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arXiv 1801.01271math.RA
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关于除环中几乎次正规子群正规化的除子环

On division subrings normalized by almost subnormal subgroups in division rings

Trinh Thanh Deo, Mai Hoang Bien, Bui Xuan Hai

摘要:

设$D$是一个具有无穷中心的除环,$K$是$D$的真除子环,$N$是$D$的乘法群$D^*$的几乎次正规子群.本文的目的是证明如果$K$是$N$不变的,并且$N$是非中心的,那么$K$是中心的.还给出了除环中几乎次正规子群不是次正规的例子。

英文摘要:

Let $D$ be a division ring with infinite center, $K$ a proper division subring of $D$ and $N$ an almost subnormal subgroup of the multiplicative group $D^*$ of $D$. The aim of this paper is to show that if $K$ is $N$-invariant and $N$ is non-central, then $K$ is central. Some examples of almost subnormal subgroups in division rings that are not subnormal are also given.

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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