We consider Fano manifolds $M$ that admit a collection of finite automorphism groups $G_1, \ldots, G_k$ , such that the quotients $M/G_i$ are smooth Fano manifolds possessing a Kähler-Einstein metric. Under some numerical and smoothness assumptions on the ramification divisors, we prove that $M$ admits a Kähler-Einstein metric too.
Si considerano varietà di Fano $M$ che ammettono un certo numero di rivestimenti di Galois $M\rightarrow M_i$, su delle varietà di Fano lisce $M_i$ che ammettono una metrica di Kähler-Einstein. Sotto alcune ipotesi numeriche sui divisori di ramificazione si dimostra che allora anche su $M$ esiste una metrica di Kähler-Einstein.
@article{BUMI_2005_8_8B_3_605_0, author = {Claudio Arezzo and Alessandro Ghigi}, title = {Symmetries and K\"ahler-Einstein metrics}, journal = {Bollettino dell'Unione Matematica Italiana}, volume = {8-A}, year = {2005}, pages = {605-613}, zbl = {1178.53040}, mrnumber = {2182418}, language = {en}, url = {http://dml.mathdoc.fr/item/BUMI_2005_8_8B_3_605_0} }
Arezzo, Claudio; Ghigi, Alessandro. Symmetries and Kähler-Einstein metrics. Bollettino dell'Unione Matematica Italiana, Tome 8-A (2005) pp. 605-613. http://gdmltest.u-ga.fr/item/BUMI_2005_8_8B_3_605_0/
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