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arXiv 1209.5887math.RA
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关于Hom-李代数的泛中心扩张

On universal central extensions of Hom-Lie algebras

J. M. Casas, M. A. Insua, N. Pacheco

摘要:

本文发展了Hom-李代数的泛中心扩张理论。李代数的泛中心扩张的经典结果不能完全推广到Hom-李代数的情形,因为两个中心扩张的合成不是中心的。这一事实导致引入通用$α$ -中心扩展的概念。经典的关于完备Hom-李代数存在泛中心扩张的结果仍然成立,而关于泛中心扩张的中间项的中心扩张分裂的结果只对$α$ -中心扩张成立.给出泛($α$)-中心扩张的一个同调刻画.

英文摘要:

We develop a theory of universal central extensions of Hom-Lie algebras. Classical results of universal central extensions of Lie algebras cannot be completely extended to Hom-Lie algebras setting, because of the composition of two central extensions is not central. This fact leads to introduce the notion of universal $α$-central extension. Classical results as the existence of a universal central extension of a perfect Hom-Lie algebra remains true, but others as the central extensions of the middle term of a universal central extension is split only holds for $α$-central extensions. A homological characterization of universal ($α$)-central extensions is 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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