1·The ellipse rotating symmetric group is proposed, which is an Abelian group.
提出椭圆旋转对称群，它是一个单参数阿贝尔群。
2·In this paper, the finite non-nilpotent group with every non-abelian subgroup being subnormal is investigated.
研究了每一非交换子群皆为次正规的有限非幂零群的结构。