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arXiv:math/9911119 [math.AG]AbstractReferencesReviewsResources

On contractible curves on normal surfaces

Stefan Schroeer

Published 1999-11-16Version 1

We characterize contractible curves on proper normal algebraic surfaces in terms of complementary Weil divisors. Using this we generalize the classical criteria of Castelnuovo and Artin. As application we derive a finiteness result on homogeneous spectra defined by Weil divisors on surfaces.

Comments: 20 pages, submitted to J. Reine Angew. Math
Journal: J. reine angew. Math. 524, 1-15 (2000)
Categories: math.AG
Subjects: 14C20, 14E10, 14J05, 14J17
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