Semistable Fibrations on Rational Surfaces with at least 6 Singular Fibers
Claudia R. Alcantara, Abel Castorena, Alexis G. Zamora
Abstract
This paper has been withdrawn. A completely rewritten new version will be soon submitted. In order to obtain the inequality 6(g-1) Kf2 some additional conditions must be imposed on the fibration, involving the number on certain exceptional curves.
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