On the dimension of the adjoint linear system for threefolds
M. C. Beltrametti, A. J. Sommese (1995)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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M. C. Beltrametti, A. J. Sommese (1995)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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Thomas Peternell, Fernando Serrano (1998)
Collectanea Mathematica
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In this paper we study the global structure of projective threefolds X whose anticanonical bundle -KX is nef.
Priska Jahnke, Thomas Peternell, Ivo Radloff (2011)
Open Mathematics
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In a follow-up to our paper [Threefolds with big and nef anticanonical bundles I, Math. Ann., 2005, 333(3), 569–631], we classify smooth complex projective threefolds Xwith −K X big and nef but not ample, Picard number γ(X) = 2, and whose anticanonical map is small. We assume also that the Mori contraction of X and of its flop X + are not both birational.
Aldo Biancofiore, Maria Lucia Fania (2001)
Revista Matemática Complutense
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The structure of 3-folds in P which are generally linked via a complete intersection (f,f,f) to 3-folds in P of degree d ≤ 5 is determined. We also give three new examples of smooth 3-folds in P of degree 11 and genus 9. These examples are obtained via liaison. The first two are 3-folds linked via a complete intersection (2,3,3) to 3-folds in P of degree 7: (i) the hyperquadric fibration over P and (ii) the scroll over P. The third example is Pfaffian linked to a 3-dimensional quadric...
Hironobu Maeda (1986)
Compositio Mathematica
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Antonio Lanteri, Hidetoshi Maeda (2003)
Collectanea Mathematica
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Tommaso De Fernex (1998)
Collectanea Mathematica
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