Categorical representability and intermediate Jacobians of Fano threefolds
Marcello Bernardara
Université Paul Sabatier, Toulouse, FranceMichele Bolognesi
Université de Montpellier, France
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Abstract
We define, basing upon semiorthogonal decompositions of , categorical representability of a projective variety and describe its relation with classical representabilities of the Chow ring. For complex threefolds satisfying both classical and categorical representability assumptions, we reconstruct the intermediate Jacobian from the semiorthogonal decomposition. We discuss finally how categorical representability can give useful information on the birational properties of by providing examples and stating open questions.