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We study the moduli space of $d$-dimensional linear subspaces contained in a fixed $(d+1)$-dimensional linear variety $X$, and its tropicalization. We prove that these moduli spaces are linear subspaces themselves, and thus their…

Algebraic Geometry · Mathematics 2022-08-05 Philipp Jell , Hannah Markwig , Felipe Rincón , Benjamin Schröter

Let $g$ and $n$ be nonnegative integers and $\mathcal A=(a_0,\dots,a_n)$ a sequence of $n+1$ integers summing up to $d$. Let $\overline{\mathcal M}_{g,n+1}$ be the moduli space of $(n+1)$-pointed stable curves of genus $g$ and…

Algebraic Geometry · Mathematics 2020-12-01 Alex Abreu , Marco Pacini

Splice type surface singularities were introduced by Neumann and Wahl as a generalization of the class of Pham-Brieskorn-Hamm complete intersections of dimension two. Their construction depends on a weighted tree called a splice diagram. In…

Algebraic Geometry · Mathematics 2023-12-22 Maria Angelica Cueto , Patrick Popescu-Pampu , Dmitry Stepanov

The generalized Markov equations are deeply connected with the generalized cluster algebras of Markov type. We construct a deformed Fock-Goncharov tropicalization for the generalized Markov equations and prove that their tropicalized tree…

Number Theory · Mathematics 2025-11-19 Zhichao Chen , Zelin Jia

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

Let $\Omega$ be the complement of a connected, essential hyperplane arrangement. We prove that every dominant endomorphism of $\Omega$ extends to an endomorphism of the tropical compactification $X$ of $\Omega$ associated to the Bergman fan…

Algebraic Geometry · Mathematics 2020-06-09 Sevda Kurul , Annette Werner

We show that points in the intersection of the tropicalizations of subvarieties of a torus lift to algebraic intersection points with expected multiplicities, provided that the tropicalizations intersect in the expected dimension. We also…

Algebraic Geometry · Mathematics 2016-04-19 Brian Osserman , Sam Payne

We study the tropicalizations of analytic subvarieties of normal toric varieties over complete non-archimedean valuation fields. We show that a Zariski closed analytic subvariety of a normal toric variety is algebraic if its tropicalization…

Algebraic Geometry · Mathematics 2018-11-27 Ryota Mikami

An enumerative problem on a variety $V$ is usually solved by reduction to intersection theory in the cohomology of a compactification of $V$. However, if the problem is invariant under a "nice" group action on $V$ (so that $V$ is…

Algebraic Geometry · Mathematics 2018-02-02 Alexander Esterov

Affine Bruhat--Tits buildings are geometric spaces extracting the combinatorics of algebraic groups. The building of $\mathrm{PGL}$ parametrizes flags of subspaces/lattices in or, equivalently, norms on a fixed finite-dimensional vector…

Algebraic Geometry · Mathematics 2024-02-21 Luca Battistella , Kevin Kuehn , Arne Kuhrs , Martin Ulirsch , Alejandro Vargas

In this article we define a natural tropicalization procedure for closed subsets of log-regular varieties in the case of constant coefficients and study its basic properties. This framework allows us to generalize some of Tevelev's results…

Algebraic Geometry · Mathematics 2014-11-14 Martin Ulirsch

This paper provides a rigorous study of tropicalizations of locally symmetric varieties. We give applications beyond tropical geometry, to the cohomology of moduli spaces as well as to the cohomology of arithmetic groups. We study two cases…

Algebraic Geometry · Mathematics 2026-03-13 Eran Assaf , Madeline Brandt , Juliette Bruce , Melody Chan , Raluca Vlad

We define arroids as an abstract axiom set encoding the intersection properties of arrangements of curves. The tropicalization of the complement of arrangement of curves meeting pairwise transversely is shown to be determined by the…

Algebraic Geometry · Mathematics 2025-08-29 Edvard Aksnes

We give an elementary proof of the fact that any elliptic curve $E$ over an algebraically closed non-archimedean field $K$ with residue characteristic $\neq{2,3}$ and with $v(j(E))<0$ admits a tropicalization that contains a cycle of length…

Algebraic Geometry · Mathematics 2019-10-01 Paul Alexander Helminck

Let X be a plane in a torus over an algebraically closed field K, with tropicalization the matroidal fan Sigma. In this paper we present an algorithm which completely solves the question whether a given one-dimensional balanced polyhedral…

Algebraic Geometry · Mathematics 2014-12-10 Anna Lena Birkmeyer , Andreas Gathmann

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 use functoriality of tropicalization and the geometry of projections of subvarieties of tori to show that the fibers of the tropicalization map are dense in the Zariski topology. For subvarieties of tori over fields of generalized power…

Algebraic Geometry · Mathematics 2009-04-25 Sam Payne

The purpose of this article is to develop foundational techniques from logarithmic geometry in order to define a functorial tropicalization map for fine and saturated logarithmic schemes in the case of constant coefficients. Our approach…

Algebraic Geometry · Mathematics 2017-06-14 Martin Ulirsch

We propose a comparison between the Berkovich skeleton of Berkovich analytification of $(\overline{\textsf{M}}_{0,n},{\overline{\textsf{M}}_{0,n} \setminus \textsf{M}_{0,n}})$ and faithful tropicalization of $\textsf{M}_{0,n}$ over a…

Algebraic Geometry · Mathematics 2025-06-24 Jiachang Xu , Muyuan Zhang

The software TrIm offers implementations of tropical implicitization and tropical elimination, as developed by Tevelev and the authors. Given a polynomial map with generic coefficients, TrIm computes the tropical variety of the image. When…

Symbolic Computation · Computer Science 2010-06-22 Bernd Sturmfels , Josephine Yu
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