群3D4(q)与旗传递4平面设计
2022-01-20曾玲玲龚罗中
曾玲玲 龚罗中
群3D4()与旗传递4平面设计
曾玲玲a龚罗中b
(长沙师范学院a.图书馆;b.数学科学学院,湖南 长沙 410100)
旗传递设计;3D4(q)群;自同构群
⑴中每个元素恰好与中个元素关联;
⑵中任意两元素,恰好包含在的4个元素中;
⑶中的元素数等于中的元素数。
1 基本结论
本节,我们先给出一些在本文中将要用到的基本结论。
2 主要定理的证明
[1]F.Buekenhout,A.Delandtsheer,J.Doyen,P.B. Kleidman, M.Liebeck, J. Saxl, Linear spaces with flflag-transitive automorphism groups[J].Geom. Dedic,1990,36:89–94.
[2]E.O’Reilly Regueiro,On primitivity and reduction for flag-transitive symmetric designs[J].J.Comb.Theory,Ser.A,2005,109:135–148.
[3]E.O’Reilly Regueiro,Biplanes with flag-transitive automo-rphism groups of almost simple type,with alternating or sporadic socle[J].Eur.J.Comb,2005,26:577–584.
[4]E.O’Reilly Regueiro.Biplanes with flag-transitive automo-rphism groups of almost simple type,with classical soc-le[J].J.Algebraic Comb,2007, 26:529–552.
[5]E.O’Reilly,Regueiro.Biplanes with flag-transitive automor-phism groups of almost simple type,with exceptional so-cle[J].J.Algebraic Comb,2008,27479–491.
[6]Shenglin Zhou, Huili Dong, Weidong Fang. Finite classi-cal groups and flag-transitive triplanes,[J].Discrete Math-ematics.2009,309:5183–5195.
[7]ShengLin Zhou,GHuiLi Dong.Exceptional groups of Lie type and flag-transitive triplanes[J].Sci China Math.2010,53(2):394-400.
[8]ShenglinZhou·HuiliDong. Alternatinggroupsandflag-transiti-vetriplanes[J].Des.Codes Cryptogr.2010,57:117–126.
[9]P B Kleidman.The maximal subgroups of the Steinberg triality groups3D4(q) and of their automorphism grou-ps[J].JAlgebra,1988,115:182–199.
O152.1;O157.2
A
1673-2219(2021)05-0001-02
2021-08-02
曾玲玲(1973-),女,湖南沅江人,助理馆员,研究方向为应用数学。
龚罗中(1973-),男,湖南沅江人,博士,教授,研究方向为代数组合。
(责任编校:文春生)