K-Theory and analytic isomorphisms
K-Theory and analytic isomorphisms
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K 理论和解析同构
DOI:
10.1007/bf01390120
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发表时间:
1980
期刊:
影响因子:
--
通讯作者:
C. Weibel
中科院分区:
文献类型:
--
作者:
C. Weibel
Ifsis a central nonzerodivisor of a ringA, letBdenote thes-adic completion ofA. By a theorem of Karoubi, there is a long exact sequence relating theK-theory ofA, B, A[s−1], andB[s−1]. This sequence was first exploited by Vorst in his thesis. We give two applications of the Karoubi sequence: (1) an example of a 2-dimensional normal domain withNK0≠0, answering a question of Murthy, and (2) a complete computation ofK2of an (affine) seminormal curve over an algebraically closed field.