On Best Approximations from RS-sets in Complex Banach Spaces  

作　　者：ChongLI 

机构地区：[1]DepartmentofMathematics,ZhejiangUniversity,Hangzhou310027,P.R.China

出　　处：《Acta Mathematica Sinica,English Series》2005年第1期31-38,共8页数学学报（英文版）

基　　金：Supported in part by the National Natural Science Foundation of China(Grant No.10271025) 41A29,41A50

摘　　要：The concept of an RS–set in a complex Banach space is introduced and theproblem of best approximation from an RS–set in a complex space is investigated. Results consistingof characterizations, uniqueness and strong uniqueness are established.The concept of an RS–set in a complex Banach space is introduced and theproblem of best approximation from an RS–set in a complex space is investigated. Results consistingof characterizations, uniqueness and strong uniqueness are established.

关 键 词：Complex RS–set Best approximation UNIQUENESS Strong uniqueness 

分 类 号：O177.2[理学—数学]