摘要
设R是reduced环,记Un(R)为R上的n×n上三角矩阵环,则Un(R)的子环Wn是Armendariz环.
Let R be a reduced ring.Let Un(R) denote the ring of all n×n upper triangular matrixs with ertries in R,then the subring Wn of Un(R) is Armendariz ring.
出处
《西北师范大学学报(自然科学版)》
CAS
2003年第3期22-24,共3页
Journal of Northwest Normal University(Natural Science)