Ample vector bundles with sections vanishing along conic fibrations over curves.
Tommaso De Fernex (1998)
Collectanea Mathematica
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Displaying similar documents to “Geometric genera for ample vector bundles with regular sections.”
Ample vector bundles with sections vanishing along conic fibrations over curves.
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On the boundedness of the set of ample vector bundles with fixed sectional genus
E. Ballico (1993)
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Mauro C. Beltrametti, Sandra Di Rocco, Andrew J. Sommese (1999)
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We introduce and study the k-jet ampleness and the k-jet spannedness for a vector bundle, E, on a projective manifold. We obtain different characterizations of projective space in terms of such positivity properties for E. We compare the 1-jet ampleness with different notions of very ampleness in the literature.
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Michał Szurek, Jarosław A. Wisniewski (1990)
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Examples of non-ample normal bundles
Norman Goldstein (1984)
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On the structure of linked 3-folds.
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...
On the second exterior power of tangent bundles of threefolds
Frédéric Campana, Thomas Peternell (1992)
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Remarks on Seshadri constants of vector bundles
Christopher Hacon (2000)
Annales de l'institut Fourier
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We give a lower bound for the Seshadri constants of ample vector bundles which depends only on the numerical properties of the Chern classes and on a “stability” condition.