【题名】:ε-isometric Approximation Problem东北数学:英文版论文(ε-isometric Approximation ProblemDongBeiShuXue:YingWenBanLunWen) 【关键词】:ε-等距逼近 拉登测度 半连续 拓扑线性空间 【keywords】:ε-DengJuBiJin LaDengCeDu BanLianXu TuoPuXianXingKongJian 【作者】:马玉梅,王见勇, 【来源】: 知识词典 【期刊名称】:东北数学:英文版(DongBeiShuXue:YingWenBan) 【国际标准刊号】:1000-1778 【国内统一刊号】:22-1120 【作者单位】:[1]DepartmentofMathematics,DalianNationalitiesUniversity,Dalian,Liaoning,116600 [2]DepartmentofMathematics,ChangshuInstituteofTechnology,Changshu,Jiangsu,215500([1]DepartmentofMathematics,DalianNationalitiesUniversity,Dalian,Liaoning,116600 [2]DepartmentofMathematics,ChangshuInstituteofTechnology,Changshu,Jiangsu,215500) 【分类号】:O177.31 【页码】:-135-145 【出版年】:2005.2 【下载地址】:下载pdf全文 In this paper, some problems for isometric approximation are discussed. It is shown that an almost isometry from the unit ball of C(X) into the unit ball of C(Y) is near to an isometry. We also give a counterexample to this problem on the unit ball of l1.
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