Openness of K-semistability for Fano varieties

Openness of K-semistability for Fano varieties
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DOI:
10.1215/00127094-2022-0054
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发表时间:
2019-07
影响因子:
2.5
通讯作者:
Harold Blum;Yuchen Liu;Chenyang Xu-
Harold Blum;Yuchen Liu;Chenyang Xu-
中科院分区:
数学1区
文献类型:
--
作者:
Harold Blum;Yuchen Liu;Chenyang Xu-

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本文证明了对数Fano对族的K-半稳定性的开放性,证明了稳定性阈值是纤维上的一个可构造函数。我们还证明了任何特殊的测试配置产生于一个有界补的对数规范的地方,并建立任何稳定阈值的极小化的性质。
In this paper, we prove the openness of K-semistability in families of log Fano pairs by showing that the stability threshold is a constructible function on the fibers. We also prove that any special test configuration arises from a log canonical place of a bounded complement and establish properties of any minimizer of the stability threshold.