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Hyperbolicity related problems for complete intersection varieties

Published online by Cambridge University Press:  18 November 2013

Damian Brotbek*
Affiliation:
Institut de Recherche Mathématique Avancée, Université de Strasbourg, 67084 Strasbourg, France email brotbek@math.unistra.fr

Abstract

In this paper we examine different problems regarding complete intersection varieties of high multidegree in a smooth complex projective variety. First we prove an existence theorem for jet differential equations that generalizes a theorem of Diverio. Then we show how one can deduce hyperbolicity for generic complete intersections of high multidegree and high codimension from the known results on hypersurfaces. Finally, motivated by a conjecture of Debarre, we focus on the positivity of the cotangent bundle of complete intersections, and prove some results towards this conjecture; among other things, we prove that a generic complete intersection surface of high multidegree in a projective space of dimension at least four has an ample cotangent bundle.

Type
Research Article
Copyright
© The Author(s) 2013 

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