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arXiv 2202.13192math.NT
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特征为2的等变二次型

Equivariant quadratic forms in characteristic 2

Gabriele Nebe, Richard Parker

摘要:

设$G$是有限群,$K$是特征为$2$的有限域.用$t$表示交换子因子群$G/G'$的$2$秩,用$s$表示自对偶单$KG$模的个数。则等变二次型$\WQ (K,G)$的Witt群同构于秩为$s+t$的初等交换$2$ -群.

英文摘要:

Let $G$ be a finite group and $K$ a finite field of characteristic $2$. Denote by $t$ the $2$-rank of the commutator factor group $G/G'$ and by $s$ the number of self-dual simple $KG$-modules. Then the Witt group of equivariant quadratic forms $\WQ (K,G)$ is isomorphic to an elementary abelian $2$-group of rank $s+t$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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