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arXiv 1901.09754math.DG
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耦合Kähler-Einstein度规的Ricci迭代

Ricci iteration for coupled Kähler-Einstein metrics

Ryosuke Takahashi

摘要:

本文介绍了一个与Ricci算子和扭曲Kähler-Einstein度规有关的动力系统--耦合Ricci迭代,作为研究耦合Kähler-Einstein度规的一种方法.对于负的第一Chern类,我们证明了迭代的光滑收敛性。对于正的第一陈类,我们还提供了Ding泛函的强制性概念,并证明了它与CKE度量的存在性的等价性。作为应用,在自同构群离散的条件下,证明了CKE Fano流形上迭代的光滑收敛性。

英文摘要:

In this paper, we introduce the "coupled Ricci iteration", a dynamical system related to the Ricci operator and twisted Kähler-Einstein metrics as an approach to the study of coupled Kähler-Einstein (CKE) metrics. For negative first Chern class, we prove the smooth convergence of the iteration. For positive first Chern class, we also provide a notion of coercivity of the Ding functional, and show its equivalence to existence of CKE metrics. As an application, we prove the smooth convergence of the iteration on CKE Fano manifolds assuming that the automorphism group is discrete.

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