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Deformations of elliptic fibre bundles in positive characteristic

Holger Partsch

Number 5
Author Holger Partsch
Project C04
Year 2010

We study deformation theory of elliptic fibre bundles over curves in positive characteristics. As an application, we give examples of non-liftable elliptic surfaces in charactertic two and three, which answers a question of Katsura and Ueno. Also, we classify deformations of bielliptic surfaces.

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