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arXiv math/0509590math.RTmath.GR
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完全可约李子代数

Completely reducible Lie subalgebras

George J. McNinch

摘要:

设G是代数闭域K上的连通约化群. J-P. Serre引入了G的G-完全可约子群H的概念。本文给出了Lie(G)的李子代数的G-完全约化-- G-cr的概念,并证明了如果闭子群H < G是G-cr,则Lie(H)也是G-cr.

英文摘要:

Let G be a connected and reductive group over the algebraically closed field K. J-P. Serre has introduced the notion of a G-completely reducible subgroup H of G. In this note, we give a notion of G-complete reducibility -- G-cr for short -- for Lie subalgebras of Lie(G), and we show that if the closed subgroup H < G is G-cr, then Lie(H) is G-cr as well.

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