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We prove that the tropical surface of the root system $A_{n-1}$ has degree $\frac{1}{2}n (n-1)(n-2)$.

Combinatorics · Mathematics 2024-06-19 Federico Ardila-Mantilla , Mont Cordero-Aguilar

We study the notion of singular tropical hypersurfaces of any dimension. We characterize the singular points in terms of tropical Euler derivatives and we give an algorithm to compute all singular points. We also describe non-transversal…

Algebraic Geometry · Mathematics 2015-03-17 Alicia Dickenstein , Luis F. Tabera

Using elementary ideas from Tropical Geometry, we assign a a tropical curve to every $q$-holonomic sequence of rational functions. In particular, we assign a tropical curve to every knot which is determined by the Jones polynomial of the…

Geometric Topology · Mathematics 2010-06-17 Stavros Garoufalidis

Already for bivariate tropical polynomials, factorization is an NP-Complete problem. In this paper, we give an efficient algorithm for factorization and rational factorization of a rich class of tropical polynomials in $n$ variables.…

Combinatorics · Mathematics 2019-12-10 Bo Lin , Ngoc Mai Tran

A polynomial complexity algorithm is designed which tests whether a point belongs to a given tropical linear variety.

Symbolic Computation · Computer Science 2018-11-08 Dima Grigoriev

In this paper, we consider weighted counts of tropical plane curves of particular combinatorial type through a certain number of generic points. We give a criterion, derived from tropical intersection theory on the secondary fan, for a…

Algebraic Geometry · Mathematics 2012-06-18 Eric Katz

Tropical refined invariants of toric surfaces constitute a fascinating interpolation between real and complex enumerative geometries via tropical geometry. They were originally introduced by Block and G\"ottsche, and further extended by…

Combinatorics · Mathematics 2022-03-21 Erwan Brugallé , Andrés Jaramillo Puentes

Tropical geometry gives a bound on the ranks of divisors on curves in terms of the combinatorics of the dual graph of a degeneration. We show that for a family of examples, curves realizing this bound might only exist over certain…

Algebraic Geometry · Mathematics 2018-06-18 Dustin Cartwright

Tropical geometry has recently found several applications in the analysis of neural networks with piecewise linear activation functions. This paper presents a new look at the problem of tropical polynomial division and its application to…

Machine Learning · Computer Science 2023-06-28 Ioannis Kordonis , Petros Maragos

In this work, we examine the process of Tropical Polynomial Division, a geometric method which seeks to emulate the division of regular polynomials, when applied to those of the max-plus semiring. This is done via the approximation of the…

Machine Learning · Computer Science 2019-12-02 Georgios Smyrnis , Petros Maragos

Motivated by the problem of counting finite BPS webs, we count certain immersed metric graphs, tripods, on the flat torus. Classical Euclidean geometry turns this into a lattice point counting problem in $\mathbb C^2$, and we give an…

Geometric Topology · Mathematics 2023-10-12 Jayadev S. Athreya , David Aulicino , Harry Richman

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 complex algebraic geometry, the problem of enumerating plane elliptic curves of given degree with fixed complex structure has been solved by R.Pandharipande using Gromov-Witten theory. In this article we treat the tropical analogue of…

Algebraic Geometry · Mathematics 2009-12-17 Michael Kerber , Hannah Markwig

In this paper we fully describe all tropical linear mappings in the tropical projective plane, that is, maps from the tropical plane to itself given by tropical multiplication by an order 3 matrix. An erratum has been added fixing two…

Algebraic Geometry · Mathematics 2011-01-24 M. J. de la Puente

Floor diagrams are a class of weighted oriented graphs introduced by E. Brugalle and the second author. Tropical geometry arguments lead to combinatorial descriptions of (ordinary and relative) Gromov-Witten invariants of projective spaces…

Algebraic Geometry · Mathematics 2010-01-18 Sergey Fomin , Grigory Mikhalkin

For certain tropical quartic curves the existing techniques could not predict the lifting behavior of their bitangents over the real numbers. We close this gap by using patchworking techniques. Further, this paper provides an analysis of…

Algebraic Geometry · Mathematics 2025-03-31 Alheydis Geiger

We propose a generalization of tropical curves by dropping the rationality and integrality requirements while preserving the balancing condition. An interpretation of such curves as critical points of a certain quadratic functional allows…

Algebraic Geometry · Mathematics 2018-12-04 Sergei Lanzat , Michael Polyak

In tropical geometry, one studies algebraic curves using combinatorial techniques via the tropicalization procedure. The tropicalization depends on a map to an algebraic torus and the combinatorial methods are most useful when the…

Algebraic Geometry · Mathematics 2022-12-07 Trevor Gunn , Philipp Jell

The first secant variety of a projective monomial curve is a threefold with an action by a one-dimensional torus. Its tropicalization is a three-dimensional fan with a one-dimensional lineality space, so the tropical threefold is…

Algebraic Geometry · Mathematics 2011-09-13 Maria Angelica Cueto , Shaowei Lin

We present two effective tools for computing the positive tropicalization of algebraic varieties. First, we outline conditions under which the initial ideal can be used to compute the positive tropicalization, offering a real analogue to…

Algebraic Geometry · Mathematics 2025-07-31 Kemal Rose , Máté L. Telek
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