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The Fourier decomposition on the Chow ring of certain hyperkaehler fourfolds

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Charles Vial (Cambridge) - Seminar Algebraische Geometrie (SAG)

What
  • Seminar
When Jun 06, 2013
from 10:30 am to 11:30 am
Where Bonn, Seminarraum MPI, Vivatsgasse 7
Contact Name sachinid
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Using a codimension-1 algebraic cycle obtained from the Poincare line bundle, Beauville defined the Fourier transform on the Chow ring of an abelian variety A and showed that the Fourier transform induces a decomposition of the Chow ring CH_*(A) which is compatible with its ring structure. We prove that a similar decomposition exists for certain hyperkaehler fourfolds by using a codimension-2 algebraic cycle representing the Beauville--Bogomolov bilinear form. This is joint work with Mingmin Shen.