Steinberg modules and Donkin pairs
Steinberg modules and Donkin pairs
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Steinberg 模块和 Donkin 对
DOI:
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发表时间:
1999
期刊:
影响因子:
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通讯作者:
W. Kallen
中科院分区:
文献类型:
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作者:
W. Kallen
First we prove that in characteristicp>0 a module with good filtration for a group of type E6 restricts to a module with good filtration for a group of type F4. Thus we confirm a conjecture of Brundan for one more case. Our method relies on the canonical Frobenius splittings of Mathieu. Next we settle the remaining cases, with a computer-aided variation on the old method of Donkin.