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Alpha Invariants and K-Stability for General Polarizations of Fano Varieties

dc.creatorDervan, Ruadhai
dc.date.accessioned2014-09-01
dc.date.accessioned2018-11-24T23:26:51Z
dc.date.available2016-09-09T14:28:34Z
dc.date.available2018-11-24T23:26:51Z
dc.date.issued2014-09-26
dc.identifierhttps://www.repository.cam.ac.uk/handle/1810/260098
dc.identifier.urihttp://repository.aust.edu.ng/xmlui/handle/123456789/3901
dc.description.abstractWe provide a sufficient condition for polarisations of Fano varieties to be K-stable in terms of Tian’s alpha invariant, which uses the log canonical threshold to measure singularities of divisors in the linear system associated to the polarisation. This generalises a result of Odaka-Sano in the anti-canonically polarised case, which is the algebraic counterpart of Tian’s analytic criterion implying the existence of a K¨ahler-Einstein metric. As an application, we give new K-stable polarisations of a general degree one del Pezzo surface. We also prove a corresponding result for log K-stability.
dc.languageen
dc.publisherOxford University Press
dc.publisherINTERNATIONAL MATHEMATICS RESEARCH NOTICES
dc.titleAlpha Invariants and K-Stability for General Polarizations of Fano Varieties
dc.typeArticle


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