%0 Journal Article
%T Approximation with Jacobi Weight for Bernstein Type Operators<br>Bernstein型算子加Jacobi权逼近
%A Ding Chunmei
%A <br>丁春梅
%J 系统科学与数学
%D 2006
%I 
%X For Bernstein type operators, we prove that the operators are unbounded in usual weighted norm. After introducing a new weighted norm, we study the properties of approximation with Jacobi weight and obtain the direct and inverse theorems of weighted approximation. From these theorems the equivalent theorem of characterization follows.
%K Bernstein type operators
%K Jacobi weight
%K direct theorem
%K inverse theorem<br>Bernstein型算子
%K Jacobi权
%K 逼近
%K 正定理
%K 逆定理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=37F46C35E03B4B86&jid=0CD45CC5E994895A7F41A783D4235EC2&aid=37FA59055479A6EB&yid=37904DC365DD7266&vid=96C778EE049EE47D&iid=CA4FD0336C81A37A&sid=160587E770D850AC&eid=2F40B79C38DBE07D&journal_id=1000-0577&journal_name=系统科学与数学&referenced_num=2&reference_num=9