数学物理学报(英文版) ›› 1994, Vol. 14 ›› Issue (S1): 46-52.

• 论文 • 上一篇    下一篇

ISOMETRIC APPROXIMATION FROM 2-DIM BANACH SPACE INTO L1[0,1]

张庆洪   

  1. Dept. of math., Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • 收稿日期:1992-06-05 出版日期:1994-12-31 发布日期:1994-12-31

ISOMETRIC APPROXIMATION FROM 2-DIM BANACH SPACE INTO L1[0,1]

Zhang Qinghong   

  1. Dept. of math., Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:1992-06-05 Online:1994-12-31 Published:1994-12-31

摘要: In this paper, some characterizations of isometric operators and ε-isometric opertors from 2-dim Banach Space E2 into L1[0, 1] are given, where E2 denotes a Banach Space whose unit ball is the union of a polygon C and the region enclosd by C in the plane. Also,the answer for IAP(Isometric Approximation Problem) on B(E2,L1[0, 1]) is obtained.

关键词: Isometric operators, Isometric approxiamation, Almost isometry

Abstract: In this paper, some characterizations of isometric operators and ε-isometric opertors from 2-dim Banach Space E2 into L1[0, 1] are given, where E2 denotes a Banach Space whose unit ball is the union of a polygon C and the region enclosd by C in the plane. Also,the answer for IAP(Isometric Approximation Problem) on B(E2,L1[0, 1]) is obtained.

Key words: Isometric operators, Isometric approxiamation, Almost isometry