arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1611.00569math.DGmath.AGmath.CV
收藏

Kähler流形的相对K-稳定性

Relative K-stability for Kähler manifolds

Ruadhaí Dervan

摘要:

研究Kähler流形上极值Kähler度量的存在性。在引入Kähler流形的相对K-稳定性概念后,证明了允许极值Kähler度量的Kähler流形是相对K-稳定的.一路上,我们证明了一个一般的$L^p$下界的卡拉比功能涉及测试配置和相关的数值不变量,回答唐纳森的问题。当Kähler流形是投射流形时,我们的相对K-稳定性定义比Székelyhidi给出的通常定义更强。特别是,我们的结果加强了已知的结果在投影的情况下(即使是常数数量曲率凯勒度量),并排除了一个众所周知的反例的“天真”版本的姚田唐纳森猜想在这种设置。

英文摘要:

We study the existence of extremal Kähler metrics on Kähler manifolds. After introducing a notion of relative K-stability for Kähler manifolds, we prove that Kähler manifolds admitting extremal Kähler metrics are relatively K-stable. Along the way, we prove a general $L^p$ lower bound on the Calabi functional involving test configurations and their associated numerical invariants, answering a question of Donaldson. When the Kähler manifold is projective, our definition of relative K-stability is stronger than the usual definition given by Székelyhidi. In particular our result strengthens the known results in the projective case (even for constant scalar curvature Kähler metrics), and rules out a well known counterexample to the "naïve" version of the Yau-Tian-Donaldson conjecture in this setting.

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。

↑