Anderson's inequality;
Fuglede-Putnam;
Hilbert space;
James orthogonality;
D O I:
10.1016/j.laa.2007.02.007
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
We investigate the converse of Anderson's theorem on the range-kernel orthogonality of a derivation. In particular, we show that a pair of bounded linear operators on a Hilbert space satisfies the Fuglede-Putnam theorem relative to the ideal of compact operators if and only if it satisfies Anderson's inequality relative to the same ideal. (c) 2007 Elsevier Inc. All rights reserved.