%0 Journal Article
%T ON THE APPROXIMATE POLAR FACTORS<br>关于近似极因子
%A 孙继广
%J 计算数学
%D 1991
%I 
%X To compute the polar decomposition A=QH, usually an approximate unitaryfactor X of A is first computed, and then the matrix K-1/2(X~HA+A~HX) is takenas an approximate Hermitian factor of A. This paper introduces the residual R=A-XK, and gives an approximate analysis of the approximate polar factors K andX.
%K 矩阵
%K 近似极因子
%K 极分解
%K 近似分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=37F46C35E03B4B86&jid=CC77F3CEF526D9CF0B3021650FB4E57E&aid=91D6581AD25D22CDF6D6C2CAFDD3F9E3&yid=116CB34717B0B183&vid=FC0714F8D2EB605D&iid=CA4FD0336C81A37A&sid=94E7F66E6C42FA23&eid=771152D1ADC1C0EB&journal_id=0254-7791&journal_name=计算数学&referenced_num=0&reference_num=2