On the first Witt index of quadratic forms
成果类型：
Article
署名作者：
Karpenko, NA
署名单位：
Universite de Lille
刊物名称：
INVENTIONES MATHEMATICAE
ISSN/ISSBN：
0020-9910
DOI：
10.1007/s00222-003-0294-7
发表日期：
2003
页码：
455-462
关键词：
摘要：
We prove Hoffmann's conjecture determining the possible values of the first Witt index of anisotropic quadratic forms of any given dimension. The proof makes use of the Steenrod type operations on the modulo 2 Chow groups constructed by P. Brosnan.
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