A view on contractions of higher dimensional varieties
arXiv:alg-geom/9611017
Abstract
In this paper we discuss some recent results about extremal contractions of complex algebraic varieties. These are proper surjective maps, , of normal varieties with connected fibers such that has mild singularities (in particular is -Gorenstein) and the anticanonical divisor of is ample. It will appear on the Proceedings of AMS-SRI on Algebraic Geometry, Santa Cruz 1995.
AMS-TeX (pspum), 31 pages