On a question of Külshammer for representations of finite groups in reductive groups
On a question of Külshammer for representations of finite groups in reductive groups
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关于还原群中有限群表示的 Külshammer 问题
DOI:
10.1007/s11856-016-1337-2
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发表时间:
2016
影响因子:
1
通讯作者:
Bate M
中科院分区:
文献类型:
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作者:
Bate M
LetGbe a simple algebraic group of typeG2over an algebraically closed field of characteristic 2. We give an example of a finite group Γ with Sylow 2-subgroup Γ2and an infinite family of pairwise non-conjugate homomorphisms ρ: Γ →Gwhose restrictions to Γ2are all conjugate. This answers a question of Burkhard Külshammer from 1995. We also give an action of Γ on a connected unipotent groupVsuch that the map of 1-cohomologiesH1(Γ,V) →H1(Γp,V) induced by restriction of 1-cocycles has an infinite fibre.
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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
影响因子:
1
作者:
B. Külshammer
通讯作者:
B. Külshammer
DOI:
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发表时间:
2013
期刊:
影响因子:
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作者:
D. Lond
通讯作者:
D. Lond
DOI:
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发表时间:
2012
期刊:
影响因子:
--
作者:
David I. Stewart
通讯作者:
David I. Stewart
影响因子:
0.9
作者:
T. Uchiyama
通讯作者:
T. Uchiyama