自反DTS(υ,λ)的存在谱  

THE SPECTRUM OF SELF-CONVERSE DTS (υ,λ)

作　　者：田子红[1] 

机构地区：[1]河北师范学院数学系,石家庄050091

出　　处：《应用数学学报》1997年第4期531-534,共4页Acta Mathematicae Applicatae Sinica

摘　　要：一个Directed三元系DTS(υ,λ)=(X,B)是自反的,如果它与它的逆(X,B-1)同构,其中B-1=｛(z,y,x);(x,y,z)∈B｝.继[2]给出自反DTS(υ,1)的存在谱之后,本文将给出自反DTS(υ,λ)A directed triple system DTS (υ,λA)= (X, B) is called self-converse if it and its converse (X, B-1) are isomorphic, where B-1 = {(z, y, x); (x, y, z) ∈B}. We have obtained the spectrum of self-converse DTS (υ,1) in [2]. In this paper, the existence spectrum of self-converse DTS (υ,λ) is given, which is

关 键 词：可迁三元组 Directed三元系 区组设计 

分 类 号：O157.2[理学—数学]