Effective Non-vanishing for Algebraic Surfaces in Positive Characteristic

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We give a theorem on the effective non-vanishing problem for algebraic surfaces in positive characteristic. For the Kawamata-Viehweg vanishing, the logarithmic Kollar vanishing and the logarithmic semipositivity, we give their counterexamples on ruled surfaces in positive characteristic.
17 pages

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Algebraic Geometry, 14J26; 14E30

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http://salesiana.dossiersoluciones.com/handle/123456789/102228

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0509086
 http://arxiv.org/abs/math/0509086

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arXiv