摘要
设U为具有单位元I的Banach代数,P,Q为其上的幂等元.给出P-Q,PQ,PQ-QP为群逆的等价刻画.
Let P and Q be idempotents on the Banach algebra U with unit I.In this paper,the group invertibility of P-Q,PQ,PQ-QP was studied.
出处
《宁德师范学院学报(自然科学版)》
2012年第2期126-128,134,共4页
Journal of Ningde Normal University(Natural Science)
关键词
幂等元
群逆
积与差
idempotents
group inverse
product and difference