Neron-Severi groups under specialization

Andre used Hodge-theoretic methods to show that in a smooth proper family X → B of varieties over an algebraically closed field k of characteristic zero, there exists a closed fiber having the same Picard number as the geometric generic fiber, even if k is countable. We give a completely different a...

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Bibliographic Details
Main Authors: Maulik, Davesh (Author), Poonen, Bjorn (Contributor)
Other Authors: Massachusetts Institute of Technology. Department of Mathematics (Contributor)
Format: Article
Language:English
Published: Duke University Press, 2013-09-13T12:41:58Z.
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