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Related papers: Logarithmic Gromov-Witten theory with expansions

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We study the reduced descendent Gromov-Witten theory of K3 surfaces in primitive curve classes. We present a conjectural closed formula for the stationary theory, which generalizes the Bryan-Leung formula. We also prove a new recursion that…

Algebraic Geometry · Mathematics 2025-12-10 Georg Oberdieck

In this survey on local additive invariants of real and complex definable singular germs we systematically present classical or more recent invariants of different nature as emerging from a tame degeneracy principle. For this goal, we…

Algebraic Geometry · Mathematics 2013-11-01 Georges Comte

We present an approach to Gromov-Witten invariants that works on arbitrary (closed) symplectic manifolds. We avoid genericity arguments and take into account singular curves in the very formulation. The method is by first endowing mapping…

dg-ga · Mathematics 2008-02-03 Bernd Siebert

In this paper we compute certain two-point integrals over a moduli space of stable maps into projective space. Computation of one-point analogues of these integrals constitutes a proof of mirror symmetry for genus-zero one-point…

Algebraic Geometry · Mathematics 2007-08-02 Aleksey Zinger

We derive a formula for the virtual class of the moduli space of rubber maps to $[\mathbb{P}^1/G]$ pushed forward to the moduli space of stable maps to $BG$. As an application, we show that the Gromov-Witten theory of $[\mathbb{P}^1/G]$…

Algebraic Geometry · Mathematics 2020-08-04 Hsian-Hua Tseng , Fenglong You

For local Calabi-Yau manifolds which are total spaces of vector bundle over balloon manifolds, we propose a formal definition of reduced Genus one Gromov-Witten invariants, by assigning contributions from the refined decorated rooted trees.…

Algebraic Geometry · Mathematics 2015-01-28 Xiaowen Hu

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

In general, a Kobayashi-Hitchin correspondence establishes an isomorphism between a moduli space of stable algebraic geometric objects and a moduli space of solutions of a certain (generalized) Hermite-Einstein equation. We believe that,…

Differential Geometry · Mathematics 2007-05-23 Ch. Okonek , A. Teleman

For a smooth projective surface $X$ satisfying $H_1(X,\mathbb{Z}) = 0$ and $w \in H^2(X,\mu_r)$, we study deformation invariants of the pair $(X,w)$. Choosing a Brauer-Severi variety $Y$ (or, equivalently, Azumaya algebra $\mathcal{A}$)…

Algebraic Geometry · Mathematics 2025-04-09 D. van Bree , A. Gholampour , Y. Jiang , M. Kool

We introduce classes of graphs with bounded expansion as a generalization of both proper minor closed classes and degree bounded classes. Such classes are based on a new invariant, the greatest reduced average density (grad) of G with rank…

Combinatorics · Mathematics 2007-05-23 Jaroslav Nesetril , Patrice Ossona De Mendez

As shown in a previous paper, certain naturally arising cones of holomorphic vector bundle sections over the main component $\ov\M_{1,k}^0(\P,d)$ of the moduli space of stable genus-one holomorphic maps into $\P$ have a well-defined euler…

Algebraic Geometry · Mathematics 2007-05-23 Jun Li , Aleksey Zinger

We introduce a variant of stable logarithmic maps, which we call punctured logarithmic maps. They allow an extension of logarithmic Gromov-Witten theory in which marked points have a negative order of tangency with boundary divisors. As a…

Algebraic Geometry · Mathematics 2024-10-01 Dan Abramovich , Qile Chen , Mark Gross , Bernd Siebert

Even dimensional complete intersections $X$ of two quadrics in projective space are exceptional from the point of view of the Gromov-Witten theory: they are (together with qubic surfaces) the only complete intersections whose Gromov-Witten…

Algebraic Geometry · Mathematics 2025-12-23 Danil Gubarevich

A Kuranishi atlas is a structure used to build a virtual fundamental class on moduli spaces of $J$-holomorphic curves. They were introduced by McDuff and Wehrheim to resolve some of the challenges in this field. This paper completes the…

Symplectic Geometry · Mathematics 2016-01-18 Robert Castellano

A homology class $d \in H_2(X)$ of a complex flag variety $X = G/P$ is called a line degree if the moduli space $\overline{M}_{0,0}(X,d)$ of 0-pointed stable maps to $X$ of degree $d$ is also a flag variety $G/P'$. We prove a quantum equals…

Algebraic Geometry · Mathematics 2024-09-17 Anders S. Buch , Linda Chen , Weihong Xu

Let $X$ be a smooth complex projective algebraic variety. Let $\mathcal{G}$ be a $G$-banded gerbe with $G$ a finite abelian group. We prove an exact formula expressing genus $g$ orbifold Gromov-Witten invariants of $\mathcal{G}$ in terms of…

Algebraic Geometry · Mathematics 2011-02-02 Elena Andreini , Yunfeng Jiang , Hsian-Hua Tseng

In a previous paper we described a natural closed subset of the moduli space of stable genus-one J-holomorphic maps into a symplectic manifold X. In this paper we generalize the definition of the main component to moduli spaces of…

Symplectic Geometry · Mathematics 2011-11-29 Aleksey Zinger

In this paper, we propose a geometrical approach to mirror computation of genus 0 Gromov-Witten invariants of CP^2. We use multi-point virtual structure constants, which are defined as intersection numbers of a compact moduli space of quasi…

Algebraic Geometry · Mathematics 2014-05-16 Masao Jinzenji , Masahide Shimizu

The study of open/closed string duality and large $N$ duality suggests a Gromov-Witten theory for conifolds that sits on the border of both a closed Gromov-Witten theory and an open Gromov-Witten theory. In this work we employ the result of…

Algebraic Geometry · Mathematics 2007-05-23 Chien-Hao Liu , Shing-Tung Yau

We investigate the effect of a general toric wall crossing on genus zero Gromov-Witten theory. Given two complete toric orbifolds $X_+$ and $X_-$ related by wall crossing under variation of GIT, we prove that their respective $I$-functions…

Algebraic Geometry · Mathematics 2017-02-21 Pedro Acosta , Mark Shoemaker