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We use the tropical geometry approach to compute absolute and relative Gromov-Witten invariants of complex surfaces which are $\CC P^1$-bundles over an elliptic curve. We also show that the tropical multiplicity used to count curves can be…

Algebraic Geometry · Mathematics 2022-12-14 Thomas Blomme

The Chow polytope of an algebraic cycle in a torus depends only on its tropicalisation. Generalising this, we associate a Chow polytope to any abstract tropical variety in a tropicalised toric variety. Several significant polyhedra…

Algebraic Geometry · Mathematics 2010-06-01 Alex Fink

We study the geometry of tropical balls in $\mathbb{R}^n$ equipped with the tropical metric introduced by Cohen, Gaubert and Quadrat, an additive form of Hilbert's projective metric. After defining the tropical length of rectifiable curves,…

Combinatorics · Mathematics 2026-01-22 Amnon Rosenmann

Let $\left\{ Z_t \right\}_t$ be a one-parameter family of complex hypersurfaces of dimension $d \geq 1$ in a toric variety. We compute asymptotics of period integrals for $\left\{ Z_t \right\}_t$ by applying the method of…

Algebraic Geometry · Mathematics 2025-04-24 Yuto Yamamoto

Complex algebraic varieties become easy piecewise-linear objects after passing to the so-called tropical limit. Geometry of these limiting objects is known as tropical geometry. In this short survey we take a look at motivation and…

Algebraic Geometry · Mathematics 2011-11-18 I. Itenberg , G. Mikhalkin

By using Schottky uniformization theory of degenerating algebraic curves, we describe the tropical convergence of harmonic amoebas of pointed Riemann surfaces to tropical curves which are not necessarily simple. We extend Lang's results on…

Algebraic Geometry · Mathematics 2026-01-27 Takashi Ichikawa

We study a tropical analogue of the projective dual variety of a hypersurface. When $X$ is a curve in $\mathbb{P}^2$ or a surface in $\mathbb{P}^3$, we provide an explicit description of $\text{Trop}(X^*)$ in terms of $\text{Trop}(X)$, as…

Algebraic Geometry · Mathematics 2019-11-26 Nathan Ilten , Yoav Len

This is a survey on tropical polytopes from the combinatorial point of view and with a focus on algorithms. Tropical convexity is interesting because it relates a number of combinatorial concepts including ordinary convexity, monomial…

Combinatorics · Mathematics 2008-10-12 Michael Joswig

This article applies the technical framework developed in previous work by the author to discrete admissible covers and their moduli spaces. More precisely, we construct a poic-space that parameterizes the discrete admissible covers after…

Combinatorics · Mathematics 2025-06-24 Diego A. Robayo Bargans

L\'opez de Medrano, Rinc\'on and Shaw defined the Chern classes on tropical manifolds as an extension of their theory of the Chern-Schwartz-MacPherson cycles on matroids. This makes it possible to define the Riemann-Roch number of tropical…

Algebraic Geometry · Mathematics 2024-03-29 Yuki Tsutsui

The main result of this paper is a formula for the limit cycle of a 1-parameter family of subvarieties of a tropical compactification, expressed in terms of tropical intersections. Our theorem generalizes results of…

Algebraic Geometry · Mathematics 2026-04-20 Sean T. Griffin , Jake Levinson , Rohini Ramadas , Rob Silversmith

We consider tropical hemispaces, defined as tropically convex sets whose complements are also tropically convex, and tropical semispaces, defined as maximal tropically convex sets not containing a given point. We introduce the concept of…

Metric Geometry · Mathematics 2019-03-26 Ricardo D. Katz , Viorel Nitica , Sergei Sergeev

We show that the commutator relations in the refined tropical vertex group can be expressed via the enumeration of suitable real rational curves in toric surfaces.

Algebraic Geometry · Mathematics 2024-02-21 Eugenii Shustin

For a tropical manifold of dimension n we show that the tropical homology classes of degree (n-1, n-1) which arise as fundamental classes of tropical cycles are precisely those in the kernel of the eigenwave map. To prove this we establish…

Algebraic Geometry · Mathematics 2023-06-22 Philipp Jell , Johannes Rau , Kristin Shaw

To a compact tropical variety of arbitrary dimension, we associate a collection of intermediate Jacobians defined in terms of tropical homology and tropical monodromy. We then develop an Abel-Jacobi theory in the tropical setting by…

Algebraic Geometry · Mathematics 2025-04-22 Omid Amini , Daniel Corey , Leonid Monin

Elements of the tropical vertex group, introduced by Kontsevich and Soibelman, are formal families of symplectomorphisms of the 2-dimensional algebraic torus. We prove ordered product factorizations in the tropical vertex group are…

Algebraic Geometry · Mathematics 2019-12-19 Mark Gross , Rahul Pandharipande , Bernd Siebert

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

If (Q,A) is a marked polygon with one interior point, then a general polynomial f in K[x,y] with support A defines an elliptic curve C on the toric surface X_A. If K has a non-archimedean valuation into the real numbers we can tropicalize C…

Combinatorics · Mathematics 2010-03-12 Eric Katz , Hannah Markwig , Thomas Markwig

This paper is the first part in a series of three papers devoted to the study of enumerative invariants of abelian surfaces through the tropical approach. In this paper, we consider the enumeration of genus $g$ curves of fixed degree…

Algebraic Geometry · Mathematics 2024-11-27 Thomas Blomme

We study algebraic and combinatorial aspects of (classical) projections of $m$-dimensional tropical varieties onto $(m+1)$-dimensional planes. Building upon the work of Sturmfels, Tevelev, and Yu on tropical elimination as well as the work…

Algebraic Geometry · Mathematics 2010-04-23 Kerstin Hept , Thorsten Theobald
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