设R是一个至少含有3个单位的交换整环,Tn(R)是R上的上三角矩阵空间,刻画了Tn(R)上的保逆线性满射的全体.
Suppose R is a commutative integral domain with three units at least, Tn (R) stands for the space of n x n upper triangular matrices over R, the authors characterize inverse- preserving linear surjections Tn (R).