主要研究了方次数是3的3群,证明了:如果方次数是3的3群G的幂零类是3,那么|G|≥37.进一步,设d(G)=3,则cl(G)=3当且仅当|G|=37.
In this paper ,we mainly study the 3‐group G with exp G=3 We show that if cl(G)=3 ,then|G|≥37 ,moreover ,let d(G)=3 ,then cl(G)=3 if and only if |G|=37 .