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arXiv math/0011225math.RA
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由权图判定2步可解李代数

On the determination of 2-step solvable Lie algebra from its weight graph

Jose Maria Ancochea, Otto Rutwig Campoamor

摘要:

利用与幂零李代数$\frak{g}$相联系的权图的概念,我们得到了半直积$\frak{g}\oplus T_{i}$是2步可解的充要条件,其中$T_{i}<T$是$\frak{g}$的导子$T$的极大环面的子代数,它将$\frak{g}$分解为一维权空间.特别地,我们证明了这样一个李代数的半直积及其导子环面本身不可能是2-步可解的。

英文摘要:

By using the concept of weight graph associated to certain nilpotent Lie algebras $\frak{g}$, we find necessary and sufficient conditions for a semidirect product $\frak{g}\oplus T_{i}$, where $T_{i}<T$ is a subalgebra of a maximal torus of derivations $T$ of $\frak{g}$ which induces a decomposition of $\frak{g}$ into one dimensional weight spaces, to be 2-step solvable. In particular we show that the semidirect product of such a Lie algebra with its torus of derivations cannot be itself 2-step solvable.

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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