Proceedings of the American Mathematical Society

Author(s): Salah Mecheri
Journal: Proc. Amer. Math. Soc. 133 (2005), 759-762.
MSC (2000): Primary 47B47, 47A30, 47B20; Secondary 47B10
Posted: October 7, 2004
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Abstract: The main purpose of this note is to characterize the operators $T\in B(H)$ which are orthogonal (in the sense of James) to the range of a generalized derivation for non-normal operators $A,B\in B(H).$

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