%0 Journal Article
%T QUASI-SIMILARITY OF WEIGHTED SHIFTSOPERATORS AND SPECTRUM<br>加权移位算子的拟相似与谱
%A XU FENG
%A <br>许凤
%J 系统科学与数学
%D 1994
%I 
%X In this paper we point out that quasisirnilar operators need not to preserve theWeyl spectrum and we show that quasisimilar injective bilateral weighted shifts ofmultiplicity M and degree K have equal approximate point spect rum
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=37F46C35E03B4B86&jid=0CD45CC5E994895A7F41A783D4235EC2&aid=54727D3036EEA3BDA61A81FF266C25F5&yid=3EBE383EEA0A6494&vid=F3583C8E78166B9E&iid=E158A972A605785F&sid=CF6CB42CFF3D4C4E&eid=50EA2A80A7D254EF&journal_id=1000-0577&journal_name=系统科学与数学&referenced_num=0&reference_num=0