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Related papers: Tropical moduli spaces of stable maps to a curve

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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

We study moduli spaces of rational weighted stable tropical curves, and their connections with the classical Hassett spaces. Given a vector w of weights, the moduli space of tropical w-stable curves can be given the structure of a balanced…

Algebraic Geometry · Mathematics 2017-06-06 Renzo Cavalieri , Simon Hampe , Hannah Markwig , Dhruv Ranganathan

We study moduli spaces of rational graphically stable tropical curves and a refinement given by radial alignment. Given a complete multipartite graph $\Gamma$, the moduli space of radially aligned $\Gamma$-stable tropical curves can be…

Combinatorics · Mathematics 2019-10-03 Andy Fry

Hurwitz numbers are a weighted count of degree d ramified covers of curves with specified ramification profiles at marked points on the codomain curve. Isomorphism classes of these covers can be included as a dense open set in a moduli…

Algebraic Geometry · Mathematics 2012-11-13 Brian Katz

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…

Algebraic Geometry · Mathematics 2013-10-29 Arne Buchholz , Hannah Markwig

We contribute to the foundations of tropical geometry with a view towards formulating tropical moduli problems, and with the moduli space of curves as our main example. We propose a moduli functor for the moduli space of curves and show…

Algebraic Geometry · Mathematics 2020-04-29 Renzo Cavalieri , Melody Chan , Martin Ulirsch , Jonathan Wise

We construct and study the tropical moduli space \(\mathcal{M}_3^{\mathrm{trop}}\) of degree-$3$ tropical rational maps \(\mathbb{T}\PP^1 \to \mathbb{T}\PP^1\) up to post-composition. Using a combinatorial description in terms of slope…

Algebraic Geometry · Mathematics 2026-05-18 Tony Shaska , Mohammad-Reza Siadat

We study the moduli space of metric graphs that arise from tropical plane curves. There are far fewer such graphs than tropicalizations of classical plane curves. For fixed genus $g$, our moduli space is a stacky fan whose cones are indexed…

Combinatorics · Mathematics 2015-07-31 Sarah Brodsky , Michael Joswig , Ralph Morrison , Bernd Sturmfels

Hassett's moduli spaces of weighted stable curves form an important class of alternate modular compactifications of the moduli space of smooth curves with marked points. In this article we define a tropical analogue of these moduli spaces…

Algebraic Geometry · Mathematics 2017-05-17 Martin Ulirsch

We construct the moduli spaces of tropical curves and tropical principally polarized abelian varieties, working in the category of (what we call) stacky fans. We define the tropical Torelli map between these two moduli spaces and we study…

Algebraic Geometry · Mathematics 2010-11-24 Silvia Brannetti , Margarida Melo , Filippo Viviani

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

Given a lattice polygon, we study the moduli space of all tropical plane curves with that Newton polygon. We determine a formula for the dimension of this space in terms of combinatorial properties of that polygon. We prove that if this…

Algebraic Geometry · Mathematics 2025-10-01 Desmond Coles , Neelav Dutta , Sifan Jiang , Ralph Morrison , Andrew Scharf

We use a graph to define a new stability condition for algebraic moduli spaces of rational curves. We characterize when the tropical compactification of the moduli space agrees with the theory of geometric tropicalization. The…

Algebraic Geometry · Mathematics 2025-10-08 Andy Fry

This note is devoted to the definition of moduli spaces of rational tropical curves with n marked points. We show that this space has a structure of a smooth tropical variety of dimension n-3. We define the Deligne-Mumford compactification…

Algebraic Geometry · Mathematics 2007-05-23 Grigory Mikhalkin

Let $X$ be an algebraic variety and let $S$ be a tropical variety associated to $X$. We study the tropicalization map from the moduli space of stable maps into $X$ to the moduli space of tropical curves in $S$. We prove that it is a…

Algebraic Geometry · Mathematics 2016-08-01 Tony Yue Yu

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

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

In this paper we study the moduli space of the tropicalizations of Riemann surfaces. We first tropicalize a smooth pointed Riemann surface by a graph defined by its (hyperbolic) pair of pants decomposition. Then we can construct the moduli…

Algebraic Geometry · Mathematics 2020-07-30 Dali Shen

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 establish faithful tropicalisation for point configurations on algebraic tori. Building on ideas from enumerative geometry, we introduce tropical scaffolds and use them to construct a system of modular fan structures on the tropical…

Algebraic Geometry · Mathematics 2024-09-20 Navid Nabijou
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