Witt kernels and Brauer kernels for quartic extensions in characteristic two
Witt kernels and Brauer kernels for quartic extensions in characteristic two
复制标题
用于特征二的四次扩展的 Witt 核和 Brauer 核
DOI:
10.1016/j.jpaa.2015.02.034
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发表时间:
2015
影响因子:
0.8
通讯作者:
M. Sobiech
中科院分区:
文献类型:
--
作者:
D.W. Hoffmann;M. Sobiech
Let F be a field of characteristic 2 and let E/F be a field extension of degree 4. We determine the kernel W q (E/F) of the restriction map W q F→ W q E between the Witt groups of nondegenerate quadratic forms over F and over E, completing earlier partial results by Ahmad, Baeza, Mammone and Moresi. We also deduce the corresponding result for the Witt kernel W (E/F) of the restriction map W F→ W E between the Witt rings of nondegenerate symmetric bilinear forms over F and over E from earlier results by the first author. As an application, we describe the 2-torsion part of the Brauer kernel for such extensions.
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影响因子:
0.8
作者:
A. S. Sivatski
通讯作者:
A. S. Sivatski
影响因子:
0.9
作者:
D. Hoffmann;Ahmed Laghribi
通讯作者:
Ahmed Laghribi
影响因子:
1.3
作者:
D. Hoffmann;Ahmed Laghribi
通讯作者:
Ahmed Laghribi
DOI:
10.1007/bf02699188
发表时间:
1993
期刊:
Publications Mathématiques de l'Institut des Hautes Études Scientifiques
影响因子:
--
作者:
T. Lam;D. Leep;J. Tignol
通讯作者:
J. Tignol
DOI:
10.1090/proc/12651
发表时间:
2015
期刊:
影响因子:
--
作者:
D.W. Hoffmann
通讯作者:
D.W. Hoffmann