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arXiv 1011.3142math.RT
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有限域和p-adic域上形式及形式对的典范矩阵

Canonical matrices of forms and pairs of forms over finite and p-adic fields

Vladimir V. Sergeichuk

摘要:

给出了特征不为2的有限域和p不为2的p进数域Q_p的有限扩张上的(a)双线性型和半双线性型,(b)对称或反对称型对,(c)埃尔米特型对的典范矩阵.这些典范矩阵是在特征不为2的域上的(a)-(c)的典范矩阵的特殊情况,其在[V. V. Sergeichuk,Math. USSR-Izv. 31(1988)481-501]直到在其有限扩张上的二次或厄米特形式的分类。

英文摘要:

Canonical matrices of (a) bilinear and sesquilinear forms, (b) pairs of forms, in which every form is symmetric or skew-symmetric, and (c) pairs of Hermitian forms are given over finite fields of characteristic not 2 and over finite extensions of the field Q_p of p-adic numbers with p not 2. These canonical matrices are special cases of the canonical matrices of (a)-(c) over a field of characteristic not 2 that were obtained in [V. V. Sergeichuk, Math. USSR-Izv. 31 (1988) 481-501] up to classification of quadratic or Hermitian forms over its finite extensions.

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