A note on threefolds with a hyperplane section of general type |
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Authors: | M A De Cataldo M Palleschi |
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Institution: | (1) Department of Mathematics, Washington University in St. Louis, Campus Box 1146, 63130-4899 St. Louis, MO, U.S.A.;(2) Dipartimento di Matematica F. Enriques, Via Saldini, 50, Milano, Italy |
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Abstract: | This paper deals with polarized pairs
, where
is a nonsingular projective threefold and
is a very ample line bundle on it, such that for one smooth member  |
|, one has (Â)=2. A large class of pairs whose adjoint line bundle is nef and big was indirectedly studied by Beltrametti and co-workers. We add some more information, both in this general case and also when the adjoint line bundle fails to be nef and big. |
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Keywords: | 14C20 14J30 |
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