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- W4313895424 abstract "In the paper cite{Lau16}, it was shown that the restriction of a pseudoeffective divisor $D$ to a subvariety $Y$ with nef normal bundle is pseudoeffective. Assuming the normal bundle is ample and that $D|_Y$ is not big, we prove that the numerical dimension of $D$ is bounded above by that of its restriction, i.e. $kappa_{sigma}(D)leq kappa_{sigma}(D|_Y)$. The main motivation is to study the cycle classes of positive curves: we show that the cycle class of a curve with ample normal bundle lies in the interior of the cone of curves, and the cycle class of an ample curve lies in the interior of the cone of movable curves. We do not impose any condition on the singularities on the curve or the ambient variety. For locally complete intersection curves in a smooth projective variety, this is the main result of Ottem cite{Ott16}. The main tool in this paper is the theory of $q$-ample divisors." @default.
- W4313895424 created "2023-01-10" @default.
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- W4313895424 date "2017-03-23" @default.
- W4313895424 modified "2023-10-14" @default.
- W4313895424 title "Numerical dimension and locally ample curves" @default.
- W4313895424 doi "https://doi.org/10.48550/arxiv.1703.08265" @default.
- W4313895424 hasPublicationYear "2017" @default.
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