English
Related papers

Related papers: Tropical M\"obius strips and ruled surfaces

200 papers

We consider ruled surfaces with finite multiplicity. We study behaviors of the striction curves and the singularities of the ruled surfaces. We also give geometric meanings of invariants related to the ruled surfaces.

Differential Geometry · Mathematics 2025-05-21 Hiroyuki Hayashi

We describe a framework to construct tropical moduli spaces of rational stable maps to a smooth tropical hypersurface or curve. These moduli spaces will be tropical cycles of the expected dimension, corresponding to virtual fundamental…

Algebraic Geometry · Mathematics 2017-05-23 Andreas Gathmann , Dennis Ochse

This thesis delves into the geometry of abstract tropical curves, exploring their complete linear system and associated tropical submodules. We establish a lower bound on the dimension of tropical submodules in terms of the Baker-Norine…

Algebraic Geometry · Mathematics 2025-06-27 Matthew Dupraz

We discuss, following Mikhalkin, Brugall\'e, and many others, the counting of curves on toric surfaces with prescribed genus, Newton polygon, and intersection pattern with the toric boundary divisor, both at assigned and unassigned points.…

Algebraic Geometry · Mathematics 2025-11-27 Thomas Dedieu

We study representations of tropical linear spaces as intersections of tropical hyperplanes of circuits. For several classes of matroids, we describe minimal tropical bases. We also show that every realizable tropical linear space has a…

Combinatorics · Mathematics 2007-05-23 Josephine Yu , Debbie S. Yuster

We construct moduli spaces of rational covers of an arbitrary smooth tropical curve in R^r as tropical varieties. They are contained in the balanced fan parametrizing tropical stable maps of the appropriate degree to R^r. The weights of the…

Algebraic Geometry · Mathematics 2017-05-24 Andreas Gathmann , Hannah Markwig , Dennis Ochse

Tropical geometry is a relatively recent field in mathematics created as a simplified model for certain problems in algebraic geometry. We introduce the definition of abstract and planar tropical curves as well as their properties,…

Algebraic Geometry · Mathematics 2019-01-15 Stanley Wang

The family of complex projective surfaces in projective three space of degree $d$ having precisely $\delta$ nodes as their only singularities has codimension $\delta$ in the linear system of surfaces of degree $d$ for sufficiently large $d$…

Algebraic Geometry · Mathematics 2019-10-22 Hannah Markwig , Thomas Markwig , Kristin Shaw , Eugenii Shustin

We introduce the notion of tropical area of a tropical curve defined in an open subset of $\mathbb R^n$. We prove that the number of vertices of a tropical curve is bounded by the area of the curve. The approach is totally elementary yet…

Combinatorics · Mathematics 2020-11-24 Tony Yue Yu

In this paper we construct a tropical moduli space parametrizing roots of divisors on tropical curves. We study the relation between this space and the skeleton of Jarvis moduli space of nets of limit roots on stable curves. We show that…

Algebraic Geometry · Mathematics 2022-08-10 Alex Abreu , Marco Pacini , Matheus Secco

We study the tropicalization of the moduli space of algebraic spin curves, exhibit its combinatorial stratification and prove that the strata are irreducible. We construct the moduli space of tropical spin curves, prove that it is…

Algebraic Geometry · Mathematics 2019-05-21 Lucia Caporaso , Margarida Melo , Marco Pacini

We construct the moduli space for equivalence classes of n-pointed tropical curves of genus g, together with its compactification given by weighted tropical curves, and establish some of its basic topological properties. We compare it to…

Algebraic Geometry · Mathematics 2011-12-23 Lucia Caporaso

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

Given a minimal surface equipped with a generically finite map to an Abelian variety, we give an optimal bound on the canonical degree of a rational or an elliptic curve. As a corollary, we obtain the finiteness of rational and elliptic…

Algebraic Geometry · Mathematics 2008-08-12 Steven S. Y. Lu

In this paper, we survey and study definitions and properties of tropical polynomials, tropical rational functions and in general, tropical meromorphic functions, emphasizing practical techniques that can really carry out computations. For…

Algebraic Geometry · Mathematics 2011-01-17 Yen-lung Tsai

We give a definition of tropical orbit spaces and their morphisms. We show that, under certain conditions, the weighted number of preimages of a point in the target of such a morphism does not depend on the choice of this point. We equip…

Algebraic Geometry · Mathematics 2009-11-10 Matthias Herold

We introduce a tropical geometric framework that allows us to define $\psi$ classes for moduli spaces of tropical curves of arbitrary genus. We prove correspondence theorems between algebraic and tropical $\psi$ classes for some…

Algebraic Geometry · Mathematics 2023-03-22 Renzo Cavalieri , Andreas Gross , Hannah Markwig

We determine explicit birational models over Q for the modular surfaces parametrising pairs of N-congruent elliptic curves in all cases where this surface is an elliptic surface. In each case we also determine the rank of the Mordell-Weil…

Number Theory · Mathematics 2018-04-27 Tom Fisher

Given a family of parameterized algebraic curves over a strictly semistable pair, we show that the simultaneous tropicalization of the curves in the family forms a family of parameterized tropical curves over the skeleton of the strictly…

Algebraic Geometry · Mathematics 2026-02-10 Karl Christ , Xiang He , Ilya Tyomkin

Tropical refined invariants for toric surfaces, introduced Block and G{\"o}ttsche, are obtained couting tropical curves with a Laurent polynomial multiplicity. Brugall{\'e} and Jaramillo-Puentes then exhibited a polynomial behavior of the…

Algebraic Geometry · Mathematics 2026-02-04 Thomas Blomme , Gurvan Mével