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EINSTEIN METRICS AND GIT STABILITY

机译:爱因斯坦度量标准和Git稳定性

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In this expository article we review the problem of finding Einstein metrics on compact Kahler manifolds and Sasaki manifolds. In the former half of this article we see that, in the Kahler case, the problem fits better with the notion of stability in Geometric Invariant Theory if we extend the problem to that of finding extremal Kahler metrics or constant scalar curvature Kahler (cscK) metrics. In the latter half of this paper, we see that most of the ideas in Kahler geometry extend to Sasaki geometry as transverse Kahler geometry. We also summarize recent results about the existence of toric Sasaki-Einstein metrics.
机译:在这篇说明性文章中,我们回顾了在紧凑的Kahler流形和Sasaki流形上找到爱因斯坦度量的问题。在本文的前半部分中,我们看到,在Kahler案例中,如果将问题扩展到寻找极值Kahler度量或恒定标量曲率Kahler(cscK)度量的问题,则该问题更适合几何不变理论中的稳定性概念。 。在本文的后半部分,我们看到,Kahler几何中的大多数思想都扩展为Sasaki几何,即横向Kahler几何。我们还总结了有关复曲面Sasaki-Einstein指标存在的最新结果。

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