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Characterization of pseudo-effective vector bundles by singular Hermitian metrics

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arxiv 1804.02146 v4 pith:HPA6PBW2 submitted 2018-04-06 math.AG math.CV

classification math.AGmath.CV
keywords bundleshermitianmetricssingularvectorcharacterizationgeometricgive
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In this paper, we give complex geometric descriptions of the notions of algebraic geometric positivity of vector bundles and torsion-free coherent sheaves, such as nef, big, pseudo-effective and weakly positive, by using singular Hermitian metrics. As an applications, we obtain a generalization of Mori's result. We also give a characterization of the augmented base locus by using singular Hermitian metrics on vector bundles and the Lelong numbers.

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  1. On projective manifolds with pseudo-effective tangent bundle

    math.AG 2019-08 conditional novelty 7.0 of 10

    Projective manifolds with pseudo-effective tangent bundle admit a smooth fibration to a flat projective manifold with rationally connected general fiber, and all minimal such surfaces are classified.

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