摘要
R是实数域,S_n(R)表示R上n×n对称矩阵空间,本文刻画了S_n(R)到自身满足f(A)f(B)=f(B)f(A)当且仅当AB=BA的加法满射f的形式,并且本文又刻画了S_n(R)到自身满足g(A_1)g(A_2)…g(A_k)=g(A_k)g(A_(k-1))…g(A_1)当且仅当A_1A_2…A_k=A_kA_(k-1)…A_1的加法满射g的形式,其中k≥3。
Let R is a real number field, Sn(R) be the set of all n×n symmetric matrices over R . We characterize the additive subjective map on Sn(R) and f (A) f (B)=f (B) f (A) if and only if AB=BA .
出处
《科技通报》
北大核心
2016年第6期21-23,共3页
Bulletin of Science and Technology
关键词
实数域
n×n对称矩阵空间
加法满射
保交换
real number field
n×n symmetric matrix spaces
additive subjective map
commutation preserver