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arXiv math/0004009math.DGmath.AGmath.GTmath.SG
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关于调和形式的乘积

On products of harmonic forms

D. Kotschick

摘要:

我们证明了流形承认黎曼度量的产品的调和形式是调和满足强拓扑限制,其中一些是类似于性质的平坦流形。其他的则更微妙,与辛几何和塞伯格-威滕理论有关。我们还证明了一个流形允许一个具有调和形式的度量,其乘积不是调和的当且仅当它不是一个有理同调球面。

英文摘要:

We prove that manifolds admitting a Riemannian metric for which products of harmonic forms are harmonic satisfy strong topological restrictions, some of which are akin to properties of flat manifolds. Others are more subtle, and are related to symplectic geometry and Seiberg-Witten theory. We also prove that a manifold admits a metric with harmonic forms whose product is not harmonic if and only if it is not a rational homology sphere.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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