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In the Gromov-Witten theory of a target curve we consider descendent integrals against the virtual fundamental class relative to the forgetful morphism to the moduli space of curves. We show that cohomology classes obtained in this way lie…

Algebraic Geometry · Mathematics 2021-03-30 Felix Janda

We introduce Gromov-Witten invariants with naive tangency conditions at the marked points of the source curve. We then establish an explicit formula which expresses Gromov-Witten invariants with naive tangency conditions in terms of…

Algebraic Geometry · Mathematics 2023-10-23 Felix Janda , Tony Yue Yu

The main goal of the present paper is to construct new invariants of knots with additional structure by adding new gradings to the Khovanov complex. The ideas given below work in the case of virtual knots, closed braids and some other cases…

Geometric Topology · Mathematics 2007-10-22 Vassily Olegovich Manturov

This is the first in a sequence of papers in which we construct a quantum version of the Kirwan map from the equivariant quantum cohomology $QH_G(X)$ of a smooth complex projective variety X with the action of a connected complex reductive…

Algebraic Geometry · Mathematics 2017-05-19 Chris T. Woodward

Let X be a smooth projective variety. The Gromov-Witten potentials of X are generating functions for the Gromov-Witten invariants of X: they are formal power series, sometimes in infinitely many variables, with Taylor coefficients given by…

Algebraic Geometry · Mathematics 2015-10-29 Tom Coates , Hiroshi Iritani

We consider the decision problem of whether a particular Gromov--Witten invariant on a partial flag variety is zero. We prove that for the $3$-pointed, genus zero invariants, this problem is in the complexity class ${\sf AM}$ assuming the…

Algebraic Geometry · Mathematics 2025-08-22 Igor Pak , Colleen Robichaux , Weihong Xu

In \cite{TY18}, higher genus Gromov--Witten invariants of the stack of $r$-th roots of a smooth projective variety $X$ along a smooth divisor $D$ are shown to be polynomials in $r$. In this paper we study the degrees and coefficients of…

Algebraic Geometry · Mathematics 2022-01-25 Hsian-Hua Tseng , Fenglong You

In this paper, we explicitly prove that statistical manifolds, related to exponential families and with flat structure connection have a Frobenius manifold structure. This latter object, at the interplay of beautiful interactions between…

Algebraic Geometry · Mathematics 2021-07-20 Noemie Combe , Philippe Combe , Hanna Nencka

Let X be a Gorenstein orbifold and let Y be a crepant resolution of X. We state a conjecture relating the genus-zero Gromov--Witten invariants of X to those of Y, which differs in general from the Crepant Resolution Conjectures of Ruan and…

Algebraic Geometry · Mathematics 2014-11-11 Tom Coates , Hiroshi Iritani , Hsian-Hua Tseng

This is the third in a sequence of papers in which we construct a quantum version of the Kirwan map from the equivariant quantum cohomology of a smooth polarized complex projective variety with the action of a connected complex reductive…

Algebraic Geometry · Mathematics 2017-05-19 Chris T. Woodward

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 this article, we introduce the notion of good map and use it to establish Gromov-Witten theory for orbifolds.

Algebraic Geometry · Mathematics 2007-05-23 Weimin Chen , Yongbin Ruan

We construct the Gromov-Witten invariants of moduli of stable morphisms to $\Pf$ with fields. This is the all genus mathematical theory of the Guffin-Sharpe-Witten model, and is a modified twisted Gromov-Witten invariants of $\Pf$. These…

Algebraic Geometry · Mathematics 2011-01-06 Huai-liang Chang , Jun Li

We consider a mirror symmetry of simple elliptic singularities. In particular, we construct isomorphisms of Frobenius manifolds among the one from the Gromov--Witten theory of a weighted projective line, the one from the theory of primitive…

Algebraic Geometry · Mathematics 2013-03-19 Ikuo Satake , Atsushi Takahashi

We give a construction of the moduli space of stable maps to the classifying stack B\mu_r of a cyclic group by a sequence of r-th root constructions on M_{0, n}. We prove a closed formula for the total Chern class of \mu_r-eigenspaces of…

Algebraic Geometry · Mathematics 2012-04-06 Arend Bayer , Charles Cadman

We found an interesting application of the K-theoretic Heisenberg algebras of Weiqiang Wang to the foundations of permutation equivariant K-theoretic Gromov--Witten theory. We also found an explicit formula for the genus 0 correlators in…

Algebraic Geometry · Mathematics 2024-03-25 Todor Milanov

We give a purely algebraic construction of a cohomological field theory associated with a quasihomogeneous isolated hypersurface singularity W and a subgroup G of the diagonal group of symmetries of W. This theory can be viewed as an…

Algebraic Geometry · Mathematics 2014-04-30 Alexander Polishchuk , Arkady Vaintrob

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

Given a smooth projective variety $X$ with a simple normal crossing divisor $D:=D_1+D_2+...+D_n$, where $D_i\subset X$ are smooth, irreducible and nef. We prove a mirror theorem for multi-root stacks $X_{D,\vec r}$ by constructing an…

Algebraic Geometry · Mathematics 2022-11-04 Hsian-Hua Tseng , Fenglong You

The construction of manifold structures and fundamental classes on the (compactified) moduli spaces appearing in Gromov-Witten theory is a long-standing problem. Up until recently, most successful approaches involved the imposition of…

Symplectic Geometry · Mathematics 2014-05-27 Andreas Gerstenberger