Surprising properties of centralisers in classical Lie algebras
Surprising properties of centralisers in classical Lie algebras
复制标题
经典李代数中心化器的惊人性质
DOI:
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发表时间:
2008
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通讯作者:
O. Yakimova
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文献类型:
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作者:
O. Yakimova
Let $g$ be a classical Lie algebra, i.e., either $gl_n$, $sp_n$, or $so_n$ and let $ein g$ be a nilpotent element. We study various properties of centralisers $g_e$. The first four sections deal with rather elementary questions, like the centre of $g_e$, commuting varieties associated with $g_e$, or centralisers of commuting pairs. The second half of the paper addresses problems related to different Poisson structures on $g_e^*$ and symmetric invariants of $g_e$.