Graphs of nonsolvable groups with four degree-vertices

被引:3
作者
He LiGuo [1 ]
Qian GuoHua [2 ]
机构
[1] Shenyang Univ Technol, Dept Math, Shenyang 100870, Peoples R China
[2] Changshu Inst Technol, Dept Math, Changshu 215500, Peoples R China
基金
中国国家自然科学基金;
关键词
nonsolvable group; character degree; character degree graph;
D O I
10.1007/s11425-014-4875-2
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Let G be a finite group. The degree (vertex) graph I"(G) attached to G is a character degree graph. Its vertices are the degrees of the nonlinear irreducible complex characters of G, and different vertices m, n are adjacent if the greatest common divisor (m, n) > 1. In this paper, we classify all graphs with four vertices that occur as I"(G) for nonsolvable groups G.
引用
收藏
页码:1305 / 1310
页数:6
相关论文
共 15 条
[1]  
[Anonymous], 1967, Endliche Gruppen I, Die Grundlehren der Mathematischen Wissenschaften
[2]   Character degree graphs that are complete graphs [J].
Bianchi, Mariagrazia ;
Chillag, David ;
Lewis, Mark L. ;
Pacifici, Emanuele .
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 2007, 135 (03) :671-676
[3]   Nonsolvable normal subgroups and irreducible character degrees [J].
He, Liguo ;
Zhu, Gang .
JOURNAL OF ALGEBRA, 2012, 372 :68-84
[4]   Character degree graphs and normal subgroups [J].
Isaacs, IM .
TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY, 2004, 356 (03) :1155-1183
[5]  
Isaacs IM., 1976, CHARACTER THEORY FIN, V69
[6]   An overview of graphs associated with character degrees and conjugacy class sizes in finite groups [J].
Lewis, Mark L. .
ROCKY MOUNTAIN JOURNAL OF MATHEMATICS, 2008, 38 (01) :175-211
[7]   Four-vertex degree graphs of nonsolvable groups [J].
Lewis, Mark L. ;
White, Donald L. .
JOURNAL OF ALGEBRA, 2013, 378 :1-11
[8]   Nonsolvable groups with no prime dividing three character degrees [J].
Lewis, Mark L. ;
White, Donald L. .
JOURNAL OF ALGEBRA, 2011, 336 (01) :158-183
[9]   Connectedness of degree graphs of nonsolvable groups [J].
Lewis, ML ;
White, DL .
JOURNAL OF ALGEBRA, 2003, 266 (01) :51-76
[10]   Nonsolvable groups with few character degrees [J].
Malle, G ;
Moretó, A .
JOURNAL OF ALGEBRA, 2005, 294 (01) :117-126