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arXiv 1709.03023math.RA
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权系$(Θ_{n},sl_{n})$分次李代数

Lie algebras graded by the weight system $(Θ_{n},sl_{n})$

Alexander Baranov, Hogir M. Yaseen

摘要:

一个李代数$L$称为$(Θ_{n},sl_{n})$ -分次的,如果它包含一个与$sl_{n}$同构的单子代数$\mathfrak{g}$,使得$\mathfrak{g}$ -模$L$分解为伴随模、平凡模、自然模$V$、它的对称和外平方$S^{2}V$和$\wedge^{2}V$及其子模的拷贝。本文描述了$n\ge5$-分次李代数的乘法结构和坐标代数,对这些李代数进行了分类,并确定了它们的中心扩张。

英文摘要:

A Lie algebra $L$ is said to be $(Θ_{n},sl_{n})$-graded if it contains a simple subalgebra $\mathfrak{g}$ isomorphic to $sl_{n}$ such that the $\mathfrak{g}$-module $L$ decomposes into copies of the adjoint module, the trivial module, the natural module $V$, its symmetric and exterior squares $S^{2}V$ and $\wedge^{2}V$ and their duals. We describe the multiplicative structures and the coordinate algebras of $(Θ_{n},sl_{n})$-graded Lie algebras for $n\ge5$, classify these Lie algebras and determine their central extensions.

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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