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arXiv 2510.03044math.DGmath.AGmath.CV
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紧Kähler流形退化的两个Calabi-Yau定理

Two Calabi-Yau theorems for degenerations of compact Kähler manifolds

David Witt Nyström

AI总结:

本文研究紧Kähler流形退化的两个Calabi-Yau定理,分别为大检验构型的推广定理与非阿基米德Kähler几何框架下的更广退化类定理,重点探讨二者与大上同调类及其体积理论的关联。

摘要:

我们讨论紧Kähler流形退化的两个密切相关的Calabi-Yau定理。第一个是大检验构型(big test configurations)的Calabi-Yau定理,推广了[WN24]中的结果,它源自与Mesquita-Piccione近期的合作工作[MW25],但本文给出了更直接的证明。第二个结果是针对更广泛退化类的Calabi-Yau定理,用非阿基米德Kähler几何(non-Archimedean Kähler geometry)的语言表述,其代数情形由Boucksom-Jonsson[BJ22]在Boucksom-Favre-Jonsson[BFJ15]早期工作的基础上首次证明,而一般Kähler情形则在[MW25]中确立。本文的核心关注点是这些结果与大上同调类及其体积理论之间的联系。

英文摘要:

We discuss two closely related Calabi-Yau theorems for degenerations of compact Kähler manifolds. The first is a Calabi-Yau theorem for big test configurations, that generalizes a result in [WN24]. It follows from recent joint work with Mesquita-Piccione [MW25], but is here given a more direct proof. The second result is a Calabi-Yau theorem for a wider class of degenerations, formulated in the language of non-Archimedean Kähler geometry. It was first proved in the algebraic setting by Boucksom-Jonsson [BJ22], building on earlier work of Boucksom-Favre-Jonsson [BFJ15], while the general Kähler case was established in [MW25]. Our main focus here is on the connection between these results and the theory of big cohomology classes and their volumes.

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