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谁负韶华

新虫 (小有名气)

[求助] 有限单群的一道题目

设G是非Abel有限单群,A=AutG.证明A的自同构都是内自同构,即AutA=IntA.

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hank612

至尊木虫 (著名写手)

这是个经典结果.
The automorphism of non-abelian finite  simple group is complete.

www.math.ucla.edu/~mms/simple.ps
We_must_know. We_will_know.
2楼2014-03-20 04:41:27
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谁负韶华

新虫 (小有名气)

引用回帖:
2楼: Originally posted by hank612 at 2014-03-20 04:41:27
这是个经典结果.
The automorphism of non-abelian finite  simple group is complete.

www.math.ucla.edu/~mms/simple.ps

页面不存在啊,亲

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3楼2014-03-20 11:46:01
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hank612

至尊木虫 (著名写手)

引用回帖:
3楼: Originally posted by 谁负韶华 at 2014-03-20 11:46:01
页面不存在啊,亲
...

不好意思,没有检查链接。

http://arxiv.org/pdf/1401.0177.pdf  文章中提到,
By Burnside criterion, if the group of all inner automorphisms Inn(G) of a centerless group G is a characteristic subgroup in Aut(G), then Aut(G) is complete (see [20, Theorem 13.5.8]).


[20] Robinson D. J. S., A course in the theory of groups, Second edition. Graduate
Texts in Mathematics, 80 (Springer-Verlag, New York, 1996).
你可以尝试直接证Burnside这个更基本的定理。
We_must_know. We_will_know.
4楼2014-03-20 13:28:49
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