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The Kaehler cone of a compact hyperkaehler manifold

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arxiv math/9909109 v2 pith:X3DPOM3C submitted 1999-09-19 math.AG

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keywords hyperkaehlercompactbirationalcohomologyconekaehlermanifoldmanifolds
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This is an attempt towards the understanding of the (birational) Kaehler cone of a compact hyperkaehler manifold in terms of the Beauville-Bogomolov form on its second cohomology. We discuss birational correspondences between hyperkaehler manifolds and their effects on the cohomology. Many of the results are conjectural in as much as they depend on a projectivity criterion for compact hyperkaehler manifolds contained in this paper's predecessor, but in which a serious mistake has oocured. An erratum is given in Sect. 6 and a way to rescue the approach is proposed in Sect. 7.

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Cited by 1 Pith paper

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  1. Mapping class group and global Torelli theorem for hyperkahler manifolds: an erratum

    math.AG 2019-08 conditional novelty 6.0 of 10

    Corrected proofs for the global Torelli theorem for hyperkähler manifolds are supplied by switching from the Teichmüller space to the marked moduli space and by adding an ergodic lemma on lattice isometry groups.

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