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Let $(X,E)$ be a smooth log Calabi-Yau pair consisting of a smooth Fano surface $X$ and a smooth anticanonical divisor $E$. We obtain certain higher genus local Gromov-Witten invariants from the projectivization of the canonical bundle $Z…

Algebraic Geometry · Mathematics 2025-07-28 Benjamin Zhou

We prove two multivariate $q$-binomial identities conjectured by Bousseau, Brini and van Garrel [Geom. Topol. 28 (2024), 393-496, arXiv:2011.08830] which give generating series for Gromov-Witten invariants of two specific log Calabi-Yau…

Classical Analysis and ODEs · Mathematics 2024-10-11 Christian Krattenthaler

We provide a direct proof of a conjecture of Brini relating the Gromov-Witten theory of the resolved conifold to the Ablowitz-Ladik integrable hierarchy at the level of primaries. In doing so, we use a functional representation of the…

Algebraic Geometry · Mathematics 2022-04-12 Murad Alim , Arpan Saha

In this expository article, we explain how to use localization to compute Gromov-Witten invariants of smooth toric varieties and orbifold Gromov-Witten invariants of smooth toric Deligne-Mumford stacks.

Algebraic Geometry · Mathematics 2015-01-06 Chiu-Chu Melissa Liu

Using degeneration techniques, we prove the correspondence of tropical curve counts and log Gromov-Witten invariants with general incidence and psi-class conditions in toric varieties for genus zero curves and all non-superabundant…

Algebraic Geometry · Mathematics 2019-07-02 Travis Mandel , Helge Ruddat

In this paper we study the Real Gromov-Witten theory of local 3-folds over Real curves. We show that this gives rise to a 2-dimensional Klein TQFT defined on an extension of the category of unorientable surfaces. We use this structure to…

Symplectic Geometry · Mathematics 2021-10-26 Penka Georgieva , Eleny-Nicoleta Ionel

We give an interpretation of Yetter's Invariant of manifolds $M$ in terms of the homotopy type of the function space $TOP(M,B(G))$, where $G$ is a crossed module and $B(G)$ is its classifying space. From this formulation, there follows that…

Quantum Algebra · Mathematics 2017-05-23 João Faria Martins , Timothy Porter

We extend B. Hassett's theory of weighted stable pointed curves ([Has03]) to weighted stable maps. The space of stability conditions is described explicitly, and the wall-crossing phenomenon studied. This can be considered as a non-linear…

Algebraic Geometry · Mathematics 2012-04-06 Arend Bayer , Yuri I. Manin

We describe the quantum cohomology rings of a class of toric varieties. The description includes, in addition to the (already known) ring presentations, the (new) analogues for toric varieties of the sorts of quantum Giambelli formulas…

Algebraic Geometry · Mathematics 2007-05-23 Andrew Kresch

Given an action of a reductive group on a normal variety, we construct all invariant open subsets admitting a good quotient with a quasiprojective or a divisorial quotient space. Our approach extends known constructions like Mumford's…

Algebraic Geometry · Mathematics 2007-05-23 Juergen Hausen

For a balanced wall crossing in geometric invariant theory, there exist derived equivalences between the corresponding GIT quotients if certain numerical conditions are satisfied. Given such a wall crossing, I construct a perverse sheaf of…

Algebraic Geometry · Mathematics 2017-04-26 W. Donovan

Given an abelian category and a stability condition satisfying appropriate conditions, we define generalized $K$-theoretic invariants and prove that they satisfy wall-crossing formulas. For this, we introduce a new associative algebra…

Algebraic Geometry · Mathematics 2026-04-08 Ivan Karpov , Miguel Moreira

For G a finite group and X a G-space on which a normal subgroup A acts trivially, we show that the G-equivariant K-theory of X decomposes as a direct sum of twisted equivariant K-theories of X parametrized by the orbits of the conjugation…

K-Theory and Homology · Mathematics 2021-03-08 José Manuel Gómez , Bernardo Uribe

We compute various types of iterated integrals of Eisenstein-Kronecker forms that are constructed from the Kronecker theta function. Furthermore, we relate the generating series of Gromov-Witten invariants of elliptic curves to these…

Complex Variables · Mathematics 2024-03-05 Jie Zhou

We analyse the vector bundle moduli arising from generic heterotic compactifications from the point of view of quiver representations. Phenomena such as stability walls, crossing between chambers of supersymmetry, splitting of non-Abelian…

High Energy Physics - Theory · Physics 2015-06-11 Yang-Hui He , Seung-Joo Lee

We prove two tropical gluing formulae for Gromov-Witten invariants of exploded manifolds, useful for calculating Gromov-Witten invariants of a symplectic manifold using a normal-crossing degeneration. The first formula generalizes the…

Symplectic Geometry · Mathematics 2017-03-17 Brett Parker

We study the enumerative geometry of stable maps to Calabi-Yau 5-folds $Z$ with a group action preserving the Calabi-Yau form. In the central case $Z=X \times \mathbb{C}^2$, where $X$ is a Calabi-Yau 3-fold with a group action scaling the…

Algebraic Geometry · Mathematics 2024-10-02 Andrea Brini , Yannik Schuler

Motivated by the real version of the Gopakumar-Vafa conjecture for 3-folds, the authors introduced in [GI] the notion of local real Gromov-Witten invariants associated to local 3-folds over Real curves. This article is devoted to the proof…

Symplectic Geometry · Mathematics 2021-10-26 Penka Georgieva , Eleny-Nicoleta Ionel

The first part of this work constructs positive-genus real Gromov-Witten invariants of real-orientable symplectic manifolds of odd "complex" dimensions; the present part focuses on their properties that are essential for actually working…

Symplectic Geometry · Mathematics 2018-02-27 Penka Georgieva , Aleksey Zinger

Using Gromov-Witten theory the numbers of complex plane rational curves of degree d through 3d-1 general given points can be computed recursively with Kontsevich's formula that follows from the so-called WDVV equations. In this paper we…

Algebraic Geometry · Mathematics 2008-09-09 Andreas Gathmann , Hannah Markwig