On the derived algebra of a centraliser
On the derived algebra of a centraliser
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关于中心化器的派生代数
DOI:
10.1016/j.bulsci.2010.03.005
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发表时间:
2010
影响因子:
1.3
通讯作者:
O. Yakimova
中科院分区:
文献类型:
--
作者:
O. Yakimova
Let g be a classical Lie algebra, e∈g a nilpotent element and ge⊂g the centraliser of e. We prove that ge=[ge,ge] if and only if e is rigid. It is also shown that if e∈[ge,ge], then the nilpotent radical of gecoincides with [g(1)e,ge], where g(1)e⊂geis an eigenspace of a characteristic of e corresponding to the eigenvalue 1.