对两类几乎单群旗传递作用于斯坦诺5-设计上的情况进行了讨论,得到了:设D=(X,B,I)是非平凡的斯坦诺5-设计,D的自同构群G旗传递地作用在D上。若G是几乎单群,则Soc(G)不同构于单群HS(这里v=176)和CO3(这里v=276)。
The case of two types of almost simple groups acting flag - transitivly on the Steiner 5 - designs is discussed , the results are as follows : let D = (X, B, I) be a non - trivial Steiner 5 - design, and G be a flag - transitive Automorphism group of D , if G is almost simple type , then Soc(G) is not isomorphic to HS group and CO3 group.