摘要
本文主要在扭类A与D之间找到了一种新的扭类A_1,并且证明了。A(?)A(?)D,及A(?)A^2,从而A~*=A~*=R~*。同时给出了A_1的一些性质及等价条件。
This paper mainly presents a new torsion classXl which is found between A and D. It is proved that A AlD and AlA2. Furthermore, Ae*= A* = R*. Meanwhile some characters and equivalent conditions of Al ate given.
出处
《南方冶金学院学报》
1991年第3期265-269,共5页
Journal of Southern Institute of Metallurgy
关键词
扭类
大素子群
极大
torsion class, large prime subgroup, maximal
