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The Noether–Lefschetz Theorem Via Vanishing of Coherent Cohomology
Published online by Cambridge University Press: 20 November 2018
Abstract
We prove that for a generic hypersurface in
${{\mathbb{P}}^{2n+1}}$
of degree at least
$2\,+\,2/n$, the
$n$-th Picard number is one. The proof is algebraic in nature and follows from certain coherent cohomology vanishing.
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- Copyright © Canadian Mathematical Society 2008
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