On the converse to a theorem of R. Brauer

On the converse to a theorem of R. Brauer
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与 R. Brauer 定理相反

DOI:
10.1017/s0305004100030103
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发表时间:
1955
影响因子:
0.8
通讯作者:
J. Green
J. Green
中科院分区:
数学2区
文献类型:
--
作者:
J. Green

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其中at是有理数整数。这样的函数当然是0上的类函数;即,对于任何a,x ∈ G,&lt;fi(a)=<j>(x~ax)。我们将说G的子群集合§具有性质(A),如果下列陈述为真:(A)G上的类函数0是G的广义特征标,如果(j)对子群H的限制是H的广义特征标,对每个H e!Q. R. Brauer(1)证明了以下基本定理:
where the at are rational integers. Such a function is of course a class-function on 0; tha t is, <fi(a) = <j>(x~ax) for any a,x eG. We shall say that a set § of subgroups of G has the property (A) if the following statement is true: (A) A class function 0 on G is a generalized character of G if the restriction of (j) to the subgroup H is a generalized character of H, for every H e !Q. R. Brauer (l) has proved the following fundamental theorem: