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arXiv 2103.11977math.RA
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三角形矩阵代数作为李代数的分次:再论

Gradings on the algebra of triangular matrices as a Lie algebra: revisited

Plamen Koshlukov, Felipe Yukihide Yasumura

摘要:

研究了域上的上三角形矩阵代数作为一个李代数的群分次。这些结果是由同一作者在几年前获得的。我们提供了简化的证明,并提出了一个完整的分类的同构类的分级。我们还提供了一个分类的实际同构类的分级,这是一个更好的替代方法来考虑这些分级基本上是相同的对象。最后,我们详细调查的情况下,基本字段的特征是$2$,一个话题,在以前的作品中被忽视。

英文摘要:

We investigate the group gradings on the algebra of upper triangular matrices over an arbitrary field, viewed as a Lie algebra. These results were obtained a few years early by the same authors. We provide streamlined proofs, and present a complete classification of isomorphism classes of the gradings. We also provide a classification of the practical isomorphism classes of the gradings, which is a better alternative way to consider these gradings up to being essentially the same object. Finally, we investigate in details the case where the characteristic of the base field is $2$, a topic that was neglected in previous works.

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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