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Aspects of the Geometry of Varieties with Canonical Singularities

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Foliation Theory in Algebraic Geometry

Part of the book series: Simons Symposia ((SISY))

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Abstract

This survey reports on recent developments regarding the global structure of complex varieties which occur in the minimal model program.

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Notes

  1. 1.

    Vanishing of a local intersection cohomology group.

  2. 2.

    Observe that the sheaf \(\mathcal{T}_{X}\) need not be locally free. We refer the reader to [Anc82, Section 2] for the definition of ampleness for arbitrary coherent sheaves.

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Acknowledgements

Both authors found the conference on “Foliation theory” exceptionally fruitful. They would like to thank the organisers for the invitation, and the Simons Foundation for financing this event. They also thank Behrouz Taji, who pointed them to a mistake in the first version of this paper.

This overview article summarises the content of the research articles [GKKP11, GKP11, GKP13a, GKP13b] as well as some recent developments by Graf, Jörder and others, and aims to put them into perspective. The results presented here are therefore not new. The exposition frequently follows the original articles. Proper references will be given throughout.

Both authors were supported in part by the DFG-Forschergruppe 790 “Classification of Algebraic Surfaces and Compact Complex Manifolds”. Stefan Kebekus also acknowledges support through a joint fellowship of the Freiburg Institute of Advanced Studies (FRIAS) and the University of Strasbourg Institute for Advanced Study (USIAS). Thomas Peternell thanks FRIAS for providing excellent working conditions.

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Kebekus, S., Peternell, T. (2016). Aspects of the Geometry of Varieties with Canonical Singularities. In: Cascini, P., McKernan, J., Pereira, J.V. (eds) Foliation Theory in Algebraic Geometry. Simons Symposia. Springer, Cham. https://doi.org/10.1007/978-3-319-24460-0_4

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