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Generically Finite Morphisms

Steven Dale Cutkosky
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Abstract

We consider the problem of birationally modifying a morphism of complete varieties to make it a morphism from a nonsingular variety to a normal variety. Our main result is to give a counterexample to this problem. This example also is a counterexample to the related conjecture of Abhyankar on ``weak simultaneous global resolution''. We also give some positive results. Forinstance, a positive result of this kind is possible if we remove the separatedness condition.

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Steven Dale Cutkosky. 2001-09-01. Generically Finite Morphisms. https://arxiv.org/abs/math/0109003

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