Coprime invariable generation and minimal-exponent groups
Coprime invariable generation and minimal-exponent groups
复制标题
互质不变生成和最小指数群
DOI:
10.1016/j.jpaa.2014.12.005
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发表时间:
2015
影响因子:
0.8
通讯作者:
Detomi E
中科院分区:
文献类型:
--
作者:
Detomi E
A finite group G is coprimely invariably generated if there exists a set of generators {g 1,…, g u} of G with the property that the orders| g 1|,…,| g u| are pairwise coprime and that for all x 1,…, x u∈ G the set {g 1 x 1,…, g u x u} generates G. We show that if G is coprimely invariably generated, then G can be generated with three elements, or two if G is soluble, and that G has zero presentation rank. As a corollary, we show that if G is any finite group such that no proper subgroup has the same exponent as G, then G has zero presentation rank. Furthermore, we show that every finite simple group is coprimely invariably generated by two elements, except for O 8+(2) which requires three elements. Along the way, we show that for each finite simple group S, and for each partition π 1,…, π u of the primes dividing| S|, the product of the number k π i (S) of conjugacy classes of π i-elements satisfies∏ i= 1 u k π i (S)≤| S| 2| Out S|.
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影响因子:
0.8
作者:
J. Dixon
通讯作者:
J. Dixon
DOI:
--
发表时间:
1979
期刊:
影响因子:
--
作者:
K. Roggenkamp
通讯作者:
K. Roggenkamp
DOI:
--
发表时间:
1974
期刊:
影响因子:
--
作者:
J. Cossey;K. Gruenberg;L. Kovács
通讯作者:
L. Kovács
DOI:
10.1016/b978-0-12-633650-4.50022-9
发表时间:
1976
影响因子:
1.3
作者:
W. Jones;B. Parshall
通讯作者:
B. Parshall
影响因子:
0.7
作者:
F. Volta;A. Lucchini;F. Morini
通讯作者:
F. Morini