Bogomolov–Sommese vanishing on log canonical pairs
Let ( ) be a projective log canonical pair. We show that for any natural number , the sheaf of reflexive logarithmic -forms does not contain a Weil divisorial subsheaf whose Kodaira–Iitaka dimension exceeds . This generalizes a classical theorem of Bogomolov and Sommese. In fact, we prove a more gen...
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Veröffentlicht in: | Journal für die reine und angewandte Mathematik 2015-05, Vol.2015 (702), p.109-142 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Let (
) be a projective log canonical pair. We show that for any natural number
, the sheaf
of reflexive logarithmic
-forms does not contain a Weil divisorial subsheaf whose Kodaira–Iitaka dimension exceeds
. This generalizes a classical theorem of Bogomolov and Sommese.
In fact, we prove a more general version of this result which also deals with the
introduced by Campana. The main ingredients to the proof are the Extension Theorem of Greb–Kebekus–Kovács–Peternell, a new version of the Negativity Lemma, the minimal model program, and a residue map for symmetric differentials on dlt pairs.
We also give an example showing that the statement cannot be generalized to spaces with Du Bois singularities.
As an application, we give a Kodaira–Akizuki–Nakano-type vanishing result for log canonical pairs which holds for reflexive as well as for Kähler differentials. |
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ISSN: | 0075-4102 1435-5345 |
DOI: | 10.1515/crelle-2013-0031 |