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arXiv 0707.3572math.SG
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Kuranishi同调与Kuranishi上同调

Kuranishi homology and Kuranishi cohomology

Dominic Joyce

摘要:

Kuranishi空间是一个具有Kuranishi结构的拓扑空间,它是由小野和谷定义的。在辛几何中J-全纯曲线的模空间上自然出现Kuranishi结构。设Y是orbifold,R是交换环或Q-代数.定义了两种Kuranishi同调KH_*(Y;R).定义KH_*(Y;R)的链复形KC_*(Y;R)由[X,f,G]在R上生成,其中X是紧的带角的定向Kuranishi空间,f:X --> Y是光滑的,G是使Aut(X,f,G)有限的规范固定数据.我们的主要结果是,这些是同构的奇异同调。我们定义Poincare对偶Kuranishi上同调,同构于紧支撑上同调。本文定义了五种由同构类[X,f]所张成的Kuranishi(余)有边性,其中X是无边界的紧定向Kuranishi空间,f:X --> Y是光滑的.它们是新的拓扑不变量,我们证明了它们是非常大的。这些理论是辛几何中强有力的新工具。定义J-全纯曲线的模空间的虚圈和虚链在Kuranishi(上)同调中是很简单的。不需要扰动模空间,也不存在横截性问题。这给出了拉格朗日弗洛尔上同调的主要简化。本文在Kuranishi边界主义中定义了新的Gromov-Witten型不变量。我们勾勒出这些可能被用来证明Gopakumar-Vafa不变量的完整性猜想。本文在arXiv:0710.5634中进行了调查。

英文摘要:

A Kuranishi space is a topological space with a Kuranishi structure, defined by Fukaya and Ono. Kuranishi structures occur naturally on moduli spaces of J-holomorphic curves in symplectic geometry. Let Y be an orbifold and R a commutative ring or Q-algebra. We define two kinds of Kuranishi homology KH_*(Y;R). The chain complex KC_*(Y;R) defining KH_*(Y;R) is spanned over R by [X,f,G], for X a compact oriented Kuranishi space with corners, f : X --> Y smooth, and G "gauge-fixing data" which makes Aut(X,f,G) finite. Our main result is that these are isomorphic to singular homology. We define Poincare dual Kuranishi cohomology, isomorphic to compactly-supported cohomology. We define five kinds of Kuranishi (co)bordism spanned by isomorphism classes[X,f] for X a compact oriented Kuranishi space without boundary and f : X --> Y smooth. They are new topological invariants, and we show they are very large. These theories are powerful new tools in symplectic geometry. Defining virtual cycles and chains for moduli spaces of J-holomorphic curves is trivial in Kuranishi (co)homology. There is no need to perturb moduli spaces, and no problems with transversality. This gives major simplifications in Lagrangian Floer cohomology. We define new Gromov-Witten type invariants in Kuranishi bordism, over Z not Q. We sketch how these may be used to prove the integrality conjecture for Gopakumar-Vafa invariants. This paper is surveyed in arXiv:0710.5634.

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