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Semistable divisorial contractions

By Paul Hacking

Abstract

The semistable minimal model program is a special case of the minimal model program concerning 3-folds fibred over a curve and birational morphisms preserving this structure. We classify semistable divisorial contractions which contract the exceptional divisor to a normal point of a fibre. Our results can be applied to describe compact moduli spaces of surfaces

Year: 2004
OAI identifier: oai:CiteSeerX.psu:10.1.1.192.3041
Provided by: CiteSeerX
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