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arXiv 2201.03666math.DGmath.AGmath.CV
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关于曲率消失的 Hermitian 流形

On Hermitian manifolds with vanishing curvature

Kyle Broder, Kai Tang

AI总结:

本文研究紧复流形上曲率消失的 Hermitian 度量,证明其在伪有效典范丛或 Fujiki 类 C 等条件下具有共形平衡或 Kähler 结构,并完成相关分类。

摘要:

我们证明,在具有伪有效典范丛的紧复流形上,全纯曲率消失的 Hermitian 度量是共形平衡的。在紧 Kähler 流形上,全纯曲率消失的 pluriclosed 度量被证明是 Kähler 的,因而得到完全分类。我们证明,在 Fujiki 类 C 中的复流形上,实双截曲率消失的 Hermitian 度量是 Kähler 的,因此属于同一分类。最后,我们形式化了“改变的”曲率概念;当要求这些曲率与其“标准”对应物一致时,它们会迫使度量具有特殊结构。

英文摘要:

We show that Hermitian metrics with vanishing holomorphic curvature on compact complex manifolds with pseudoeffective canonical bundle are conformally balanced. Pluriclosed metrics with vanishing holomorphic curvature on compact Kähler manifolds are shown to be Kähler and hence, are completely classified. We prove that Hermitian metrics with vanishing real bisectional curvature on complex manifolds in the Fujiki class C are Kähler and thus fall under the same classification. Finally, we formalize the notion of `altered' curvatures, which force distinguished metric structures when mandated to coincide with their `standard' counterparts.

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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