Tame coverings of arithmetic schemes
Tame coverings of arithmetic schemes
复制标题
驯服算术方案的覆盖
DOI:
10.1007/s002080100262
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发表时间:
2000
影响因子:
1.4
通讯作者:
A. Schmidt
中科院分区:
文献类型:
--
作者:
A. Schmidt
We extend the notion of a tame covering of a pair (X,D) where X is a regular scheme and D is a normal crossing divisor (cf. SGA1), to pairs (X,Y) where X is an arbitrary scheme and Y is a closed subset in X. We show that the abelianized tame fundamental group of a regular scheme which is flat and of finite type over Spec(Z) is finite and does not depend on the choice of a particular compactification.