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On the logarithmic Kobayashi conjecture

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Veröffentlicht/Copyright: 14. November 2007
Journal für die reine und angewandte Mathematik
Aus der Zeitschrift Band 2007 Heft 611

We study the hyperbolicity of the log variety (ℙn,X), where X is a very general hypersurface of degree d ≧ 2n + 1 (which is the bound predicted by the Kobayashi conjecture). Using a positivity result for the sheaf of (twisted) logarithmic vector fields, which may be of independent interest, we show that any log-subvariety of (ℙn, X) is of log-general type, give a new proof of the algebraic hyperbolicity of (ℙn, X), and exclude the existence of maximal rank families of entire curves in the complement of the universal degree d hypersurface. Moreover, we prove that, as in the compact case, the algebraic hyperbolicity of a log-variety is a necessary condition for the metric one.

Received: 2006-03-30
Revised: 2006-09-26
Published Online: 2007-11-14
Published in Print: 2007-10-26

© Walter de Gruyter

Heruntergeladen am 25.3.2026 von https://www.degruyterbrill.com/document/doi/10.1515/CRELLE.2007.080/html
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