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In this paper, we give a tropical method for computing Gromov-Witten type invariants of Fano manifolds of special type. This method applies to those Fano manifolds which admit toric degenerations to toric Fano varieties with singularities…

代数几何 · 数学 2010-01-19 Takeo Nishinou

We compute Gromov-Witten invariants of any genus for del Pezzo surfaces of degree $\ge2$. The genus zero invariants have been computed a long ago, Gromov-Witten invariants of any genus for del Pezzo surfaces of degree $\ge3$ have been found…

代数几何 · 数学 2014-04-25 M. Shoval , E. Shustin

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…

辛几何 · 数学 2018-02-27 Penka Georgieva , Aleksey Zinger

We establish refinements of the classical Kato inequality for sections of a vector bundle which lie in the kernel of a natural injectively elliptic first-order linear differential operator. Our main result is a general expression which…

微分几何 · 数学 2007-05-23 David M. J. Calderbank , Paul Gauduchon , Marc Herzlich

We introduce new polynomial isotopy invariants for closed braids. They are constructed as polynomial valued {\em Gauss diagram 1-cocycles} evaluated on the full rotation of the closed braid $\hat \beta$ around the core of the corresponding…

几何拓扑 · 数学 2018-04-11 Thomas Fiedler

We establish the existence of a symmetry within the Gromov-Witten theory of $\mathbb{CP}^n$ and its blowup along points. The nature of this symmetry is encoded in the Cremona transform and its resolution, which lives on the toric variety of…

代数几何 · 数学 2025-01-07 Amin Gholampour , Dagan Karp , Sam Payne

We study Thurston equivalence classes of quadratic post-critically finite branched coverings. For these maps, we introduce and study invariant spanning trees. We give a computational procedure for searching for invariant spanning trees.…

动力系统 · 数学 2021-01-08 Anastasia Shepelevtseva , Vladlen Timorin

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…

代数几何 · 数学 2022-04-12 Murad Alim , Arpan Saha

This is an overview of some of the invariants that were discovered by Welschinger in the context of enumerative real algebraic geometry. Their definition finds a natural setup in real symplectic geometry. In particular, they can be studied…

辛几何 · 数学 2011-10-26 Alexandru Oancea

We characterize transversality, non-transversality properties on the moduli space of genus 0 stable maps to a rational projective surface. If a target space is equipped with a real structure, i.e, anti-holomorphic involution, then the…

代数几何 · 数学 2011-11-10 Seongchun Kwon

Quadratic Gromov--Witten invariants allow one to obtain an arithmetically meaningful count of curves satisfying constraints over a field $k$ without assuming that $k$ is the field of complex or real numbers. This paper studies the behavior…

代数几何 · 数学 2025-06-24 Erwan Brugallé , Kirsten Wickelgren

This article is a follow up of the previous article of the authors on the analytic surgery of eta- and rho-invariants. We investigate in detail the (Atiyah-Patodi-Singer)-rho-invariant for manifolds with boundary. First we generalize the…

微分几何 · 数学 2014-10-01 Paul Kirk , Matthias Lesch

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 · 数学 2008-02-03 Bernd Siebert

We introduce new skein invariants of links based on a procedure where we first apply the skein relation only to crossings of distinct components, so as to produce collections of unlinked knots. We then evaluate the resulting knots using a…

几何拓扑 · 数学 2019-04-04 Louis H. Kauffman , Sofia Lambropoulou

We work in the reduced SU(N,K) modular category as constructed recently by Blanchet. We define spin type and cohomological refinements of the Turaev-Viro invariants of closed oriented 3-manifolds and give a formula relating them to…

几何拓扑 · 数学 2007-05-23 Anna Beliakova

For any smooth complex projective variety X and smooth very ample hypersurface Y in X, we develop the technique of genus zero relative Gromov-Witten invariants of Y in X in algebro-geometric terms. We prove an equality of cycles in the Chow…

代数几何 · 数学 2007-05-23 Andreas Gathmann

We define the one-leg orbifold topological vertex in refined Gromov-Witten theory \cite{BS24}. There are two cases where the leg is effective or gerby. The main result of this paper is the computation of the effective case. In the smooth…

代数几何 · 数学 2026-01-27 Jinghao Yu , Zhengyu Zong

We study the stationary descendant Gromov-Witten theory of toric surfaces by combining and extending a range of techniques - tropical curves, floor diagrams, and Fock spaces. A correspondence theorem is established between tropical curves…

代数几何 · 数学 2020-03-31 Renzo Cavalieri , Paul Johnson , Hannah Markwig , Dhruv Ranganathan

It is possible to construct distinct polyfolds which model a given moduli space problem in subtly different ways. These distinct polyfolds yield invariants which, a priori, we cannot assume are equivalent. We provide a general framework for…

辛几何 · 数学 2020-01-01 Wolfgang Schmaltz

We compute the local Gromov-Witten invariants of certain configurations of rational curves in a Calabi-Yau threefold. These configurations are connected subcurves of the `minimal trivalent configuration', which is a particular tree of P^1's…

代数几何 · 数学 2009-02-26 Dagan Karp , Chiu-Chu Melissa Liu , Marcos Marino