Cohomology of Filippov algebras and an analogue of Whitehead's lemma

Cohomology of Filippov algebras and an analogue of Whitehead's lemma
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DOI:
10.1088/1742-6596/175/1/012001
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发表时间:
2009-05
期刊:
arXiv: Mathematical Physics
影响因子:
--
通讯作者:
J. A. Azcárraga;J. M. Izquierdo
J. A. Azcárraga;J. M. Izquierdo
中科院分区:
其他
文献类型:
--
作者:
J. A. Azcárraga;J. M. Izquierdo

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我们证明了半单李代数的两个上同调性质对Filippov(n-Lie)代数也成立,即半单n-Lie代数不允许非平凡的中心扩张和它们是刚性的,即不能在Gertenhaber意义下变形。这一结果类似于Filippov代数中的Whitehead引理。最后对n-Leibniz代数的情形作了一些评论。
We show that two cohomological properties of semisimple Lie algebras also hold for Filippov (n-Lie) algebras, namely, that semisimple n-Lie algebras do not admit non-trivial central extensions and that they are rigid i.e., cannot be deformed in Gerstenhaber sense. This result is the analogue of Whitehead's Lemma for Filippov algebras. A few comments about the n-Leibniz algebras case are made at the end.