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Open AccessJournal ArticleDOI

Virtual moduli cycles and Gromov-Witten invariants of algebraic varieties

TLDR
In this article, the authors introduce a method of constructing the virtual cycle of any scheme associated with a tangent-obstruction complex and apply this method to construct the virtual moduli cycle of the moduli of stable maps from n-pointed genus g curves to any smooth projective variety.
Abstract
We introduce a method of constructing the virtual cycle of any scheme associated with a tangent-obstruction complex. We apply this method to constructing the virtual moduli cycle of the moduli of stable maps from n-pointed genus g curves to any smooth projective variety. As an application, we give an algebraic definition of GW-invariants for any smooth projective variety.

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Citations
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Journal ArticleDOI

Localization of virtual classes

TL;DR: In this paper, the authors prove a localization formula for virtual fundamental classes in the context of torus equivariant perfect obstruction theories, where the higher genus Gromov-Witten invariants of projective space are expressed as graph sums of tautological integrals over moduli spaces of stable pointed curves.
Journal ArticleDOI

Gromov-Witten theory and Donaldson-Thomas theory, I

TL;DR: In this paper, the Gromov-Witten/Donaldson-Thomas correspondence for 3-folds in both the absolute and relative cases was discussed. And degree 0 formulas were proved for both the relative and absolute versions of the theory for toric varieties.
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Hodge integrals and Gromov-Witten theory

TL;DR: In this article, a universal system of differential equations is proposed to determine the generating function of the Chern classes of the Hodge bundle in Gromov-Witten theory for any target X. The genus g, degree d multiple cover contribution of a rational curve is found to be simply proportional to the Euler characteristic of M_g.
Journal ArticleDOI

Gromov-Witten theory of Deligne-Mumford stacks

TL;DR: In this article, Gromov-Witten invariants of a smooth complex Deligne-Mumford stack with a projective coarse moduli space were introduced and proved.
References
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Book

Principles of Algebraic Geometry

TL;DR: In this paper, a comprehensive, self-contained treatment of complex manifold theory is presented, focusing on results applicable to projective varieties, and including discussion of the theory of Riemann surfaces and algebraic curves, algebraic surfaces and the quadric line complex.
Book

Commutative Ring Theory

TL;DR: In this article, the authors introduce the notion of complete local rings and apply it to a wide range of applications, including: I-smoothness, I-flatness revisited, and valuation rings.
Journal ArticleDOI

The irreducibility of the space of curves of given genus

TL;DR: In this article, the authors implique l'accord avec les conditions generales d'utilisation (http://www.numdam.org/legal.php).
Journal ArticleDOI

Intersection theory on the moduli space of curves and the matrix Airy function

TL;DR: In this article, it was shown that two natural approaches to quantum gravity coincide, relying on the equivalence of each approach to KdV equations, and they also investigated related mathematical problems.
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