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Transactions of the American Mathematical Society
Transactions of the American Mathematical Society
ISSN 1088-6850(online) ISSN 0002-9947(print)


Faisceaux amples sur les espaces analytiques

Author: Vincenzo Ancona
Journal: Trans. Amer. Math. Soc. 274 (1982), 89-100
MSC: Primary 32L10; Secondary 32C35, 32J20
MathSciNet review: 670921
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Abstract: The following result is established. Let $ f:X \to Y$ be a morphism between two compact complex spaces and $ \mathfrak{L}$ a weakly positive invertible sheaf on $ X$; then for suitable $ nf{}_ \ast {\mathfrak{L}^n}$ is weakly positive on $ Y$.

It follows that Moišezon spaces can be characterized via weakly positive coherent sheaves. Moreover, a problem posed by Grauert on the exceptional subspaces of complex spaces can be solved.

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Additional Information

PII: S 0002-9947(1982)0670921-7
Keywords: Faisceau cohérent faiblement positif, ample, cohomologiquement ample, espace de Moišezon, sous-espace exceptionnel, fibré normal, contraction
Article copyright: © Copyright 1982 American Mathematical Society

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