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We explain and generalize a recent result of Reineke-Weist by showing how to reduce it to the Gromov-Witten/Kronecker correspondence by a degeneration and blow-up. We also refine the result by working with all genera on the Gromov-Witten…

Algebraic Geometry · Mathematics 2023-03-03 Pierrick Bousseau

We use a topological framework to study descendent Gromov-Witten theory in higher genus, non-toric settings. Two geometries are considered: surfaces of general type and the Enriques Calabi-Yau threefold. We conjecture closed formulas for…

Algebraic Geometry · Mathematics 2007-05-23 D. Maulik , R. Pandharipande

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

We prove that the open Gromov-Witten invariants on K3 surfaces satisfy the Kontsevich-Soibelman wall-crossing formula. One one hand, this gives a geometric interpretation of the slab functions in Gross-Siebert program. On the other hands,…

Symplectic Geometry · Mathematics 2017-12-05 Yu-Shen Lin

We give a short direct proof for the degeneration formula of Gromov-Witten invariants including its cycle version for degenerations with smooth singular locus in the setting of minimal/basic stable log maps of Abramovich-Chen, Chen,…

Algebraic Geometry · Mathematics 2021-11-23 Bumsig Kim , Hyenho Lho , Helge Ruddat

We describe the tropical mirror for complex toric surfaces. In particular we provide an explicit expression for the mirror states and show that they can be written in enumerative form. Their holomorphic germs give an explicit form of good…

High Energy Physics - Theory · Physics 2023-11-28 Andrey Losev , Vyacheslav Lysov

Using heuristics from mirror symmetry, combinations of Gross, Hacking, Keel, Kontsevich, and Siebert have given combinatorial constructions of canonical bases of "theta functions" on the coordinate rings of various log Calabi-Yau spaces,…

Algebraic Geometry · Mathematics 2021-05-31 Travis Mandel

For a non-singular projective toric variety $X$, the virtual logarithmic Tevelev degrees are defined as the virtual degree of the morphism from the moduli stack of logarithmic stable maps $\overline{\mathcal{M}}_{\mathsf{\Gamma}}(X)$ to the…

Algebraic Geometry · Mathematics 2023-09-27 Alessio Cela , Aitor Iribar Lopez

In algebraic geometry, Gromov--Witten invariants are enumerative invariants that count the number of complex curves in a smooth projective variety satisfying some incidence conditions. In 2001, A. Givental and Y.P. Lee defined new…

Algebraic Geometry · Mathematics 2019-11-04 Alexis Roquefeuil

Using tropical geometry one can translate problems in enumerative geometry to combinatorial problems. Thus tropical geometry is a powerful tool in enumerative geometry over the complex and real numbers. Results from $\mathbb{A}^1$-homotopy…

Algebraic Geometry · Mathematics 2024-09-27 Andrés Jaramillo Puentes , Sabrina Pauli

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 show that the isolated invariant branches globalize to algebraic curves, when we consider weak toric type complex hyperbolic foliations on projective toric ambient surfaces. To do it, we pass through a characterization of weak toric type…

Algebraic Geometry · Mathematics 2019-02-14 Beatriz Molina-Samper

The paper studies intrinsic geometry in the tropical plane. Tropical structure in the real affine $n$-space is determined by the integer tangent vectors. Tropical isomorphisms are affine transformations preserving the integer lattice of the…

Algebraic Geometry · Mathematics 2024-01-10 Grigory Mikhalkin , Mikhail Shkolnikov

We give an approach for relative and degenerate Gromov--Witten invariants, inspired by that of Jun Li but replacing predeformable maps by transversal maps to a twisted target. The main advantage is a significant simplification in the…

Algebraic Geometry · Mathematics 2014-08-06 Dan Abramovich , Barbara Fantechi

Given a curve defined over an algebraically closed field which is complete with respect to a nontrivial valuation, we study its tropical Jacobian. This is done by first tropicalizing the curve, and then computing the Jacobian of the…

Algebraic Geometry · Mathematics 2017-01-13 Barbara Bolognese , Madeline Brandt , Lynn Chua

We conjecture an explicit formula for the $K$-theoretically refined Vafa-Witten invariants of the Enriques surface. By a wall-crossing argument the conjecture is equivalent to a new conjectural formula for the K-theoretically refined…

Algebraic Geometry · Mathematics 2024-08-01 Georg Oberdieck

The purpose of this paper has twofold. The first is to establish a second main theorem with truncated counting functions for algebraically nondegenerate meromorphic mappings into an arbitrary projective variety intersecting a family of…

Complex Variables · Mathematics 2019-02-27 Si Duc Quang

We prove general Cramer type theorems for linear systems over various extensions of the tropical semiring, in which tropical numbers are enriched with an information of multiplicity, sign, or argument. We obtain existence or uniqueness…

Combinatorics · Mathematics 2015-04-07 Marianne Akian , Stéphane Gaubert , Alexander Guterman

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

We investigate, using purely combinatorial methods, structural and algorithmic properties of linear equivalence classes of divisors on tropical curves. In particular, an elementary proof of the Riemann-Roch theorem for tropical curves,…

Combinatorics · Mathematics 2017-07-31 Jan Hladký , Daniel Král' , Serguei Norine