Uniqueness of K-polystable degenerations of Fano varieties
Uniqueness of K-polystable degenerations of Fano varieties
复制标题
DOI:
10.4007/annals.2019.190.2.4
复制
发表时间:
2018-12
影响因子:
4.9
通讯作者:
Harold Blum;Chenyang Xu-
中科院分区:
文献类型:
--
作者:
Harold Blum;Chenyang Xu-
We prove that K-polystable degenerations of Q-Fano varieties are unique. Furthermore, we show that the moduli stack of K-stable Q-Fano varieties is separated. Together with [Jia17,BL18], the latter result yields a separated Deligne-Mumford stack parametrizing all uniformly K-stable Q-Fano varieties of fixed dimension and volume. The result also implies that the automorphism group of a K-stable Q-Fano variety is finite.