Smoothness and jet schemes

Details Smoothness and jet schemes Smoothness and jet schemes

2008-10-25

arxiv.org/abs/0810.4571v1

Mathematics

Algebraic Geometry

12 pages, to appear in Advanced Studies in Pure Math

Scientific paper

This paper shows some criteria for a scheme of finite type over an algebraically closed field to be non-singular in terms of jet schemes. For the base field of characteristic zero, the scheme is non-singular if and only if one of the truncation morphisms of its jet schemes is flat. For the positive characteristic case, we obtain a similar characterization under the reducedness condition on the scheme. We also obtain by a simple discussion that the scheme is non-singular if and only if one of its jet schemes is non-singular.

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