摘要
A presentation of hyperbolic unitary group is an important part in the unitary group. The group KG 2,n (R) plays an elementary role in presentation of unitary group. It is proved that KG 2,n(R)=1 for n≥2 over a ring R with division ring of quotients, using a new method, and a presentation of GE n(R) is given.
双曲酉群的表示是酉群的重要内容 .群KG2 ,n(R)在酉群的表示中扮演基本的角色 .这里使用新的方法证明了 ,对任何有商除环的环R ,n≥ 2时 ,有KG2 ,n(R) =1,并且给出了群GEn(R)的一个表示 .
