Witt kernels of bilinear forms for algebraic extensions in characteristic 2
Witt kernels of bilinear forms for algebraic extensions in characteristic 2
复制标题
特征 2 中代数扩张的双线性形式的 Witt 核
DOI:
10.1090/s0002-9939-05-08175-x
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发表时间:
2005
影响因子:
0.8
通讯作者:
D. Hoffmann
中科院分区:
文献类型:
--
作者:
D. Hoffmann
Let F be a field of characteristic 2 and let K/F be a purely inseparable extension of exponent 1. We determine the kernel W(K/F) of the natural restriction map W F → WK between the Witt rings of bilinear forms of F and K, respectively. This complements a result by Laghribi who computed the kernel for the Witt groups of quadratic forms for such an extension K/F. Based on this result, we will determine W(K/F) for a wide class of finite extensions which are not necessarily purely inseparable.