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Related papers: Tropical Donagi theorem

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We give a purely tropical analogue of Donagi's $n$-gonal construction and investigate its combinatorial properties. The input of the construction is a harmonic double cover of an $n$-gonal tropical curve. For $n = 2$ and a dilated double…

Combinatorics · Mathematics 2024-09-18 Felix Röhrle , Dmitry Zakharov

We use the tropical trigonal construction to calculate the second moment of the tropical Prym variety of all double covers $\pi:\widetilde{\Gamma}\to \Gamma$ of tropical curves of genus $g(\Gamma)\leq 4$. The answer is expressed in terms of…

Algebraic Geometry · Mathematics 2025-07-10 Dmitry Zakharov

In this paper, the tropical Nevanlinna theory is extended for piecewise polynomial continuous functions. By constructing the $n$-th Poisson-Jensen formula, the $n$-th tropical counting, proximity, and characteristic functions are…

Algebraic Geometry · Mathematics 2026-02-04 Risto Korhonen , Chengliang Tan

We investigate the tree gonality of a genus-$g$ metric graph, defined as the minimum degree of a tropical morphism from any tropical modification of the metric graph to a metric tree. We give a combinatorial constructive proof that this…

Combinatorics · Mathematics 2020-07-31 Jan Draisma , Alejandro Vargas

We introduce a simple, easy to implement, and computationally efficient tropical convolutional neural network architecture that is robust against adversarial attacks. We exploit the tropical nature of piece-wise linear neural networks by…

Machine Learning · Computer Science 2024-02-02 Kurt Pasque , Christopher Teska , Ruriko Yoshida , Keiji Miura , Jefferson Huang

We prove that the existence of a divisor of degree $3$ and Baker-Norine rank at least $1$ on a $3$-edge connected tropical curve is equivalent to the existence of a non-degenerate harmonic morphism of degree $3$ from a tropical modification…

Algebraic Geometry · Mathematics 2026-03-06 Margarida Melo , Angelina Zheng

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

Tropical Differential Algebraic Geometry considers difficult or even intractable problems in Differential Equations and tries to extract information on their solutions from a restricted structure of the input. The Fundamental Theorem of…

Inspired by Dickson's classification of regular ternary quadratic forms, we prove that there are no primitive regular $m$-gonal forms when $m$ is sufficiently large. In order to do so, we construct sequences of primes that are inert in a…

Number Theory · Mathematics 2020-05-11 Zilong He , Ben Kane

In this paper, we state the validity of Cramer's rule in a tropical context and its correspondence with classical Cramer's rule. This correspondence will allow us to prove a constructive version of Pappus' theorem conjectured in the paper…

Algebraic Geometry · Mathematics 2007-05-23 L. F. Tabera

This paper is a follow-up of a previous work in which we show that, for a $3$-edge connected tropical curve $\Gamma$, the existence of a divisor of degree $3$ and Baker-Norine rank at least $1$ in $\Gamma$ is equivalent to the existence of…

Algebraic Geometry · Mathematics 2025-09-12 Margarida Melo , Angelina Zheng

It often happens in mathematics that one and the same equation is known under different names in different areas of mathematics. The famous pentagon identity appears in low-dimensional topology in different ways. In this paper, we use the…

Geometric Topology · Mathematics 2025-06-17 Gurnoor Singh

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

Tropical geometry is used to develop a new approach to the theory of discriminants and resultants in the sense of Gel'fand, Kapranov and Zelevinsky. The tropical A-discriminant, which is the tropicalization of the dual variety of the…

Algebraic Geometry · Mathematics 2007-05-23 Alicia Dickenstein , Eva Maria Feichtner , Bernd Sturmfels

We use sheaves and algebraic L-theory to construct the rational Pontryagin classes of fiber bundles with fiber R^n. This amounts to an alternative proof of Novikov's theorem on the topological invariance of the rational Pontryagin classes…

Algebraic Topology · Mathematics 2010-02-24 Andrew Ranicki , Michael Weiss

We prove the following "linkage" theorem: two p-regular graphs of the same genus can be obtained from one another by a finite alternating sequence of one-edge-contractions; moreover this preserves 3-edge-connectivity. We use the linkage…

Algebraic Geometry · Mathematics 2011-11-18 Lucia Caporaso

In this paper we generalize correspondence theorems of Mikhalkin and Nishinou-Siebert providing a correspondence between algebraic and parameterized tropical curves. We also give a description of a canonical tropicalization procedure for…

Algebraic Geometry · Mathematics 2011-07-12 Ilya Tyomkin

We study Jacobian varieties for tropical curves. These are real tori equipped with integral affine structure and symmetric bilinear form. We define tropical counterpart of the theta function and establish tropical versions of the…

Algebraic Geometry · Mathematics 2011-11-09 Grigory Mikhalkin , Ilia Zharkov

In this paper we give an elementary proof of the Fundamental Theorem of Algebra for polynomials over the rational tropical semi-ring. We prove that, tropically, the rational numbers are algebraically closed. We provide a simple algorithm…

Combinatorics · Mathematics 2007-07-18 Nathan Grigg , Nathan Manwaring

This is a sequel to our work in tropical Hodge theory. Our aim here is to prove a tropical analogue of the Clemens-Schmid exact sequence in asymptotic Hodge theory. As an application of this result, we prove the tropical Hodge conjecture…

Algebraic Geometry · Mathematics 2020-12-25 Omid Amini , Matthieu Piquerez
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