摘要
Let A and B belong to B(H) and B(H’) respectively, B(H, H’) denote the set of all linear bounded operators between the two separable Hilbert spaces H’ and H. The relation 'X→AX→XB' defines a bounded linear operator on B(H’, H), call- ed Rosenblum operator. A long-time-suspended basic problem about Rosenblum oper-
