Threefolds with big and nef anticanonical bundles I

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We start the classification of smooth projective threefolds X whose anticanonical bundles -K_X are big and nef but not ample. In this paper we treat the case b_2(X) = 2 and the morphism associated with the base point free linear system |-mK_X|, m>>0, is divisorial.
51 pages, LaTeX2e; final version, to appear in Math. Ann

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Algebraic Geometry, 14J45, 14J30, 14E05

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http://salesiana.dossiersoluciones.com/handle/123456789/95667

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0407484
 http://arxiv.org/abs/math/0407484
 Math. Ann. 333, No.3 (2005), 569-631

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arXiv