回顾了域和唯一分解环的定义.应用分式化方法刻画了唯一分解环上对称矩阵模的保持伴随函数的线性变换的形式.对于近世代数的深入教学有一定的意义.
Recalled the definitions of the field and unique factorization domain. By the fractional method, characterized the linear preservers of the adjoint function on the symmetric matrix module. Has some meanings for the farther teaching of modem algebra.