Flag-transitive 2-designs with the prime square replication number

被引:3
作者
Shen, Jiaxin [1 ]
Zhou, Shenglin [1 ]
机构
[1] South China Univ Technol, Sch Math, Guangzhou 510641, Peoples R China
基金
中国国家自然科学基金;
关键词
2-design; Primitivity; Flag-transitivity; Automorphism group;
D O I
10.1016/j.disc.2020.112225
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In this note, we show that if G is a flag-transitive automorphism group of a symmetric 2-design D with the prime square replication number, then G is point-primitive of affine or almost simple type. If D is a non-symmetric 2-design and G is a primitive group, then G is of affine, almost simple or product type with G <= HzS2 acting on P = Delta x Delta, where H is a primitive group on Delta. (c) 2020 Elsevier B.V. All rights reserved.
引用
收藏
页数:5
相关论文
共 14 条
[1]   Flag-transitive block designs with prime replication number and almost simple groups [J].
Alavi, Seyed Hassan ;
Bayat, Mohsen ;
Choulaki, Jalal ;
Daneshkhah, Ashraf .
DESIGNS CODES AND CRYPTOGRAPHY, 2020, 88 (05) :971-992
[2]   BLOCK-TRANSITIVE T-DESIGNS .1. POINT-IMPRIMITIVE DESIGNS [J].
CAMERON, PJ ;
PRAEGER, CE .
DISCRETE MATHEMATICS, 1993, 118 (1-3) :33-43
[3]  
Camina A. R., 1996, Electron. J. Combin., V3, pR3
[4]  
Davies H., 1987, Automorphisms of designs
[5]  
Dembowski P., 1968, Finite Geometries
[6]   Primitive rank 3 groups on symmetric designs [J].
Dempwolff, U .
DESIGNS CODES AND CRYPTOGRAPHY, 2001, 22 (02) :191-207
[7]  
Dixon J. D., 1996, PERMUTATION GROUPS
[8]   THE CLASSIFICATION OF 3/2-TRANSITIVE PERMUTATION GROUPS AND 1/2-TRANSITIVE LINEAR GROUPS [J].
Liebeck, Martin W. ;
Praeger, Cheryl E. ;
Saxl, Jan .
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 2019, 147 (12) :5023-5037
[9]  
LIEBECK MW, 1985, J LOND MATH SOC, V31, P250
[10]   ON THE ONAN-SCOTT THEOREM FOR FINITE PRIMITIVE PERMUTATION-GROUPS [J].
LIEBECK, MW ;
PRAEGER, CE ;
SAXL, J .
JOURNAL OF THE AUSTRALIAN MATHEMATICAL SOCIETY SERIES A-PURE MATHEMATICS AND STATISTICS, 1988, 44 :389-396