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Nef dimension of minimal models

Florin Ambro
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Abstract

We reduce the Abundance Conjecture in dimension 4 to the following numerical statement: if the canonical divisor K is nef and has maximal nef dimension, then K is big. From this point of view, we ``classify'' in dimension 2 nef divisors which have maximal nef dimension, but which are not big.

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Florin Ambro. 2003-01-26. Nef dimension of minimal models. https://arxiv.org/abs/math/0301305

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