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Iskovskikh Seminar
September 12, 2019 12:00, Moscow, Steklov Mathematical Institute, room 540
 


Delta-invariants for Fano varieties with reductive group actions

A. Golota

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Abstract: In 1987 Tian defined the alpha-invariant for a Fano variety with a reductive group action. He gave a sufficient condition for a Fano variety to admit a Kaehler-Einstein metric in terms of this invariant. Recently Fujita and Odaka suggested the so-called delta-invariant, which characterizes the existence of a KE metric on a Fano variety with finite automorphism group. In my talk I will explain how to define a version of the delta-invariant for a Fano variety with an action of a (possibly infinite) reductive group.

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