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arXiv 1608.01490math.RA
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关于由局部幂零导子构成的李代数

On Lie algebras consisting of locally nilpotent derivations

A. P. Petravchuk, K. Ya. Sysak

摘要:

设$K$是特征为零的代数闭域,$A$是整域$K$. $A$的所有$K$ -导子的李代数$Der_{K}(A)$包含所有局部幂零导子的集合$LND(A)$。$LND(A)$的结构是人们非常感兴趣的,而关于包含在$LND(A)$中的李代数的性质的问题仍然是一个悬而未决的问题。在有限维情况下给出了一个答案。证明了$Der_{K}(A)$的任何由局部幂零导子构成的有限维($K$上)子代数都是幂零的.在$A=K[x, y],$情形下,还证明了$Der_{K}(A)$的任何由局部幂零导子构成的子代数都由$K[x, y]$与三角李代数的子代数的自同构共轭.

英文摘要:

Let $K$ be an algebraically closed field of characteristic zero and $A$ an integral $K$-domain. The Lie algebra $Der_{K}(A)$ of all $K$-derivations of $A$ contains the set $LND(A)$ of all locally nilpotent derivations. The structure of $LND(A)$ is of great interest, and the question about properties of Lie algebras contained in $LND(A)$ is still open. An answer to it in the finite dimensional case is given. It is proved that any finite dimensional (over $K$) subalgebra of $Der_{K}(A)$ consisting of locally nilpotent derivations is nilpotent. In the case $A=K[x, y],$ it is also proved that any subalgebra of $Der_{K}(A)$ consisting of locally nilpotent derivations is conjugated by an automorphism of $K[x, y]$ with a subalgebra of the triangular Lie algebra.

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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