On C-fibrations over projective curves

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The goal of this paper is to present a modified version (GML) of ML invariant which should take into account rulings over a projective base and allow further stratification of smooth affine rational surfaces. We provide a non-trivial example where GML invariant is computed for a smooth affine rational surface admitting no C-actions. We apply GML invariant to computation of ML invariant of some threefolds.
21 pages, LaTex

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Algebraic Geometry, 14ER05, 14R25

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http://salesiana.dossiersoluciones.com/handle/123456789/140219

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0710.3312
 http://arxiv.org/abs/0710.3312

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arXiv