p‐parts of character degrees

p‐parts of character degrees
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DOI:
10.1112/jlms/jdv035
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发表时间:
2015-10
期刊:
Journal of the London Mathematical Society
影响因子:
--
通讯作者:
M. Lewis;G. Navarro;P. Tiep;H. Tong-Viet
M. Lewis;G. Navarro;P. Tiep;H. Tong-Viet
中科院分区:
其他
文献类型:
--
作者:
M. Lewis;G. Navarro;P. Tiep;H. Tong-Viet

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证明了:如果p是奇素数,G是一个有限群,且满足p2除以G的无不可约特征标的次数的条件,则|G:op(G)|p⩽p4,其中Op(G)是G的最大正规p-子群,如果P是G的Sylow p-子群,则P‘在G中次正规.我们的研究表明,如果pa是p除以G的不可约特征标次的最大幂,则|G:op(G)|p有界于Pf(A),其中f(A)是a中的函数,P(a+1)是G中的次正规函数。
We show that if p is an odd prime and G is a finite group satisfying the condition that p2 divides the degree of no irreducible character of G , then |G:Op(G)|p⩽p4, where Op(G) is the largest normal p ‐subgroup of G , and if P is a Sylow p ‐subgroup of G , then P'' is subnormal in G . Our investigations suggest that if pa is the largest power of p dividing the degrees of irreducible characters of G , then |G:Op(G)|p is bounded by pf(a), where f(a) is a function in a and P(a+1) is subnormal in G .