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Títol:	Extensions of maps defined on many fibres
Autor/a:	Barja Yáñez, Miguel Ángel; Naranjo del Val, Juan Carlos
Altres autors:	Universitat de Barcelona
Abstract:	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.
Matèries:	-Geometria algebraica -Superfícies algebraiques -Algebraic geometry -Algebraic surfaces
Drets:	(c) Universitat de Barcelona, 1998
Tipus de document:	Article Article - Versió publicada
Publicat per:	Universitat de Barcelona
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