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We study the tropical version of the contraction morphism $\mathcal{T}$ between moduli spaces of stable and pseudostable curves. By promoting $\mathcal{T}$ to a logarithmic morphism, we obtain a piecewise linear function between the…

Algebraic Geometry · Mathematics 2024-04-04 Renzo Cavalieri , Steffen Marcus , Jonathan Wise

We introduce the notion of resultant of two planar curves in the tropical geometry framework. We prove that the tropicalization of the algebraic resultant can be used to compute the stable intersection of two tropical plane curves. It is…

Algebraic Geometry · Mathematics 2009-11-01 Luis Felipe Tabera

We give several characterizations of stable intersections of tropical cycles and establish their fundamental properties. We prove that the stable intersection of two tropical varieties is the tropicalization of the intersection of the…

Algebraic Geometry · Mathematics 2016-08-12 Anders Jensen , Josephine Yu

Tyomkin's correspondence theorem states the equality of counts of rational curves of fixed homology class in a toric surface satisfying point and cross-ratio conditions with their tropical counterparts. Such correspondence theorems allow us…

Algebraic Geometry · Mathematics 2025-08-21 Parisa Ebrahimian

We develop a framework to apply tropical and nonarchimedean analytic techniques to multiplication maps on linear series and study degenerations of these multiplications maps when the special fiber is not of compact type. As an application,…

Algebraic Geometry · Mathematics 2016-01-20 David Jensen , Sam Payne

A tropical version of Nevanlinna theory is described in which the role of meromorphic functions is played by continuous piecewise linear functions of a real variable whose one-sided derivatives are integers at every point. These functions…

Exactly Solvable and Integrable Systems · Physics 2007-07-31 R. G. Halburd , N. J. Southall

While the positive Grassmannian is deeply understood through the rich combinatorics of plabic graphs and positroid cells, its tropical counterpart, the positive tropical Grassmannian Trop$_{>0}G(k,n)$, has lacked a comparable structural…

Combinatorics · Mathematics 2026-04-29 Nick Early , Thomas Lam

Karlin's (1982) Theorem 5.2 shows that linear systems alternating between growth and mixing phases have lower asymptotic growth with greater mixing. Here this result is extended to linear differential equations that combine site-specific…

Spectral Theory · Mathematics 2010-06-17 Lee Altenberg

For Cartan geometries admitting automorphisms with isotropies satisfying a particular, loosely dynamical property on their model geometries, we demonstrate the existence of an open subset of the geometry with trivial holonomy. This…

Differential Geometry · Mathematics 2025-04-22 Jacob W. Erickson

Cartan's uniqueness theorem does not hold in general for CR mappings, but it does hold under certain conditions guaranteeing extendibility of CR functions to a fixed neighborhood. These conditions can be defined naturally for a wide class…

Complex Variables · Mathematics 2025-02-20 Jiri Lebl , Alan Noell , Sivaguru Ravisankar

Recently, the first and third author proved a correspondence theorem which recovers the Levine-Welschinger invariants of toric del Pezzo surfaces as a count of tropical curves weighted with arithmetic multiplicities. In this paper, we study…

Algebraic Geometry · Mathematics 2024-09-24 Andrés Jaramillo Puentes , Hannah Markwig , Sabrina Pauli , Felix Röhrle

We prove a $q$-refined tropical correspondence theorem for higher genus descendant logarithmic Gromov--Witten invariants with a $\lambda_g$ class in toric surfaces. Specifically, a generating series of such logarithmic Gromov--Witten…

Algebraic Geometry · Mathematics 2024-12-06 Patrick Kennedy-Hunt , Qaasim Shafi , Ajith Urundolil Kumaran

Equilibrium statistics of Hamiltonian systems is correctly described by the microcanonical ensemble, whereas canonical ones fail in the most interesting, mostly inhomogeneous, situations like phase separations or away from the thermodynamic…

Statistical Mechanics · Physics 2007-05-23 D. H. E. Gross

There are several formulations of the second law, and they may, in principle, have different domains of validity. Here a simple mathematical theorem is proven which serves as the most general basis for the second law, namely the Thomson…

Statistical Mechanics · Physics 2009-11-07 A. E. Allahverdyan , Th. M. Nieuwenhuizen

Let $M^3 \subset \mathbb{C}^2$ be a $\mathcal{C}^\omega$ Levi nondegenerate hypersurface. In the literature, Cartan-Moser chains are detected from rather advanced considerations: either from the construction of a Cartan connection…

Complex Variables · Mathematics 2020-07-09 Joel Merker

Jaramillo Puentes et al. give a Grothendieck-Witt valued floor-diagram formula for rational curves in smooth toric del Pezzo surfaces with simple and quadratic double point conditions. We study its dependence on the choice of merge…

Algebraic Geometry · Mathematics 2026-05-12 Yanis Hedjem

We establish a second main theorem for algebraic tori with slow growth moving targets with truncation to level 1. As the first application of this result, we prove the Green-Griffith-Lang conjecture for projective spaces with $n+1$…

Complex Variables · Mathematics 2021-03-31 Ji Guo , Chia-Liang Sun , Julie Tzu-Yueh Wang

We investigate various homotopy invariant formulations of commutative algebra in the context of rational homotopy theory. The main subject is the complete intersection condition, where we show that a growth condition implies a structure…

Algebraic Topology · Mathematics 2010-06-11 J. P. C. Greenlees , K. Hess , S. Shamir

We develop a holonomy reduction procedure for general Cartan geometries. We show that, given a reduction of holonomy, the underlying manifold naturally decomposes into a disjoint union of initial submanifolds. Each such submanifold…

Differential Geometry · Mathematics 2014-05-08 Andreas Cap , A. Rod Gover , Matthias Hammerl

We establish basic results of complex function theory within certain algebras of holomorphic functions on coverings of Stein manifolds (such as algebras of Bohr's holomorphic almost periodic functions on tube domains or algebras of all…

Complex Variables · Mathematics 2013-10-01 A. Brudnyi , D. Kinzebulatov
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