(x) + q(y)+ b(x,y),$$ where $b$ is a companion bilinear form. But in contrast to the ring-theoretic case, the companion bilinear…

Rings and Algebras · Mathematics 2015-06-12 Zur Izhakian , Manfred Knebusch , Louis Rowen

We use the theory of logarithmic line bundles to construct compactifications of spaces of roots of a line bundle on a family of curves, generalising work of a number of authors. This runs via a study of the torsion in the tropical and…

Algebraic Geometry · Mathematics 2024-06-25 David Holmes , Giulio Orecchia

We construct bordifications of the moduli spaces of tropical curves and of tropical abelian varieties, and show that the tropical Torelli map extends to their bordifications. We prove that the classical bi-invariant differential forms…

Algebraic Geometry · Mathematics 2025-03-03 Francis Brown

We introduce tropical singular intersection homologies (non-GM and GM) with the tropical coefficients on rational polyhedral spaces using their filtrations. We investigate their fundamental properties. In the non-GM case, we give a…

Algebraic Geometry · Mathematics 2026-03-30 Junta Kamiya

In this paper we describe the general theory of constructing toroidal compactifications of locally symmetric spaces and using these to compute dimension formulas for spaces of modular forms. We focus explicitly on the case of the orthogonal…

Number Theory · Mathematics 2016-10-18 Andrew Fiori

Questions that seek to determine whether a hyperplane arrangement property, be it geometric, arithmetic or topological, is of a combinatorial nature (that is determined by the intersection lattice) are abundant in the literature. To tackle…

Algebraic Geometry · Mathematics 2021-11-02 Benoît Guerville-Ballé

We study the tropical analogue of the notion of polar of a cone, working over the semiring of tropical numbers with signs. We characterize the cones which arise as polars of sets of tropically nonnegative vectors by an invariance property…

Optimization and Control · Mathematics 2024-02-29 Marianne Akian , Xavier Allamigeon , Stéphane Gaubert , Sergei Sergeev
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