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We continue, in this second article, the study of the the algebraic tools which play a role in tropical algebra. We especially examine here the polynomial algebras over idempotent semi-fields. this work is motivated by the development of…

环与代数 · 数学 2008-09-02 Dominique Castella

We introduce tropical Newton-Puiseux polynomials admitting rational exponents. A resolution of a tropical hypersurface is defined by means of a tropical Newton-Puiseux polynomial. A polynomial complexity algorithm for resolubility of a…

代数几何 · 数学 2018-11-08 Dima Grigoriev

We introduce the notion of tropical defects, certificates that a system of polynomial equations is not a tropical basis, and provide two algorithms for finding them in affine spaces of complementary dimension to the zero set. We use these…

代数几何 · 数学 2019-11-12 Paul Görlach , Yue Ren , Jeff Sommars

The tropical Grassmannian parameterizes tropicalizations of linear spaces, while the Dressian parameterizes all planes in $\TP^{n-1}$. We study these parameter spaces and we compute them explicitly for $n \leq 7$. Planes are identified with…

组合数学 · 数学 2014-12-23 Sven Herrmann , Anders Jensen , Michael Joswig , Bernd Sturmfels

We introduce tropical holonomic sequences of a given order and calculate their entropy in case of the second order.

代数几何 · 数学 2020-04-27 Dima Grigoriev

We consider the tropical variety $\mathcal{T}(I)$ of a prime ideal $I$ generated by the polynomials $f_1, ..., f_r$ and revisit the regular projection technique introduced by Bieri and Groves from a computational point of view. In…

代数几何 · 数学 2011-11-10 Kerstin Hept , Thorsten Theobald

We develop a tropical analogue of the classical double description method allowing one to compute an internal representation (in terms of vertices) of a polyhedron defined externally (by inequalities). The heart of the tropical algorithm is…

计算几何 · 计算机科学 2011-12-30 Xavier Allamigeon , Stephane Gaubert , Eric Goubault

Tropical geometry with the max-plus algebra has been applied to statistical learning models over tree spaces because geometry with the tropical metric over tree spaces has some nice properties such as convexity in terms of the tropical…

组合数学 · 数学 2021-11-02 Ruriko Yoshida , Shelby Cox

It is well known that for two univariate polynomials over complex number field the number of their common roots is equal to the order of their resultant. In this paper, we show that this fundamental relationship still holds for the tropical…

代数几何 · 数学 2017-10-11 Hoon Hong , J. Rafael Sendra

The number of positive solutions of a system of two polynomials in two variables defined in the field of real numbers with a total of five distinct monomials cannot exceed 15. All previously known examples have at most 5 positive solutions.…

代数几何 · 数学 2017-03-08 Boulos El Hilany

We study the tropicalization of intersections of plane curves, under the assumption that they have the same tropicalization. We show that the set of tropical divisors that arise in this manner is a pure dimensional balanced polyhedral…

代数几何 · 数学 2019-05-02 Yoav Len , Matthew Satriano

We consider the question of when points in tropical affine space uniquely determine a tropical hypersurface. We introduce a notion of multiplicity of points so that this question may be meaningful even if some of the points coincide. We…

代数几何 · 数学 2016-09-26 Drew Johnson

A polytrope is a tropical polytope which at the same time is convex in the ordinary sense. A $d$-dimensional polytrope turns out to be a tropical simplex, that is, it is the tropical convex hull of $d+1$ points. This statement is equivalent…

组合数学 · 数学 2010-03-24 Michael Joswig , Katja Kulas

We count the number of irreducible polynomials in several variables of a given degree over a finite field. The results are expressed in terms of a generating series, an exact formula and an asymptotic approximation. We also consider the…

代数几何 · 数学 2009-10-16 Arnaud Bodin

We introduce tropical analogues of the notion of volume of polytopes, leading to a tropical version of the (discrete) classical isoperimetric inequality. The planar case is elementary, but a higher-dimensional generalization leads to an…

组合数学 · 数学 2019-12-30 Jules Depersin , Stéphane Gaubert , Michael Joswig

We establish a characterization of the vertices of a tropical polyhedron defined as the intersection of finitely many half-spaces. We show that a point is a vertex if, and only if, a directed hypergraph, constructed from the…

组合数学 · 数学 2013-02-13 Xavier Allamigeon , Stephane Gaubert , Eric Goubault

We define the tropical moduli space of covers of a tropical line in the plane as weighted abstract polyhedral complex, and the tropical branch map recording the images of the simple ramifications. Our main result is the invariance of the…

代数几何 · 数学 2013-10-29 Arne Buchholz , Hannah Markwig

This is a guide on how to create 3d printable models of tropical surfaces, curves, and combinations thereof. It uses Polymake to construct bounded models of the tropical objects, and OpenSCAD to thicken and export them to any common 3D…

代数几何 · 数学 2023-04-21 Herbert Gangl , Yue Ren , Ziva Urbancic

We reconcile the discrepancy between the complex and tropical counts of some enumerative problems reducing to positive characteristic. Each problem that we consider suggests a prime with special behaviour. Modulo this prime, the solutions…

代数几何 · 数学 2020-04-03 Marco Pacini , Damiano Testa

After endowing the space of diagrams of probability spaces with an entropy distance, we study its large-scale geometry by identifying the asymptotic cone as a closed convex cone in a Banach space. We call this cone the tropical cone, and…

动力系统 · 数学 2019-05-17 Rostislav Matveev , Jacobus W. Portegies