This article is a contribution to the study of the automorphism groups of 3-(v,k,3) designs.Let S =(P,B) be a non-trivia......

In this paper, in order to find a set of element orders of projective special liner group PSL(2,q) and num-bers of eleme......

本文验证了A5和PSL（2，7）是非阿贝尔单群中含对合数最少的两个群（前者含15个对合，后者含21个对合）。同时，对有限CIT－群G的可解性和有限不可......

仅用Sylow定理证明6072阶单群一定同构于PSL（2，23）．...