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