Complete reducibility and conjugacy classes of tuples in algebraic groups and Lie algebras
Complete reducibility and conjugacy classes of tuples in algebraic groups and Lie algebras
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代数群和李代数中元组的完全可约性和共轭类
DOI:
10.1007/s00209-010-0763-9
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发表时间:
2010
影响因子:
0.8
通讯作者:
Bate M
中科院分区:
文献类型:
--
作者:
Bate M
LetHbe a reductive subgroup of a reductive groupGover an algebraically closed fieldk. We consider the action ofHonGn, then-fold Cartesian product ofGwith itself, by simultaneous conjugation. We give a purely algebraic characterization of the closedH-orbits inGn, generalizing work of Richardson which treats the caseH=G. This characterization turns out to be a natural generalization of Serre’s notion ofG-complete reducibility. This concept appears to be new, even in characteristic zero. We discuss how to extend some key results onG-complete reducibility in this framework. We also consider some rationality questions.
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DOI:
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发表时间:
1988
期刊:
影响因子:
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作者:
R. Richardson
通讯作者:
R. Richardson
DOI:
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发表时间:
2004
期刊:
影响因子:
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作者:
M. Bate;B. Martin;G. Röhrle
通讯作者:
G. Röhrle
DOI:
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发表时间:
1970
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影响因子:
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作者:
M. Demazure
通讯作者:
M. Demazure
DOI:
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发表时间:
1978
期刊:
影响因子:
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作者:
W. Hesselink
通讯作者:
W. Hesselink
影响因子:
0.9
作者:
B. Martin
通讯作者:
B. Martin