Reduction of tori split over tamely ramified extensions.

被引:0
|
作者
Buchheim, C
Frommer, H
机构
[1] Univ Cologne, Inst Informat, D-50969 Cologne, Germany
[2] Univ Munster, Fachbereich Math, D-48149 Munster, Germany
关键词
D O I
10.1016/j.crma.2003.12.003
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We study the connected component of the special fiber of the Neron model of a torus split over a tamely ramified extension. It turns out to be a product of Witt vectors of finite length, explicitly calculable. We are thus able to correct a result presented in Kunyavskii and Sansuc (C. R. Acad. Sci. Paris, Ser. 1324 (1997) 307-312). (C) 2003 Academie des sciences. Publie par Elsevier SAS. Tous droits reserves.
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页码:219 / 221
页数:3
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