K-STABILITY OF FANO MANIFOLDS WITH NOT SMALL ALPHA INVARIANTS

K-STABILITY OF FANO MANIFOLDS WITH NOT SMALL ALPHA INVARIANTS
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DOI:
10.1017/s1474748017000111
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发表时间:
2016-06
影响因子:
0.9
通讯作者:
Kento Fujita
Kento Fujita
中科院分区:
数学1区
文献类型:
--
作者:
Kento Fujita

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证明了任意n维Fano流形X$满足$\unicode[STIX]{x1 D 6 FC}(X)=n/(n+1)$且$n\geqslant 2$是K-稳定的,其中$\unicode[STIX]{x1 D 6 FC}(X)$是由Tian引入的$X$的α不变量.特别地,任何这样的$X$允许凯勒-爱因斯坦度量,并且$X$的全纯自同构群$\operatorname{Aut}(X)$是有限的。
We show that any $n$ -dimensional Fano manifold $X$ with $\unicode[STIX]{x1D6FC}(X)=n/(n+1)$ and $n\geqslant 2$ is K-stable, where $\unicode[STIX]{x1D6FC}(X)$ is the alpha invariant of $X$ introduced by Tian. In particular, any such $X$ admits Kähler–Einstein metrics and the holomorphic automorphism group $\operatorname{Aut}(X)$ of $X$ is finite.