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Extensions of maps defined on many fibres
Barja Yáñez, Miguel Ángel; Naranjo del Val, Juan Carlos
Universitat de Barcelona
Let S be a fibred surface. We prove that the existence of morphisms from non countably many fibres to curves implies, up to base change, the existence of a rational map from S to another surface fibred over the same base reflecting the properties of the original morphisms. Under some conditions of unicity base change is not needed and one recovers exactly the initial maps.
2011-03-09
Geometria algebraica
Superfícies algebraiques
Algebraic geometry
Algebraic surfaces
(c) Barja et al., 1998
Article
Universitat de Barcelona
         

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